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ADMP405 데이터시트 PDF




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부품번호 ADMP405 기능
기능 Omnidirectional Microphone
제조업체 Analog Devices
로고 Analog Devices 로고


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ADMP405 데이터시트, 핀배열, 회로
Preliminary Technical Data
Omnidirectional Microphone withwww.DataSheet4U.com
Bottom Port and Analog Output
ADMP405
FEATURES
Tiny 3.35 mm × 2.50 mm × 0.88 mm surface-mount package
High SNR of 62 dBA
High sensitivity of −38 dBV
Flat frequency response from 200 Hz to 15 kHz
Low current consumption: <250 µA
Single-ended analog output
High PSRR of 70 dB
Compatible with Sn/Pb and Pb-free solder processes
RoHS/WEEE compliant
APPLICATIONS
Smartphones and feature phones
Digital video cameras
Bluetooth headsets
Video phones
Teleconferencing systems
GENERAL DESCRIPTION
The ADMP405 is a high quality, low cost, low power, analog
output bottom-ported omnidirectional MEMS microphone.
The ADMP405 consists of a MEMS microphone element, an
impedance converter, and an output amplifier. The ADMP405
sensitivity specification makes it an excellent choice for both
near field and far field applications. The ADMP405 has a high
SNR and flat, wideband frequency response, resulting in natural
sound with high intelligibility. The specially designed low-
frequency cutoff reduces wind noise. Low current consumption
enables long battery life for portable applications. A built-in
particle filter provides high reliability. The ADMP405 complies
with the TIA-920 Telecommunications Telephone Terminal
Equipment Transmission Requirements for Wideband Digital
Wireline Telephones standard.
The ADMP405 is available in an ultraminiature 3.35 mm ×
2.50 mm × 0.88 mm surface-mount package. It is reflow solder
compatible with no sensitivity degradation. The ADMP405 is
halide free.
FUNCTIONAL BLOCK DIAGRAM
ASIC
MEMS
MEMBRANE
BACKPLATE
ADMP405
IMPEDANCE
CONVERTER
OUTPUT AMPLIFIER
VDD
OUTPUT
GND
Figure 1.
Rev. PrH
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevices for itsuse,nor foranyinfringementsofpatentsor other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2010 Analog Devices, Inc. All rights reserved.




ADMP405 pdf, 반도체, 판매, 대치품
ADMP405
ABSOLUTE MAXIMUM RATINGS
Table 2.
Parameter
Supply Voltage
Sound Pressure Level (SPL)
Mechanical Shock
Vibration
Temperature Range
Rating
3.6 V
160 dB
10,000 g
Per MIL-STD-883 Method 2007,
Test Condition B
−40°C to +70°C
Preliminary Technical Datawww.DataSheet4U.com
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
ESD CAUTION
TP
TL TSMAX
TSMIN
RAMP-UP
tP
CRITICAL ZONE
TL TO TP
tL
tS
PREHEAT
RAMP-DOWN
t25°C TO PEAK
TIME
Figure 2. Recommended Soldering Profile Limits
Table 3. Recommended Soldering Profile Limits
Profile Feature
Average Ramp Rate (TL to TP)
Preheat
Minimum Temperature (TSMIN)
Maximum Temperature (TSMAX)
Time (TSMIN to TSMAX), tS
Ramp-Up Rate (TSMAX to TL)
Time Maintained Above Liquidous (tL)
Liquidous Temperature (TL)
Peak Temperature (TP)
Time Within 5°C of Actual Peak Temperature (tP)
Ramp-Down Rate
Time 25°C (t25°C) to Peak Temperature
Sn63/Pb37
3°C/sec max
100°C
150°C
60 sec to 120 sec
3°C/sec
60 sec to 150 sec
183°C
240°C + 0°C/−5°C
10 sec to 30 sec
6°C/sec max
6 minute max
Pb-Free
3°C/sec max
150°C
200°C
60 sec to 120 sec
3°C/sec
60 sec to 150 sec
217°C
260°C + 0°C/−5°C
20 sec to 40 sec
6°C/sec max
8 minute max
Rev. PrH | Page 4 of 12

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ADMP405 전자부품, 판매, 대치품
Preliminary Technical Data
APPLICATIONS INFORMATION
The ADMP405 output can be connected to a dedicated codec
microphone input (see Figure 7) or to a high input impedance
gain stage (see Figure 8). A 0.1 µF ceramic capacitor (C1) at VDD
placed close to the ADMP405 supply pins is used for testing and
is recommended to adequately decouple the microphone from
noise on the power supply. A 1 µF or larger dc-blocking tantalum
capacitor (C2) is required at the output of the microphone.
CONNECTING THE ADMP405 TO A CODEC
GND
C1
0.1µF
VDD
OUTPUT
C2
1µF
ADAU1761
ADMP404
MIC INPUT
GND
GND
Figure 7. ADMP405 Connected to the Analog Devices ADAU1761 Codec
ADMP405www.DataSheet4U.com
CONNECTING THE ADMP405 TO AN OP AMP GAIN
STAGE
GND
C1
0.1µF
VDD
OUTPUT
ADMP404
C2
1µF
R1
10k
37
U1
2 OP177
4
6
GND
GAIN = (R2 + R3)/R3
R3
R2
GND
Figure 8. ADMP405 Connected to the OP177 Op Amp
Rev. PrH | Page 7 of 12

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