SPH0641LU4H-1
Digital Zero-Height SiSonicTM Microphone
With Multi-Mode And Ultrasonic Support
The SPH0641LU4H-1 is a miniature, highperformance, low power, bottom port
silicon digital microphone with a single bit
PDM output. Using Knowles’ proven high
performance SiSonicTM MEMS technology,
the SPH0641LU4H-1 consists of an acoustic
sensor, a low noise input buffer, and a
sigma-delta modulator. This microphone is
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 SPH0641LU4H-1 offers
multiple performance modes and supports
ultrasonic applications.
Revision: B
Sheet 1 of 15
Features:
High SNR of 64.3dB
Low Current Consumption of 235uA in
Low-Power Mode
Multiple performance modes (Sleep,
Low-Power, Standard Performance and
Ultrasonic Modes)
Flat Frequency Response
RF Shielded
Zero-Height MicTM
Supports Dual Multiplexed Channels
Omnidirectional
Ultrasonic Support
Sensitivity Matching
Small Size
Standard SMD Reflow
LGA Package
04/06/2015
© 2014 Knowles Electronics
SPH0641LU4H-1
1.
ABSOLUTE MAXIMUM RATINGS
Parameter
Absolute Maximum Rating
Units
VDD, DATA to Ground
-0.3, +5.0
V
CLOCK to Ground
-0.3, +5.0
V
SELECT to Ground
-0.3, +5.0
V
±5
mA
Indefinite to Ground or VDD
sec
-40 to +100
°C
Input Current
Short Circuit Current to/from DATA
Temperature Range
Stresses exceeding these “Absolute Maximum Ratings” may cause permanent damage to the device. These are
stress ratings only. Functional operation at these or any other conditions beyond those indicated under “Acoustic
& Electrical Specifications” is not implied. Exposure beyond those indicated under “Acoustic & Electrical
Specifications” for extended periods may affect device reliability.
2. ACOUSTIC & ELECTRICAL SPECIFICATIONS
TEST CONDITIONS: 23 ±2°C, 55±20% R.H., VDD=1.8 V, fCLOCK=2.4 MHz, SELECT pin grounded, no load, unless
otherwise indicated
General Microphone Specifications
Parameter
Symbol
Min
Typ
Max
Units
1.62
-
3.6
V
0
250
KHz
351
815
KHz
Standard
Performance Mode
1.024
2.475
MHz
Ultrasonic Mode
3.072
4.8
MHz
Supply Voltage
Conditions
VDD
Sleep Mode
Clock
Frequency
Range
Low-Power Mode
Sleep Current1,3
ISLEEP
DC Output
fCLOCK ≤ 250 kHz
-
80
Fullscale = ±100
-
0
Directivity
Increasing sound
pressure
Data Format
Output Load
Revision: 1
Release Level: DESIGN
Sheet 2 of 15
% FS
ISC
Grounded DATA pin
CLOAD
Increasing density of 1’s
½ Cycle PDM
1
-
20
mA
-
-
140
pF
4,5
fCLOCK ≤ 250 kHz
-
-
10
ms
4,6
fCLOCK ≥ 351 kHz
-
-
15
ms
Fall-asleep Time
Wake-up Time
-
Omnidirectional
Polarity
Short Circuit Current
µA
2/21/2012
© 2012 Knowles Electronics
SPH0641LU4H-1
Parameter
Power-up Time
Symbol
4,6
Mode-Change Time
Conditions
Min
Typ
Max
Units
VDD ≥ V(min)
-
-
50
ms
-
-
10
ms
4
Ultrasonic Mode
TEST CONDITIONS: fCLOCK =3.072 MHz, VDD=1.8 V, unless otherwise indicated
Parameter
Symbol
Conditions
Min
Typ
Max
Units
-
845
1000
µA
Supply Current2,3
IDD
Sensitivity
S
94 dB SPL @ 1 kHz
-27
-26
-25
dBFS
Signal to Noise Ratio
SNR
94 dB SPL @ 1 kHz,
A-weighted
-
64.3
-
dB(A)
Total Harmonic Distortion
THD
94 dB SPL @ 1 kHz, S = Typ
-
0.2
-
%
Acoustic Overload Point
AOP
10% THD @ 1 kHz, S = Typ
-
120
-
dB SPL
Power Supply Rejection Ratio
PSRR
200 mVpp sinewave @ 1 kHz
-
55
-
dBV/FS
Power Supply Rejection
PSR+N
100 mVpp square wave
@ 217 Hz, A-weighted
-
-84
-
dBFS
(A)
Standard Performance Mode
TEST CONDITIONS: fCLOCK = 2.4 MHz, VDD=1.8 V, unless otherwise indicated
Parameter
Symbol
Conditions
Min
Typ
Max
Units
Supply Current1,2,3
IDD
fCLOCK=2.4 MHz
-
620
700
µA
Sensitivity1
S
94 dB SPL @ 1 kHz
-27
-26
-25
dBFS
Signal to Noise Ratio
SNR
94 dB SPL @ 1 kHz,
A-weighted, fCLOCK=2.4 MHz
-
64.3
-
dB(A)
Total Harmonic Distortion
THD
94 dB SPL @ 1 kHz, S = Typ
-
0.2
-
%
Acoustic Overload Point
AOP
10% THD @ 1 kHz, S = Typ
-
120
-
dB SPL
Power Supply Rejection Ratio
PSRR
200 mVpp sinewave @ 1 kHz
-
55
-
dBV/FS
Power Supply Rejection
PSR+N
100 mVpp square wave
@ 217 Hz, A-weighted
-
-84
-
dBFS
(A)
Revision: B
Sheet 3 of 15
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© 2014 Knowles Electronics
SPH0641LU4H-1
Low-Power Mode
TEST CONDITIONS: fCLOCK = 768 kHz, VDD=1.8 V, unless otherwise indicated
Parameter
Symbol
Conditions
Min
Typ
Max
Units
IDD
fCLOCK=768 kHz
-
235
270
µA
S
94 dB SPL @ 1 kHz
-27
-26
-25
dBFS
Signal to Noise Ratio
SNR
94 dB SPL @ 1 kHz,
A-weighted (20 Hz - 8 kHz)
-
64
-
dB(A)
Total Harmonic Distortion
THD
94 dB SPL @ 1 kHz, S = Typ
-
0.2
-
%
Acoustic Overload Point
AOP
10% THD @ 1 kHz, S = Typ
-
120
-
dB SPL
Power Supply Rejection Ratio
PSRR
200 mVpp sinewave @ 1 kHz
-
59
-
dBV/FS
Power Supply Rejection
PSR+N
100 mVpp square wave@ 217 Hz,
A-weighted (20Hz - 8kHz)
-
-86
-
dBFS
(A)
Supply Current
2,3
Sensitivity
Microphone Interface Specifications
Parameter
Symbol
Conditions
Min
Typ
Max
Units
Logic Input High
VIH
0.7xVDD
-
3.6
V
Logic Input Low
VIL
-0.3
-
0.3xVDD
V
Logic Output High
VOH
IOUT = 2 mA
VDD -0.45
-
VDD
V
Logic Output Low
VOL
IOUT = 2 mA
0
-
0.45
V
fCLOCK ≤ 2.4 MHz
2.4MHz < fCLOCK ≤ 4.8 MHz
40
48
50
60
52
%
%
Clock Duty Cycle
Clock Rise/Fall Time
tEDGE
-
-
3
ns
Delay Time for Data
Assertion
tDD
18
28
40
ns
Delay Time for High Z7
tDZ
3
-
16
ns
1
100% tested.
IDD varies with CLOAD according to: ΔIDD = 0.5*VDD*ΔCLOAD*fCLOCK.
3
Typical and Maximum specifications are measured at standard test conditions.
4
Valid microphones states are: Powered Down Mode (mic off), Sleep Mode (low current, DATA = high-Z, fast startup),
Low-Power Mode (low clock speed), Standard Performance Mode (normal operation), and Ultrasonic Mode (high clock
speed).
5
Time from fCLOCK < 250 kHz to ISLEEP specification is met when transitioning from Active Mode to Sleep Mode.
6
Time from fCLOCK ≥ 351 kHz to all applicable specifications are met when transitioning from Sleep Mode to Active Mode.
2
7
tHOLD is dependent on CLOAD.
Revision: B
Sheet 4 of 15
04/06/2015
© 2014 Knowles Electronics
SPH0641LU4H-1
3.
MICROPHONE STATE DIAGRAM
Standard Performance Mode
3.6 ≥ VDD ≥ 1.62 V
1.024 MHz ≤fCLOCK ≤ 2.475 MHz
Powered Down
Mode
VDD = 0 V
Sleep Mode
3.6 ≥ VDD ≥ 1.62V
fCLOCK ≤ 250 kHz
Low-Power Mode
3.6 ≥ VDD ≥ 1.62 V
351 kHz ≤ fCLOCK ≤ 815 kHz
Ultrasonic Mode
3.6 ≥ VDD ≥ 1.62 V
3.072 MHz ≤ fCLOCK ≤ 4.8 MHz
Note: Do not power up into ultrasonic mode.
Do not wake-up from sleep mode into ultrasonic mode.
Revision: B
Sheet 5 of 15
04/06/2015
© 2014 Knowles Electronics
SPH0641LU4H-1
4.
FREQUENCY RESPONSE CURVE
dB (Normalized to 1Khz)
Typical Free Field Response
Normalized to 1 kHz
CLK=2.4MHz VDD=1.8V
20
18
16
14
12
10
8
6
4
2
0
-2
-4
-6
-8
-10
-12
-14
-16
-18
-20
100
1,000
10,000
Frequency (Hz)
Revision: B
Sheet 6 of 15
04/06/2015
© 2014 Knowles Electronics
SPH0641LU4H-1
5.
ULTRASONIC RESPONSE CURVE
dB (Normalized to 1Khz)
Typical Ultrasonic Response
Normalized to 1KHz
CLK=3.072MHz VDD=1.8V
20
18
16
14
12
10
8
6
4
2
0
-2
-4
-6
-8
-10
-12
-14
-16
-18
-20
10,000
20,000
30,000
40,000
50,000
60,000
70,000
80,000
Frequency (Hz)
Revision: B
Sheet 7 of 15
04/06/2015
© 2014 Knowles Electronics
SPH0641LU4H-1
6.
INTERFACE CIRCUIT
VDD
VDD
.1f
.1f
SELECT
SELECT
Mic
(High)
Mic
(Low)
DATA CLOCK
Microphone
SELECT
Asserts DATA On
Latch DATA On
Mic (High)
VDD
Rising Clock Edge
Falling Clock Edge
Mic (Low)
GND
Falling Clock Edge
Rising Clock Edge
Note: Bypass capacitors near each Mic VDD PIN are recommented to provide maximum SNR
performance. Capacitors near the microphone should not contain Class 2 dielectrics.
Detailed information on acoustic, mechanical, and system integration can be found in
the latest SiSonicTM Design Guide application note.
7.
TIMING DIAGRAM
1/FCLOCK
VIH
CLOCK
tEDGE
tEDGE
VIL
tDV
DATA
(SELECT = VDD)
tDD
tDZ
VOH
Mic (High)
Data
VOL
tHOLD
tDV
DATA
(SELECT = GND)
Revision: B
Sheet 8 of 15
High Z
tDD
High Z
tDZ
VOH
Mic (Low)
Data
VOL
tHOLD
04/06/2015
© 2014 Knowles Electronics
SPH0641LU4H-1
8.
MECHANICAL SPECIFICATIONS
Item
Dimension
Tolerance
Length (L)
3.50
±0.10
Width (W)
2.65
±0.10
Height (H)
0.98
±0.10
Ø 0.325
±0.05
Acoustic Port (AP)
Pin #
Pin Name
Type
Description
1
DATA
Digital O
PDM Output
2
SELECT
Digital I
Lo/Hi (L/R) Select
This pin is internally pulled low
but should not be left floating.
3
GROUND
Power
Ground
4
CLOCK
Digital I
Clock Input
5
VDD
Power
Power Supply
Notes: Pick Area only extends to 0.25 mm of any edge or hole unless otherwise specified.
Dimensions are in millimeters unless otherwise specified.
Tolerance is ±0.15mm unless otherwise specified
Revision: B
Sheet 9 of 15
04/06/2015
© 2014 Knowles Electronics
SPH0641LU4H-1
9.
EXAMPLE LAND PATTERN
10. EXAMPLE SOLDER STENCIL PATTERN
Notes: Dimensions are in millimeters unless otherwise specified.
Detailed information on AP size considerations can be found in the latest SiSonicTM
Design Guide application note.
Further optimizations based on application should be performed.
Revision: B
Sheet 10 of 15
04/06/2015
© 2014 Knowles Electronics
SPH0641LU4H-1
11. PACKAGING & MARKING DETAIL
Model Number
Suffix
Reel Diameter
Quantity Per Reel
SPH0641LU4H-1
-8
13”
5,900
Alpha Character A:
“S”: Knowles SiSonicTM Production
“E”: Knowles Engineering Samples
“P”: Knowles Prototype Samples
“JIN NUMBER”:
Unique Job Identification Number
for product traceability
Pin 1
Notes: Dimensions are in millimeters unless otherwise specified.
Vacuum pickup only in the pick area indicated in Mechanical Specifications.
Tape & reel per EIA-481.
Labels applied directly to reel and external package.
Shelf life: Twelve (12) months when devices are to be stored in factory supplied,
unopened ESD moisture sensitive bag under maximum environmental conditions of
30°C, 70% R.H.
Revision: B
Sheet 11 of 15
04/06/2015
© 2014 Knowles Electronics
SPH0641LU4H-1
12. RECOMMENDED REFLOW PROFILE
tP
TP
Ramp-up
Temperature
TL
tL
TSMAX
TSMIN
tS Preheat
Ramp-down
25°C
Time
Time 25°C to Peak
Profile Feature
Average Ramp-up rate (TSMAX to TP)
Preheat
Temperature Min (TSMIN)
Temperature Max (TSMAX)
Time (TSMIN to TSMAX) (tS)
Time maintained above:
Temperature (TL)
Time (tL)
Peak Temperature (TP)
Time within 5°C of actual Peak Temperature (tP)
Ramp-down rate (TP to TSMAX)
Time 25°C to Peak Temperature
Pb-Free
3°C/second max.
150°C
200°C
60-180 seconds
217°C
60-150 seconds
260°C
20-40 seconds
6°C/second max
8 minutes max
Notes: Based on IPC/JDEC J-STD-020 Revision C.
All temperatures refer to topside of the package, measured on the package body
surface.
Revision: B
Sheet 12 of 15
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© 2014 Knowles Electronics
SPH0641LU4H-1
13. ADDITIONAL NOTES
(A) MSL (moisture sensitivity level) Class 1.
(B) Maximum of 3 reflow cycles is recommended.
(C) In order to minimize device damage:
Do not board wash or clean after the reflow process.
Do not brush board with or without solvents after the reflow process.
Do not directly expose to ultrasonic processing, welding, or cleaning.
Do not insert any object in port hole of device at any time.
Do not apply over 30 psi of air pressure into the port hole.
Do not pull a vacuum over port hole of the microphone.
Do not apply a vacuum when repacking into sealed bags at a rate faster than 0.5 atm/sec.
14. MATERIALS STATEMENT
Meets the requirements of the European RoHS directive 2011/65/EC as amended.
Meets the requirements of the industry standard IEC 61249-2-21:2003 for halogenated
substances and Knowles Green Materials Standards Policy section on Halogen-Free.
Ozone depleting substances are not used in the product or the processes used to make the
product, including compounds listed in Annex A, B, and C of the “Montreal Protocol on
Substances That Deplete the Ozone Layer.”
Revision: B
Sheet 13 of 15
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© 2014 Knowles Electronics
SPH0641LU4H-1
15. RELIABILITY SPECIFICATIONS
Test
Description
Thermal Shock
100 cycles air-to-air thermal shock from -40oC to +125oC with 15
minute soaks. (IEC 68-2-4)
High Temperature Storage
1,000 hours at +105oC environment (IEC 68-2-2 Test Ba)
Low Temperature Storage
1,000 hours at -40oC environment (IEC 68-2-2 Test Aa)
High Temperature Bias
1,000 hours at +105oC under bias (IEC 68-2-2 Test Ba)
Low Temperature Bias
1,000 hours at -40oC under bias (IEC 68-2-2 Test Aa)
Temperature / Humidity Bias
1,000 hours at +85oC/85% R.H. under bias. (JESD22-A101A-B)
Vibration
ESD-LID/GND
ESD-MM
4 cycles of 20 to 2,000 Hz sinusoidal sweep with 20 G peak
acceleration lasting 12 minutes in X, Y, and Z directions.
(Mil-Std-883E, method 2007.2 A)
3 discharges of ±8 kV direct contact to lid while unit is grounded.
(IEC 61000-4-2)
3 discharges of ±200V direct contact to I/O pins.
(ESD STM5.2)
Reflow
5 reflow cycles with peak temperature of +260oC
Mechanical Shock
3 pulses of 10,000 G in the X, Y, and Z direction (IEC 68-2-27, Test Ea)
Note: After reliability tests are performed, the sensitivity of the microphones shall not deviate
more than 3 dB from its initial value.
After 3 reflow cycles, the sensitivity of the microphones shall not deviate more than 1 dB
from its initial value.
Revision: B
Sheet 14 of 15
04/06/2015
© 2014 Knowles Electronics
SPH0641LU4H-1
16. SPECIFICATION REVISIONS
Revision
Specification Changes
Date
A
Initial Release(C10115945)
5/16/14
B
Updated State Diagram(DCN 15-180)
4/06/15
Information contained herein is subject to change without notice. It may be used by a party at their own discretion
and risk. We do not guarantee any results or assume any liability in connection with its use. This publication is not
to be taken as a license to operate under any existing patents.
Revision: B
Sheet 15 of 15
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© 2014 Knowles Electronics
