Document
SPH0641LM4H-1 MORELLO
MULTIMODE DIGITAL BOTTOM PORT SISONIC™ MICROPHONE
The SPH0641LM4H-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 SPH0641LM4H-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 SPH0641LM4H-1 offers multiple performance modes.
Charge Pump
Regulator
MEMS Transducer
Buffer
Control Σ∆ ADC
Vdd
SELECT CLK DATA GND
ABSOLUTE MAXIMUM RATINGS
Parameter
Absolute Maximum Rating
Units
PRODUCT FEATURES
• 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 • Standard SMD Reflow • Omnidirectional • Small Size • LGA Package
TYPICAL APPLICATIONS
• Portable Electronics • Cellphones • Laptop Computers • Tablets • Digital Still Cameras • Portable Music Recorders
knowles.com | DATASHEET SPH0641LM4H-1 Rev D © 2018, Knowles Electronics, LLC, Itasca, IL, USA, All Rights Reserved. SiSonic, Knowles and the logo are trademarks of Knowles Electronics, LLC.
MULTIMODE DIGITAL BOTTOM PORT SISONIC™ MICROPHONE
ACOUSTIC & ELECTRICAL SPECIFICATIONS1
Parameter
Symbol Conditions
Min Typ Max Units
knowles.com | DATASHEET SPH0641LM4H-1 Rev D © 2018, Knowles Electronics, LLC, Itasca, IL, USA, All Rights Reserved. 2 SiSonic, Knowles and the logo are trademarks of Knowles Electronics, LLC.
MULTIMODE DIGITAL BOTTOM PORT SISONIC™ MICROPHONE
Parameter
Symbol Conditions
Min Typ Max Units
Parameter
Symbol Conditions
Min Typ Max Units
knowles.com | DATASHEET SPH0641LM4H-1 Rev D © 2018, Knowles Electronics, LLC, Itasca, IL, USA, All Rights Reserved. 3 SiSonic, Knowles and the logo are trademarks of Knowles Electronics, LLC.
MULTIMODE DIGITAL BOTTOM PORT SISONIC™ MICROPHONE
Parameter
Symbol Conditions
Min Typ Max Units
Parameter
Symbol Conditions
Min Typ Max Units
knowles.com | DATASHEET SPH0641LM4H-1 Rev D © 2018, Knowles Electronics, LLC, Itasca, IL, USA, All Rights Reserved. 4 SiSonic, Knowles and the logo are trademarks of Knowles Electronics, LLC.
MULTIMODE DIGITAL BOTTOM PORT SISONIC™ MICROPHONE
CLOCK
Vih Vil
1/Fclock
Tedge
Tedge
DATA (SELECT = Vdd)
DATA (SELECT = Ground)
Tdv Tdd
Voh
Mic (High) Data
Vol
Tdz Thold
High Z
Tdv
High Z
Tdd
Voh
Mic (Low) Data
Vol
Tdz Thold
High
Internal Logic Level
Vhyst
Low
Vh-l
Vl-h
Ext CLOCK Input
Normal Mode 1.0 MHz ≤ Fclock ≤ 4.8 MHz
1.6V ≤ Vdd ≤ 3.6V
Vdd
MIC1 Vdd
Rterm
CODEC OR APPLICATION PROCESSOR
SEL
DATA CLOCK
Vdd
GND
Rterm
PDM Mic Interface
CLOCK
Vdd MIC2
DATA
Vdd SEL
DATA CLOCK
Rterm
GND
GND
Microphone SELECT Asserts DATA on Latch DATA on
Sleep Mode Fclock < 280 kHz 1.6V ≤ Vdd ≤ 3.6V
Powered Down Mode
Vdd = 0V
Low-Power Mode 351 kHz ≤ Fclock ≤ 815 kHz
1.6V ≤ Vdd ≤ 3.6V
knowles.com | DATASHEET SPH0641LM4H-1 Rev D © 2018, Knowles Electronics, LLC, Itasca, IL, USA, All Rights Reserved. 5 SiSonic, Knowles and the logo are trademarks of Knowles Electronics, LLC.
MULTIMODE DIGITAL BOTTOM PORT SISONIC™ MICROPHONE
PERFORMANCE CURVES
knowles.com | DATASHEET SPH0641LM4H-1 Rev D © 2018, Knowles Electronics, LLC, Itasca, IL, USA, All Rights Reserved. 6 SiSonic, Knowles and the logo are trademarks of Knowles Electronics, LLC.
MULTIMODE DIGITAL BOTTOM PORT SISONIC™ MICROPHONE
knowles.com | DATASHEET SPH0641LM4H-1 Rev D © 2018, 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
MECHANICAL SPECIFICATIONS
Item
Dimension
Tolerance
Pin #
Pin Name
Type
Description
Example Land Pattern
Example Solder Stencil Pattern
knowles.com | DATASHEET SPH0641LM4H-1 Rev D © 2018, Knowles Electronics, LLC, Itasca, IL, USA, All Rights Reserved. 8 SiSonic, Knowles and the logo are trademarks of Knowles Electronics, LLC.
MULTIMODE DIGITAL BOTTOM PORT SISONIC™ MICROPHONE
PACKAGING & MARKING DETAIL
Model Number
Suffix Reel Diameter
Quantity Per Reel
Component
Surface Resistance (ohms)
knowles.com | DATASHEET SPH0641LM4H-1 Rev D © 2018, Knowles Electronics, LLC, Itasca, IL, USA, All Rights Reserved. 9 SiSonic, Knowles and the logo are trademarks of Knowles Electronics, LLC.
MULTIMODE DIGITAL BOTTOM PORT SISONIC™ MICROPHONE
RECOMMENDED REFLOW PROFILE
TP
TL TSMAX TSMIN
Ramp-up
tP
tS Preheat
tL
Ramp-down
25°C
Time 25°C to Peak
.