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SPH0655LM4H-1 CORNELL II
MULTIMODE DIGITAL BOTTOM PORT SISONIC™ MICROPHONE
knowles.com | DATASHEET SPH0655LM4H-1 Rev B © 2019, Knowles Electronics, LLC, Itasca, IL, USA, All Rights Reserved.
SiSonic, Knowles and the logo are trademarks of Knowles Electronics, LLC.
The SPH0655LM4H-1 is a miniature, high-performance, low power, bottom port silicon digital microphone with a single bit PDM output. Using Knowles’ proven high performance SiSonic™ MEMS technology, the SPH0655LM4H-1 consists of an acoustic sensor, a low noise input buffer, and a sigma-delta modulator. These devices are suitable for applications such as cellphones, smart phones, laptop computers, sensors, digital still cameras, portable music recorders, and other portable electronic devices where excellent wideband audio performance and RF immunity are required. In addition, the SPH0655LM4H-1 offers multiple performance modes.
ABSOLUTE MAXIMUM RATINGS
Parameter Absolute Maximum Rating Units
MEMS Transducer Buffer
Charge Pump Vdd
SELECT
CLK
DATA
GND
Regulator
Control
Σ∆ ADC
PRODUCT FEATURES
• Low Distortion /High AOP • High SNR • Low Current Consumption in Low-
Power Mode • Flat Frequency Response • High Drive Capability • RF Shielded • Bottom Port • Sensitivity Matching • Supports Dual Multiplexed Channels • Multiple Performance Modes (Sleep,
Low-Power, Normal) • Ultra-Stable Performance • Omnidirectional • Standard SMD Reflow • LGA Package
TYPICAL APPLICATIONS
• Portable Electronics • Cellphones • Laptop Computers • Tablets • Digital Still Cameras • Portable Music Recorders
MULTIMODE DIGITAL BOTTOM PORT SISONIC™ MICROPHONE
knowles.com | DATASHEET SPH0655LM4H-1 Rev B © 2019, Knowles Electronics, LLC, Itasca, IL, USA, All Rights Reserved.
2 SiSonic, Knowles and the logo are trademarks of Knowles Electronics, LLC.
ACOUSTIC & ELECTRICAL SPECIFICATIONS1
Parameter Symbol Conditions Min Typ Max Units
MULTIMODE DIGITAL BOTTOM PORT SISONIC™ MICROPHONE
knowles.com | DATASHEET SPH0655LM4H-1 Rev B © 2019, Knowles Electronics, LLC, Itasca, IL, USA, All Rights Reserved.
3 SiSonic, Knowles and the logo are trademarks of Knowles Electronics, LLC.
Parameter Symbol Conditions Min Typ Max Units
Parameter Symbol Conditions Min Typ Max Units
MULTIMODE DIGITAL BOTTOM PORT SISONIC™ MICROPHONE
knowles.com | DATASHEET SPH0655LM4H-1 Rev B © 2019, Knowles Electronics, LLC, Itasca, IL, USA, All Rights Reserved.
4 SiSonic, Knowles and the logo are trademarks of Knowles Electronics, LLC.
Parameter Symbol Conditions Min Typ Max Units
Parameter Symbol Conditions Min Typ Max Units
MULTIMODE DIGITAL BOTTOM PORT SISONIC™ MICROPHONE
knowles.com | DATASHEET SPH0655LM4H-1 Rev B © 2019, Knowles Electronics, LLC, Itasca, IL, USA, All Rights Reserved.
5 SiSonic, Knowles and the logo are trademarks of Knowles Electronics, LLC.
Microphone SELECT Asserts DATA on Latch DATA on
Tdd
Tedge
DATA (SELECT = Vdd)
Tdv Tdz
CLOCK
DATA (SELECT = Ground)
Vih
Vil
Tdv Tdz
High Z Mic (Low) Data
High Z Mic (High)
Data
Voh
Vol
Tedge
Voh
Vol
1/Fclock
Tdd Thold
Thold
Low
High
Ext CLOCK Input
Vhyst
Vl-h
Internal Logic Level
Vh-l
Vdd SEL
MIC1
CLOCK DATA
GND
Vdd
GND
PDM Mic Interface
CODEC OR APPLICATION PROCESSOR
Vdd
CLOCK DATA
Vdd
SEL
MIC2
CLOCK DATA
GND
Vdd
0.1µF
Vdd
0.1µF Zrf Rterm
Zrf Rterm
Zrf
Zrf
Zrf
Zrf
Rterm
Vdd
GND
PDM Mic Interface
CODEC OR APPLICATION PROCESSOR
Vdd
CLOCK DATA
SEL
MIC
CLOCK DATA
GND
Vdd Vdd
NC
Zrf
Zrf Rterm
Rterm
0.1µF
Zrf
Low-Power Mode 500 kHz ≤ Fclock ≤ 900 kHz
1.65V ≤ Vdd ≤ 3.6V
Normal Mode 1.1 MHz ≤ Fclock ≤ 4.8 MHz
1.65V ≤ Vdd ≤ 3.6V
Sleep Mode Fclock < 250 kHz
1.65V ≤ Vdd ≤ 3.6V
Powered Down Mode
Vdd = 0V
MULTIMODE DIGITAL BOTTOM PORT SISONIC™ MICROPHONE
knowles.com | DATASHEET SPH0655LM4H-1 Rev B © 2019, Knowles Electronics, LLC, Itasca, IL, USA, All Rights Reserved.
6 SiSonic, Knowles and the logo are trademarks of Knowles Electronics, LLC.
PERFORMANCE CURVES
MULTIMODE DIGITAL BOTTOM PORT SISONIC™ MICROPHONE
knowles.com | DATASHEET SPH0655LM4H-1 Rev B © 2019, Knowles Electronics, LLC, Itasca, IL, USA, All Rights Reserved.
7 SiSonic, Knowles and the logo are trademarks of Knowles Electronics, LLC.
MULTIMODE DIGITAL BOTTOM PORT SISONIC™ MICROPHONE
knowles.com | DATASHEET SPH0655LM4H-1 Rev B © 2019, Knowles Electronics, LLC, Itasca, IL, USA, All Rights Reserved.
8 SiSonic, Knowles and the logo are trademarks of Knowles Electronics, LLC.
MECHANICAL SPECIFICATIONS
Pin # Pin Name Type Description
Example Land Pattern Example Solder Stencil Pattern
Item Dimension Tolerance
MULTIMODE DIGITAL BOTTOM PORT SISONIC™ MICROPHONE
knowles.com | DATASHEET SPH0655LM4H-1 Rev B © 2019, Knowles Electronics, LLC, Itasca, IL, USA, All Rights Reserved.
9 SiSonic, Knowles and the logo are trademarks of Knowles Electronics, LLC.
PACKAGING & MARKING DETAIL
Model Number Suffix Reel Diameter Quantity Per Reel Component Surface Resistance (ohms)
MULTIMODE DIGITAL BOTTOM PORT SISONIC™ MICROPHONE
knowles.com | DATASHEET SPH0655LM4H-1 Rev B © 2019, Knowles Electronics, LLC, Itasca, IL, USA, All Rights Reserved.
10 SiSonic, Knowles and the logo are trademarks of Knowles Electronics, LLC.
RECOMMENDED REFLOW PROFILE
Profile Feature Pb-Free
Time 25°C to Peak
Ramp-down
Ramp-
TSMIN
TSMAX
TL
TP
t
tP
tS Preheat
Time 25°C
MULTIMODE DIGITAL BOTTOM PORT SISONIC™ MICROPHONE
knowles.com | DATASHEET SPH0655LM4H-1 Rev B © 2019, Knowles Electronics, LLC, Itasca, IL, USA, All Rights Reserved.
11 SiSonic, Knowles and the logo are trademarks of Knowles Electronics, LLC.
MATERIALS STATEMENT
RELIABILITY SPECIFICATIONS
Test Description
MULTIMODE DIGITAL BOTTOM PORT SISONIC™ MICROPHONE
12
Knowles Corporation 1151 Maplewood Drive Itasca, Illinois 60143
Phone: 1 (630) 250-5100 Fax: 1 (630) 250-0575 sales@knowles.com
Model/Reference Number: Datasheet SPH0655LM4H-1 Rev B © Copyright 2019 Knowles
SPECIFICATION REVISIONS
Revision Specification Changes Date
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