Evaluation Board for the AD5222 Digital Potentiometer · EVAL-AD5222SDZ User Guide UG-349 OneTechnologyWay•P.O.Box9106•Norwood,MA 02062-9106,U.S.A.•Tel:781.329.4700•Fax:781.461.3113•

EVAL-AD5222SDZ User Guide UG-349

One Technology Way • P.O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Tel: 781.329.4700 • Fax: 781.461.3113 • www.analog.com

Evaluation Board for the AD5222 Digital Potentiometer

PLEASE SEE THE LAST PAGE FOR AN IMPORTANT WARNING AND LEGAL TERMS AND CONDITIONS. Rev. 0 | Page 1 of 16

FEATURES Full featured evaluation board for the AD5222 Various test circuits Various ac and dc input signals PC control via a separately purchased system demonstration

platform (SDP-B) PC software for control

PACKAGE CONTENTS EVAL-AD5222SDZ board CD that includes

Self-installing software that allows users to control the board and exercise all functions of the device

Electronic version of the AD5222 data sheet Electronic version of the UG-349 user guide

GENERAL DESCRIPTION This user guide describes the evaluation board for evaluating the AD5222—a dual-channel, 128-position, digital potentiometer

The AD5222 supports single-supply 2.7 V to 5.5 V operation, making the device suited for battery-powered applications and many other applications while offering a 0.2% channel-to-channel matching tolerance.

In addition, the AD5222 uses a high speed up/down interface, allowing speeds of up to 15 MHz.

The EVAL-AD5222SDZ can operate in single-supply mode and incorporates an internal power supply from the USB.

Complete specifications for the AD5222 part can be found in the AD5222 data sheet, which is available from Analog Devices, Inc., and should be consulted in conjunction with this user guide when using the evaluation board.

DIGITAL PICTURE OF EVALUATION BOARD WITH SYSTEM DEMONSTRATION PLATFORM

EVAL-AD5222SDZ

SYSTEM DEMONSTRATIONPLATFORM

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Figure 1.

http://www.analog.com/ad5222


http://www.analog.com/AD5222

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UG-349 EVAL-AD5222SDZ User Guide

Rev. 0 | Page 2 of 16

TABLE OF CONTENTS Features .............................................................................................. 1 Package Contents .............................................................................. 1 General Description ......................................................................... 1 Digital Picture of Evaluation Board with System Demonstration Platform.................................................................. 1 Revision History ............................................................................... 2 Evaluation Board Hardware ............................................................ 3

Power Supplies .............................................................................. 3 Link Options ................................................................................. 3

Test Circuits ...................................................................................4 Evaluation Board Software ...............................................................6

Installing the Software ..................................................................6 Running the Software ...................................................................6 Software Operation .......................................................................6

Evaluation Board Schematics and Artwork ...................................7 Ordering Information .................................................................... 13

Bill of Materials ........................................................................... 13 Related Links ................................................................................... 14

REVISION HISTORY 12/11—Revision 0: Initial Version



EVALUATION BOARD HARDWARE POWER SUPPLIES The EVAL-AD5222SDZ supports using single power supplies.

The evaluation board can be powered either from the SDP port or externally by the J1-1 and J1-2 connectors, as described in Table 1.

All supplies are decoupled to ground using 10 µF tantalum and 0.1 µF ceramic capacitors.

Table 1. Maximum and Minimum Voltages of the Connectors Connector No. Label Voltage J1-1 EXT Analog positive power supply, VDD. VDD For single-supply operation, it is 2.7 V

to 5 V. J1-2 GND Analog ground.

LINK OPTIONS Several link and switch options are incorporated in the evaluation board and should be set up before using the board. Table 2 describes the positions of the links to control the evaluation board by a PC, via the SDP-B board, using the EVAL-AD5222SDZ in single-supply mode. The functions of these link options are described in detail in Table 3 through Table 6.

Table 2. Link Options Setup for SDP-B Control (Default) Link No. Option A25 3.3 V A24 GND

Table 3. Link Functions Link No. Power Supply Options A25 VDD This link selects one of the following as the positive power supply: 5 V (from SDP-B). 3.3 V (from SDP-B). EXT (external supply from the J1-1 connector). A24 VSS This link should be connected to GND (analog ground).





TEST CIRCUITS The EVAL-AD5222SDZ incorporates several test circuits to evaluate the AD5222 performance.

DAC

RDAC1 can be operated as a digital-to-analog converter (DAC), as shown in Figure 2.

W1_BUF

A1

RDAC1

AC + DC

VDD

A1

B1

BUF_W1

GND

DC

2

VDD – VSS

VDD

2

VDD – VSS

R34

R35

W1

W1

B110

367-

002

Figure 2. DAC

Table 4 shows the options available for the voltage references.

Table 4. DAC Voltage References Terminal Link Options Description A1 A20 AC + DC Connects Terminal A1 to

(VDD − VSS)/2 VDD Connects Terminal A1 to VDD W1 BUF_W1 Connects Terminal W1 to an

output buffer B1 A21 DC Connects Terminal B1 to

(VDD − VSS)/2 GND Connects Terminal B1 to

analog ground

The output voltage is defined in Equation 1.

128)( WB1

B1A1OUTR

VVV (1)

where: RWB1 is the resistor between the W1 and B1 terminals. VA1 is the voltage applied to the A1 terminal (A20 link). VB1 is the voltage applied to the B1 terminal (A21 link).

However, by using the R34 and R35 external resistors, the user can reduce the voltage of the voltage references. In this case, use the A1 and B1 test points to measure the voltage applied to the A1 and B1 terminals and recalculate VA1 and VB1 in Equation 1.

AC Signal Attenuation

RDAC1 can be used to attenuate an ac signal, which must be provided externally using the AC_INPUT connector, as shown in Figure 3.

W1_BUF

A1

RDAC1

AC + DC

AC_INPUT

AC

A1

B1

BUF_W1

GND

2

VDD – VSS

R34

R35

W1

W1

B1

1µF

R36

DC

2

VDD – VSS

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Figure 3. AC Signal Attenuator

Depending on the voltage supply rails and the dc offset voltage of the ac signal, various configurations can be used as described in Table 5.

Table 5. AC Signal Attenuation Link Options Link Options Conditions A20 AC + DC No dc offset voltage. AC signal is outside the voltage supply rails

due to the dc offset voltage. DC offset voltage ≠ VDD/2.1 AC All other conditions. A21 DC Use in conjunction with ac + dc link. GND All other conditions. 1 Recommended to ensure optimal total harmonic distortion (THD) performance.

The signal attenuation is defined in Equation 2.

ENDTOEND

WWB1

RRR

nAttenuatio log20)dB( (2)

where: RWB1 is the resistor between the W1 and B1 terminals. RW is the wiper resistance. REND-TO-END is the end-to-end resistance value.

In addition, R36 can be used to achieve a pseudologarithmic attenuation. To do so, adjust the R36 resistor until a desirable transfer function is found.





Signal Amplifier

RDAC2 can be operated as an inverting or noninverting signal amplifier supporting linear or pseudologarithmic gains. Table 6 shows the available configurations.

The noninverting amplifier with linear gain is shown in Figure 4, and the gain is defined in Equation 3.

R38R

G WB2+=1 (3)

where RWB2 is the resistor between the W2 and B2 terminals.

VIN

RDAC2B2 R42

W2 B2

W2

VOUT

OAVOUTC110nF

R411.7kΩ

R382.7kΩ

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Figure 4. Linear Noninverting Amplifier

The noninverting amplifier with pseudologarithmic gain is shown in Figure 5, and the gain is defined in Equation 4.

AW2

WB2

RR

G +=1 (4)

where: RWB2 is the resistor between the W2 and B2 terminals. RAW2 is the resistor between the A2 and W2 terminals.

VIN

RDAC2

B2A2 R42W2 B2

W2

VOUT

OAVOUT

A2

C110nF

R411.7kΩ

R43

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Figure 5. Pseudologarithmic Noninverting Amplifier

R43 and R42 can be used to set the maximum and minimum gain limits.

The inverting amplifier with linear gain is shown in Figure 6, and the gain is defined in Equation 5.

Note that the input signal, VIN, must be negative.

R38R

G WB2−= (5)

where RWB2 is the resistor between the W2 and B2 terminals.

VIN

RDAC2B2 R42

W2 B2

W2

VOUT

OAVOUTC110nF

R411.7kΩ

R382.7kΩ

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Figure 6. Linear Inverting Amplifier

Table 6. Amplifier Selection Link Options Amplifier Gain Link Label1 VIN Range Noninverting Linear A27 LINEAR 0 V to VDD A29 NON-INVERTING A30 NON-INVERTING Pseudologarithmic A27 PSEUDOLOG 0 V to VDD A29 NON-INVERTING A30 NON-INVERTING Inverting Linear A27 LINEAR −VDD to 0 V A29 INVERTING A30 INVERTING

1 See Figure 14.



EVALUATION BOARD SOFTWARE INSTALLING THE SOFTWARE The EVAL-AD5222SDZ evaluation kit includes evaluation board software provided on a CD. The software is compatible with Windows® XP, Windows Vista, and Windows 7 (both 32-bit and 64-bit).

Install the software before connecting the SDP-B board to the USB port of the PC to ensure that the SDP-B board is recognized when it is connected to the PC.

1. Start the Windows operating system and insert the CD. 2. The installation software opens automatically. If it does

not, run the setup.exe file from the CD. 3. After installation is completed, power up the evaluation

board as described in the Power Supplies section. 4. Connect the EVAL-AD5222SDZ to the SDP-B board and the

SDP-B board to the PC using the USB cable included in the evaluation kit.

5. When the software detects the evaluation board, follow the instructions that appear to finalize the installation.

To uninstall the program, click Start > Control Panel > Add or Remove Programs > AD5222 Eval Board.

RUNNING THE SOFTWARE To run the program, do the following:

1. Click Start > All Programs > Analog Devices > AD5222 > AD5222 Eval Board.

2. If the SDP-B board is not connected to the USB port when the software is launched, a connectivity error displays (see Figure 7). Simply connect the evaluation board to the USB port of the PC, wait a few seconds, click Rescan, and follow the instructions.

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Figure 7. Pop-Up Window Error

The main window of the EVAL-AD5222SDZ software then opens, as shown in Figure 8.

SOFTWARE OPERATION The main window of the EVAL-AD5222SDZ software is divided into the following sections: RDAC1 and RDAC2. The features of the main window are as follows:

• RDAC1 and RDAC2 can be used to update the RDAC registers by typing the desired number of steps and clicking UP or DOWN.

• INDEPENDENT MODE ENABLE allows you to update each RDAC register independently.

• Clicking EXIT closes the program but does not reset the part.

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Figure 8. EVAL-AD5222SDZ Software Main Window


http://www.analog.com/blackfin_hwsdpb







EVALUATION BOARD SCHEMATICS AND ARTWORK

10367-011

MU

LTIC

HANN

EL

I2C

SPI

U/D

0x5E0x

5E0x

58

0x5A

1AG

ND2

2B2

3A2

7A4

8W

4

9DG

ND

10SH

DN

11SY

NC

12DI

N

5AG

ND4

6B4

4W

2

21AG

ND1

19A3

13SD

O

14SC

LK

15RE

SET

16VD

D

17AG

ND3

18W

3

24B1

22W

1

23A1

20B3U6

AD84

03

1W

1

2B1

3A1

7B2

8A2

9SD

A

10VS

S

11A3

12B3

5W

P

6W

2

4AD

0

19W

4

13W

3

14SC

L

15DG

ND

16AD

1

17A4

18B4

20VD

DU7

AD52

54

1NC

2NC

3G

ND

7SH

DN

8DI

N

9SC

LK

10SD

O

11VS

S

12NC

5RE

SET

6VD

D

4SY

NC

21B2

19A2

13B3

14W

3

15A3

16B1

17W

1

18A1

24B4

22A4

23W

4

20W

2

U8AD

5204

4G

ND

5VD

D

6SC

L8

A2

7SD

A1

B1

2A1

3W

29

B2

10W

1

U1AD

5243

4GN

D

5VD

D

6SC

LK

8SY

NC7

DIN

1B1

2A1

3W

29

B2

10W

1

U2AD

5162

4G

ND

5VD

D

6SC

L8

A2

7SD

A1

B1

2A1

3W

29

B2

10W

1

U3AD

5172

_SO

CKET

1O

1

2SC

LK3

DIN

7A1

8W

1

9B1

10A2

11W

2

12B2

5G

ND6

VSS

4SD

O

19VD

D

13B3

14W

3

15A3

16B4

17W

4

18A4

20W

P

21RE

SET

22SY

NC

23RD

Y

24O

2

U4AD

5233

4VS

S

5W

2

6A2

8G

ND7

B2

1B1

2A1

3W

1

9M

ODE

10DA

CSEL

11U/

D12

CLK

13CS

14VD

DU5

AD52

22

4W

15

B1

6A1

8VS

S

7SD

A

1VD

D

2AD

0

3W

P

9SC

L

10DG

ND

11AD

112

A3

13B3

14W

3

U9AD

5252

4GN

D5

VSS

6A1

8B1

7W

1

1SC

LK2

DIN

3SD

O

9B2

10W

2

11A2

12VD

D

13W

P14

RESE

T

15SY

NC

16RD

Y

U10

AD52

32

4G

ND5

VSS

6A1

8B1

7W

1

1SC

LK2

DIN

3SD

O

9B2

10W

2

11A2

12VD

D

13W

P14

RESE

T

15SY

NC

16RD

Y

U11

AD52

35

4GN

D5

VSS

6V1

8B1

7W

1

1SC

LK2

DIN

3SD

O

9B2

10W

2

11V2

12VD

D

13W

P14

RESE

T

15SY

NC

16RD

Y

U12

ADN2

850

A1

W1-

1 B1 A2

W2-

1 B2 A3

W3-

1 B3 A4

W4-

1 B4

SHDN

RESE

T

SCLK

SDO

DIN

SYNC

-1

A1

W1-

8 B1 A2

W2-

8 B2 A3

W3-

8 B3 A4

W4-

8 B4

SDA

SCL

WP

A1

W1-

5 B1 A2

W2-

5 B2

RDY

SDO

DIN

SCLK

SYNC

-5

WP

RESE

T

VDD

VDD

VSS

VSS

VDD

A1

W1-

4 B1

W2-

4 B2

SYNC

-4DI

NSC

LK

VDD

A1

W1-

2 B1 A2

W2-

2 B2 A3

W3-

2 B3 A4

W4-

2 B4

SYNC

-2

SCLK

DIN

SDO

RESE

T

SHDN

VDD

VSS

A1

W1-

3 B1 A2

W2-

3 B2 A3

W3-

3 B3 A4

W4-

3 B4

O1

O2

RDY

SDO

SCLK

DIN

SYNC

-3

RESE

T

WP

VDD VS

S

W1-

6 B1

W2-

6 B2 V1 V2

RDY

SDO

DIN

SCLK

SYNC

-6

WP

RESE

T

VDD VS

S

A1

W1-

9 B1 A2

W2-

9 B2

A1

W1-

7 B1 A2

W2-

7 B2

RDY

SDO

DIN

SCLK

SYNC

-7

WP

RESE

T

VDD

VSS

VDD

SCL

SDA

WP

VSS

VDD

A1

W1-

10 B1 A2

W2-

10 B2

SDA

SCL

A1

W1-

11 B1 A2

W2-

11 B2

SDA

SCL

VDD

VDD

A1

W1-

12 B1 A2

W2-

12 B2

CS CLK

U/D

DACS

ELM

ODE

VDD

VSS

Figure 9. Schematic of Multiboard Digital Potentiometers



VDD

DAC + FLOATING DAC + BW

PSEUDOLOG ATTENUATOR

B1

AC

AD8403-1

AD5204-1

AD5233-1

AD5162-1

AD5232-1

ADN2850-1

AD5235-1

AD5254-1

AD5252-1

AD5172

AD5243-1

W1

AD5222-1

+

-1

2

3U14-A

AD8618ARZ

BUF-W1 W1_BUF

R34

R35

R39

R40

AC_INPUT C3

A1

B1

R36

ABC

A20

ABC

A21

R3

R4

3 +2 -

1

U15-A

AD8652AR

5 +

6 - 7

U15-B

AD8652AR

8V+

4V-U15-C

W1-1

W1-2

W1-3

W1-4

W1-5

W1-6

W1-7

W1-8

W1-9

W1-10

W1-11

W1

W1-12

VDD

VSS

A1

B1

VSS

VDD

VSS

VDD

VSS

1036

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2

AC + DC

Figure 10. Schematic of Multiboard RDAC0 Circuits

10

367-

013

INVERTING AND NON-INVERTING WITH LINEAR AND PSEUDO-LOG GAIN

DIGIPOT

PSEUDOLOG

LINEARNON-INVERTING

INVERTING

NON-INVERTING

INVERTING

CIRCUIT CONNECTION

VIN

GND

+

-

76

5U14-B

AD8618ARZ

AD8403 -2

AD5204 -2

AD5233 -2

AD5162 -2

AD5232 -2

ADN2850 -2

AD5235 -2

AD5254 -2

AD5252 -2

AD5172 -2

AD5243 -2

AD5322 -2

W2

VOUT

R38

J2-1

J2-2

R41

R42

R43

B2A2

OAV

OU

T

C1

BA A29

BAA27

BA A30

W2-1

W2-2

W2-3

W2-4

W2-5

W2-6

W2-7

W2-8

W2-9

W2-10

W2-11

W2-12

W2

A2

B2W2

Figure 11. Schematic of Multiboard RDAC1 Circuits



10367-014

POW

ER-S

UPP

LIES

EXT

VD

D +5V

+3.3

V

GN

D

EXT

VSS

GN

D

CH

ANN

ELS

3 AN

D 4

POW

ER-S

UPP

LY

DIG

ITAL

PIN

SC

UR

REN

T M

ON

ITO

R+C

2410

uFC

250.

1uF C26

0.1u

F+

C27

10uF

J1-1

J1-2

J1-3

A B C

A25

A BA24

+ -14

1312U

14-D AD

8618

ARZ

AD84

03-4

AD52

04-4

AD52

33-4

AD52

54-4

+ -8

910U

14-C AD

8618

ARZ

AD84

03-3

AD52

04-3

AD52

33-3

AD52

54-3

BUF-

4

BUF-

3

A4

VOU

T4

B4 A3

VOU

T3

B3

W4

W3

O2

O1

V2V1

C2

0.1u

F C4

0.1u

F

VSS

VDD

+3.3

V+5

V

W4-

1

W4-

2

W4-

3

W4-

8

W3-

1

W3-

2

W3-

3

W3-

8

B4 A3

B3A4

O1

O2

V1

V2

Figure 12. Schematic of AD5222 Power Supplies and Other Channels




10367-015

MU

X-C

S

LEVE

LTR

ANSL

ATO

R

TEST

POIN

TS

SDP

BOAR

DC

ONN

ECTO

RAN

DEE

PRO

M

EXTE

RN

ALC

ON

TRO

LC

ONN

ECTI

ON

SPO

RT

UART

SPI

TIM

ERS

INPU

T/O

UTP

UT

GEN

ERAL

CONT

ROL

BLAC

KFIN

PORT

PARA

LLEL

FUTU

REUS

E

I2C

POW

ERSU

PPLY

1VI

N_4-

12V

2N/

C3

GND

4GN

D5

5V_U

SB6

GND

7PA

R_D2

38

PAR_

D21

9PA

R_D1

910

PAR_

D17

11GN

D

12PA

R_D1

413

PAR_

D13

14PA

R_D1

115

PAR_

D916

PAR_

D7

17GN

D

18PA

R_D5

19PA

R_D3

20PA

R_D1

21PA

R_RD

22PA

R_CS

23GN

D

24PA

R_A3

25PA

R_A1

26PA

R_FS

327

PAR_

FS1

28GN

D

29SP

ORT

_DR3

30SP

ORT

_DR2

31SP

ORT

_DR1

32SP

ORT

_DT1

33SP

ORT

_DT2

34SP

ORT

_DT3

35SP

ORT

_INT

36GN

D

37SP

I_SE

L_B

38SP

I_SE

L_C

39SP

I_SE

L1/_

SS

40GN

D

41SD

A_1

42SC

L_1

43G

PIO

044

GPI

O2

45G

PIO

4

46GN

D

47G

PIO

6

48TM

R_A

49TM

R_C

50FU

TURE

51FU

TURE

52GN

D

53FU

TURE

54FU

TURE

55FU

TURE

56FU

TURE

57FU

TURE

58GN

D

59UA

RT_R

X

60RE

SET_

IN61

BMO

DE1

62UA

RT_T

X

63GN

D

64FU

TURE

65FU

TURE

66FU

TURE

67FU

TURE

68FU

TURE

69GN

D

70FU

TURE

71FU

TURE

72TM

R_D

73TM

R_B

74GP

IO7

75GN

D

76GP

IO5

77GP

IO3

78GP

IO1

79SC

L_0-

EEPR

OM

80SD

A_0-

EEPR

OM

81GN

D

82SP

I_CL

K83

SPI_

MIS

O84

SPI_

MO

SI85

SPI_

SEL_

A

86GN

D

87SP

ORT

_TSC

LK88

SPO

RT_D

TO

89SP

ORT

_TFS

90SP

ORT

_RFS

91SP

ORT

_DR0

92SP

ORT

_RSC

LK

93GN

D

94PA

R_CL

K95

PAR_

FS2

96PA

R_A0

97PA

R_A2

98GN

D

99PA

R_IN

T10

0PA

R_W

R

101

PAR_

D010

2PA

R_D2

103

PAR_

D4

104

GND

105

PAR_

D610

6PA

R_D8

107

PAR_

D10

108

PAR_

D12

109

GND

110

PAR_

D15

111

PAR_

D16

112

PAR_

D18

113

PAR_

D20

114

PAR_

D22

115

GND

116

V_IO

(3.3

V)11

7GN

D11

8GN

D11

97V

_UNR

EGO

UT12

07V

_UNR

EGO

UT

J22

BLAC

KFIN

-DB_

FEM

ALE_

CON

NEC

TOR_

2

1A0

2A1

3A2

4VS

S5

SDA

6SC

L7

WP

8VC

CU25

24LC

01

D6 LED

R37

1K

DGND

AGND

4S8

5S6

11A0

10A1

6EN

9A2

1S5

14S2

2S7

12S4

13S1

3D

7VS

S

8G

ND

15S3

16VD

D

A22

ADG

658

35A0

36A1

37A2

38A3

39A4

40A5

1A6

2A7

3A8

4A9

5A1

06

A11

7A1

28

A13

9A1

410

A15

30B0

29B1

28B2

27B3

26B4

25B5

24B6

23B7

22B8

21B9

20B1

019

B11

18B1

217

B13

16B1

415

B15

32BE

231

BE1

34SE

L

11G

ND33

VCC

U13

ADG3

247-

CSP

MUX

-A0|

CS

MUX

-A2|

U/D

SCLK

_BF

DIN_

BFM

UX-A

1|DA

CSEL

RDY|

MO

DE

CLK

SDO

_BF

SYNC

_BF

SDA_

BF

SHDN

_BF

SCL_

BF

RESE

T_BF

WP_

BF

+3V3

VDD

+5V VS

S

A23

A5 A6 A7 A8

A9 A10

A11

A12

A13

A14

A16

A17

A18

R2 2k2

R1 2k2

DIN_

BFSD

O_B

FSC

LK_B

F

SYNC

_BF

RDY|

MO

DERE

SET_

BFW

P_BF

SDA_

BF

SCL_

BF SHDN

_BF

+3.3

V+5

V

+3.3

V

MUX

-A2|

U/D

MUX

-A1|

DACS

ELM

UX-A

0|CS

MUX

-A0|

CSM

UX-A

1|DA

CSEL

MUX

-A2|

U/D

SYNC

-1

SYNC

-2

SYNC

-3

SYNC

-4

SYNC

-5

SYNC

-6

SYNC

-7

VDD

+3.3

V

CLK_

BF

SCLK

_BF

SCLK

DIN_

BFDI

NSD

O_B

FSD

OSY

NC_B

FSY

NCSY

NCRE

SET_

BFW

P_BF

SHDN

_BF

RDY_

BF

RESE

TW

PSH

DNRD

YSD

A_BF

SCL_

BFSD

ASC

LM

UX-A

0|CS

MUX

-A1|

DACS

ELM

UX-A

2|U/

DRD

Y|M

ODE

CS DACS

ELU/

DM

ODE

CLK_

BFCL

K

+5V

MUX

-A0|

CS

MUX

-A1|

DACS

EL

MUX

-A2|

U/D

RDY|

MO

DE

CLK_

BF

SCLK

_BF

DIN_

BF

SDO

_BF

SYNC

_BF

SDA_

BF

SCL_

BF

SHDN

_BF

RESE

T_BF

WP_

BF

VDD

VSS

+5V

+3.3

V

+3.3

V

Figure 13. Schematic of SDP-B Connector



1036

7-01

6

Figure 14. Component Side View

1036

7-01

7

Figure 15. Component Placement Drawing

1036

7-01

8

Figure 16. Layer 2 Side PCB Drawing



1036

7-01

9

Figure 17. Layer 3 Side PCB Drawing

1036

7-02

0

Figure 18. Solder Side PCB Drawing



ORDERING INFORMATION BILL OF MATERIALS

Table 7. Qty Reference Designator Description Supplier1/Part Number 1 C1 10 nF capacitor, 0805 FEC 1692285 4 C2, C4, C25, C26 0.1 µF capacitor, 0603 FEC 138-2224 1 C3 1 µF capacitor, 0402 FEC 1288253 2 C24, C27 10 µF capacitor, 1206 FEC 1611967 1 D6 LED, green FEC 579-0852 1 J1 3-pin connector FEC 151790 1 J2 2-pin connector FEC 151789 1 J22 Receptacle, 0.6 mm, 120-way Digi-Key H1219-ND 4 A20, A21, A24, A25 Header 2-row, 36 + 36 way and jumper socket, black FEC 148-535 and FEC 150-410 3 A27, A29, A30 Header 1-row, 3-way and jumper socket, black FEC 102-2248 and FEC 150-410 4 BUF-W1, OAVOUT, BUF-3, BUF-4 Header 1-row, 2-way and jumper socket, black FEC 102-2247 and FEC 150-410 1 R41 1.78 kΩ resistor, 0603, 1% FEC 1170811 2 R1, R2 2.2 kΩ resistor, 0603, 1% FEC 933-0810 5 R3, R4, R38, R39, R40 2.7 kΩ resistor, 1206, 1% FEC 9337288 40 AD5162-1, AD5162-2, AD5222-1, AD5222-2,

AD5204-1, AD5204-2, AD5204-3, AD5204-4, AD5222-1, AD5222-2, AD5232-1, AD5232-2, AD5233-1, AD5233-2, AD5233-3, AD5233-4, AD5235-1, AD5235-2, AD5243-1, AD5243-2, AD5252-1, AD5252-2, AD5222-1, AD5222-2, AD5222-3, AD5222-4, AD5222-1, AD5222-2, AD5222-3, AD5222-4, ADN2850-1, ADN2850-2, R34, R35, R42, R43

0 Ω resistor, 0603 FEC 9331662

1 R37 1 kΩ resistor, 0603, 1% FEC 933-0380 6 3.3 V, 5 V, DGND, AGND, VDD, VSS Test point, PCB, black, PK100 FEC 873-1128 34 A1, A2, A3, A4, RDY|MODE, RESET_BF,

SCL_BF, SCLK_BF, SDA_BF, SDO_BF, SHDN_BF, SYNC_BF, MUX-A0|CS, MUX-A1|DACSEL MUX-A2|U/D, O1, O2, DIN_BF, CLK, B1, B2, B3, B4, V1, V2, VOUT, VOUT2, VOUT3, VOUT4, W1, W1_BUF, W2, W3, W4, WP_BUF

Test point, PCB, red, PK100 FEC 873-1144

1 U1 256-position, dual-channel, I2C-compatible digital potentiometer

Analog Devices AD5243

1 U2 256-position, dual-channel, SPI digital potentiometer


1 U3 256-position, one-time programmable, dual-channel, I2C digital potentiometer


1 U4 Nonvolatile, quad, 64-position digital potentiometer


1 U5 Dual, increment/decrement digital potentiometer Analog Devices AD5222 1 U6 4-channel digital potentiometer Analog Devices AD8403 1 U7 Quad, 256-position, I2C, nonvolatile memory digital

potentiometer Analog Devices AD5254

1 U8 4-channel digital potentiometer Analog Devices AD5204 1 U9 I2C, nonvolatile memory, dual, 256-position digital

potentiometer Analog Devices AD5252

1 U10 Nonvolatile memory, dual, 256-position digital potentiometer


1 U11 Dual, 1024-position digital potentiometer with nonvolatile memory and SPI interface















Qty Reference Designator Description Supplier1/Part Number 1 U12 Dual, 1024-position digital rheostat with

nonvolatile memory and SPI interface Analog Devices ADN2850

1 U13 2.5 V/3.3 V, 16-bit (dual 8-bit), two-port level translator bus switch

Analog Devices ADG3247

1 U14 Precision, 20 MHz, CMOS, quad, rail-to-rail operational amplifier


1 U15 50 MHz, precision, low distortion, low noise CMOS amplifier


1 U25 24LC64 EEPROM FEC 975-8070 1 A22 3 V/5 V, ± 5 V CMOS, 8-channel analog multiplexer Analog Devices ADG658 1 FEC refers to Farnell Electronic Component Distributors; Digi-Key refers to Digi-Key Corporation.

RELATED LINKS Resource Description AD5243 Product Page, 256-Position Dual-Channel I2C Compatible Digital Potentiometer AD5162 Product Page, 256-Position Dual-Channel SPI Digital Potentiometer AD5233 Product Page, Nonvolatile, Quad, 64-Position Digital Potentiometer AD5222 Product Page, Dual, Increment/Decrement Digital Potentiometer AD8403 Product Page, 4-Channel Digital Potentiometer AD5254 Product Page, Quad 256-Position I2C Nonvolatile Memory, Digital Potentiometer AD5204 Product Page, 4-Channel Digital Potentiometer AD5252 Product Page, I2C, Nonvolatile Memory, Dual 256-Position Digital Potentiometer AD5232 Product Page, Nonvolatile Memory, Dual, 256-Position Digital Potentiometer AD5235 Product Page, Nonvolatile Memory, Dual 1024-Position Digital Potentiometer ADN2850 Product Page, Nonvolatile Memory, Dual 1024-Position Digital Resistor ADG3247 Product Page, 2.5 V/3.3 V, 16-Bit (Dual 8-Bit), 2-Port Level Translator, Bus Switch ADG658 Product Page, 3 V/5 V ± 5 V CMOS 8-Channel Analog Multiplexer AD8652 Product Page, 50 MHz, Precision, Low Distortion, Low Noise CMOS Amplifier AD8618 Product Page, Precision 20 MHz CMOS Quad Rail-to-Rail Operational Amplifier

http://www.analog.com/ADN2850

http://www.analog.com/ADG3247














http://www.analog.com/ADN2850







NOTES



NOTES

I2C refers to a communications protocol originally developed by Philips Semiconductors (now NXP Semiconductors).

ESD Caution ESD (electrostatic discharge) sensitive device. Charged devices and circuit boards can discharge without detection. Although this product features patented or proprietary protection circuitry, damage may occur on devices subjected to high energy ESD. Therefore, proper ESD precautions should be taken to avoid performance degradation or loss of functionality.

Legal Terms and Conditions By using the evaluation board discussed herein (together with any tools, components documentation or support materials, the “Evaluation Board”), you are agreeing to be bound by the terms and conditions set forth below (“Agreement”) unless you have purchased the Evaluation Board, in which case the Analog Devices Standard Terms and Conditions of Sale shall govern. Do not use the Evaluation Board until you have read and agreed to the Agreement. Your use of the Evaluation Board shall signify your acceptance of the Agreement. This Agreement is made by and between you (“Customer”) and Analog Devices, Inc. (“ADI”), with its principal place of business at One Technology Way, Norwood, MA 02062, USA. Subject to the terms and conditions of the Agreement, ADI hereby grants to Customer a free, limited, personal, temporary, non-exclusive, non-sublicensable, non-transferable license to use the Evaluation Board FOR EVALUATION PURPOSES ONLY. Customer understands and agrees that the Evaluation Board is provided for the sole and exclusive purpose referenced above, and agrees not to use the Evaluation Board for any other purpose. Furthermore, the license granted is expressly made subject to the following additional limitations: Customer shall not (i) rent, lease, display, sell, transfer, assign, sublicense, or distribute the Evaluation Board; and (ii) permit any Third Party to access the Evaluation Board. As used herein, the term “Third Party” includes any entity other than ADI, Customer, their employees, affiliates and in-house consultants. The Evaluation Board is NOT sold to Customer; all rights not expressly granted herein, including ownership of the Evaluation Board, are reserved by ADI. CONFIDENTIALITY. This Agreement and the Evaluation Board shall all be considered the confidential and proprietary information of ADI. Customer may not disclose or transfer any portion of the Evaluation Board to any other party for any reason. Upon discontinuation of use of the Evaluation Board or termination of this Agreement, Customer agrees to promptly return the Evaluation Board to ADI. ADDITIONAL RESTRICTIONS. Customer may not disassemble, decompile or reverse engineer chips on the Evaluation Board. Customer shall inform ADI of any occurred damages or any modifications or alterations it makes to the Evaluation Board, including but not limited to soldering or any other activity that affects the material content of the Evaluation Board. Modifications to the Evaluation Board must comply with applicable law, including but not limited to the RoHS Directive. TERMINATION. ADI may terminate this Agreement at any time upon giving written notice to Customer. Customer agrees to return to ADI the Evaluation Board at that time. LIMITATION OF LIABILITY. THE EVALUATION BOARD PROVIDED HEREUNDER IS PROVIDED “AS IS” AND ADI MAKES NO WARRANTIES OR REPRESENTATIONS OF ANY KIND WITH RESPECT TO IT. ADI SPECIFICALLY DISCLAIMS ANY REPRESENTATIONS, ENDORSEMENTS, GUARANTEES, OR WARRANTIES, EXPRESS OR IMPLIED, RELATED TO THE EVALUATION BOARD INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, TITLE, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS. IN NO EVENT WILL ADI AND ITS LICENSORS BE LIABLE FOR ANY INCIDENTAL, SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES RESULTING FROM CUSTOMER’S POSSESSION OR USE OF THE EVALUATION BOARD, INCLUDING BUT NOT LIMITED TO LOST PROFITS, DELAY COSTS, LABOR COSTS OR LOSS OF GOODWILL. ADI’S TOTAL LIABILITY FROM ANY AND ALL CAUSES SHALL BE LIMITED TO THE AMOUNT OF ONE HUNDRED US DOLLARS ($100.00). EXPORT. Customer agrees that it will not directly or indirectly export the Evaluation Board to another country, and that it will comply with all applicable United States federal laws and regulations relating to exports. GOVERNING LAW. This Agreement shall be governed by and construed in accordance with the substantive laws of the Commonwealth of Massachusetts (excluding conflict of law rules). Any legal action regarding this Agreement will be heard in the state or federal courts having jurisdiction in Suffolk County, Massachusetts, and Customer hereby submits to the personal jurisdiction and venue of such courts. The United Nations Convention on Contracts for the International Sale of Goods shall not apply to this Agreement and is expressly disclaimed.

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Documents

Evaluation Board for the AD5222 Digital Potentiometer · EVAL-AD5222SDZ User Guide UG-349 OneTechnologyWay•P.O.Box9106•Norwood,MA 02062-9106,U.S.A.•Tel:781.329.4700•Fax:781.461.3113•