SPW0442HR5H-1
SPW0442HR5H-1 Rev E
Datasheet
Precision Top Port
TM
SiSonic Microphone
The SPW0442HR5H-1 is a miniature, high-performance, low power, top port silicon microphone.
Using Knowles’ proven high-performance SiSonic
TM
MEMS technology, the SPW0442HR5H-1
consists of an acoustic sensor, a low noise input buffer, and an output amplifier. 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.
Product Features
•
•
•
•
Matched Sensitivity
Small Package
Low Current
MaxRF Protection
•
•
•
•
Top Ported Design
Ultra-Stable Performance
Standard SMD Reflow
Omnidirectional
Typical Applications
•
Portable electronics
•
Cellphones
•
Laptop Computers
•
Tablets
•
Digital Still Cameras
•
Portable Music Recorders
knowles.com
Datasheet SPW0442HR5H-1 Rev E
© Copyright 2017 Knowles
1
Absolute Maximum Ratings
Table 1: Absolute Maximum Ratings
Parameter
Absolute Maximum Rating
Vdd to Ground
OUTPUT to Ground
Input Current to any pin
Temperature
-0.5, +5.0
-0.3, Vdd+0.3
±5
-40 to +100
Units
V
V
mA
ºC
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.
Acoustic & Electrical Specifications
Table 2: Normal Mode Microphone Specifications
Test Conditions: 23 ±2°C, 55±20% R.H., Vdd(min) < Vdd < Vdd(max), no load, unless otherwise indicated
Parameter
Symbol
Conditions
Min
Typ
Supply Voltage
Supply Current
Supply Current
1
1
Max
3.6
165
185
-41
-
0.25
-
-
-
-
500
Units
V
µA
µA
dBV/Pa
dB(A)
%
dB SPL
dB
dBV(A)
V
Ω
Vdd
Idd
Idd
S
SNR
THD
AOP
PSRR
PSR
Zout
Vdd = 1.8V
Vdd = 3.6V
94 dB SPL @ 1 kHz
94 dB SPL @ 1 kHz, A-weighted
94 dB SPL @ 1 kHz,
S = Typ, Rload > 3kΩ
10% THD @ 1 kHz,
S = Typ, Vdd = 3.6V, Rload > 3kΩ
200 mVpp sine wave 50-20kHz
@1kHz, Vdd = 1.8V
100 mVpp square wave
Vdd = 1.5V
@ 1 kHz
Increasing sound pressure
1.5
-
-
-43
-
-
128
-
-
-
-
-
130
150
-42
59
0.15
130
66
-100
1.3
-
Sensitivity
Signal to Noise Ratio
Total Harmonic
Distortion
Acoustic Overload Point
Power Supply Rejection
Ratio
Power Supply Rejection
DC Output
Output Impedance
Directivity
1
Omnidirectional
Decreasing output voltage
Polarity
100% tested.
Application Notes
V
DD
V
DD
OUTPUT
R
S
.1µf
R
F
Notes:
All Ground pins must be connected to ground.
Capacitors near the microphone should not contain
Class 2 dielectrics due to their piezoelectric effects.
GROUND
Dashed Section Represents
SiSonic
TM
Microphone
Figure 1: Typical Application Circuit
V
REF
External Gain = -R
F
/R
S
(Set By User)
Detailed information on acoustic, mechanical, and
system integration can be found in the latest
TM
SiSonic Design Guide
application note.
knowles.com
Datasheet SPW0442HR5H-1 Rev E
© Copyright 2017 Knowles
2
Performance Curves
Test Conditions: Vdd=1.8V, no load, unless otherwise indicated
20
15
Sensitivity (dB)
10
5
0
-5
-10
0.01
THD (%)
10
1
0.1
10
100
1,000
Frequency (Hz)
10,000
95
100
105
110
115
120
125
130
135
Figure 2: Typical Free Field Response Normalized to 1 kHz
SPL (dB)
Figure 4: Typical THD vs SPL
100
95
90
85
PSRR (dB)
Idd (µA)
10
100
1,000
Frequency [Hz]
10,000
80
75
70
65
60
55
50
200
180
160
140
120
100
80
60
40
20
0
1.5
1.8
2.1
2.4
2.7
3
3.3
3.6
Figure 3: Typical PSRR
Vdd (V)
Figure 5: Typical Idd vs Vdd
knowles.com
Datasheet SPW0442HR5H-1 Rev E
© Copyright 2017 Knowles
3
Mechanical Specifications
Item
Length (L)
Width (W)
Height (H)
Acoustic Port (AP)
PCB Thickness (T)
Dimension
3.10
2.50
1.00
Ø0.45
0.28
Tolerance
±0.10
±0.10
±0.10
±0.05
+0.05
-0.03
Description
Output Signal
Ground
Ground
Power Supply
Pin #
1
2
3
4
Pin Name
OUTPUT
GROUND
GROUND
Vdd
Type
Signal
Power
Power
Power
Example Land Pattern
Example Solder Stencil Pattern
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
Detailed information on AP size considerations can be found in the latest
SiSonic
TM
Design Guide
application note.
Further optimizations based on application should be performed.
knowles.com
Datasheet SPW0442HR5H-1 Rev E
© Copyright 2017 Knowles
4
Packaging & Marking Detail
Model Number
SPW0442HR5H-1
Suffix
-7
Reel Diameter
13”
Quantity Per Reel
5,700
Alpha Character A:
“S”: Knowles SiSonic™ 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 Rev C.
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.
knowles.com
Datasheet SPW0442HR5H-1 Rev E
© Copyright 2017 Knowles
5
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