Omnidirectional Microphone. ADMP401 Datasheet

ADMP401 Microphone. Datasheet pdf. Equivalent

ADMP401 Datasheet
Recommendation ADMP401 Datasheet
Part ADMP401
Description Omnidirectional Microphone
Feature ADMP401; Data Sheet Omnidirectional Microphone with Bottom Port and Analog Output ADMP401 FEATURES FUNCTIO.
Manufacture Analog Devices
Datasheet
Download ADMP401 Datasheet




Analog Devices ADMP401
Data Sheet
Omnidirectional Microphone with
Bottom Port and Analog Output
ADMP401
FEATURES
FUNCTIONAL BLOCK DIAGRAM
4.72 mm × 3.76 mm × 1.0 mm surface-mount package
High SNR of 62 dBA
Sensitivity of −42 dBV
Flat frequency response from 100 Hz to 15 kHz
OUTPUT
AMPLIFIER
OUTPUT
Low current consumption of <250 μA
Single-ended analog output
High PSR of 70 dB
Compatible with Sn/Pb and Pb-free solder processes
RoHS/WEEE compliant
E APPLICATIONS
Smartphones and feature phones
Teleconferencing systems
T Digital video cameras
Bluetooth headsets
Video phones
E Tablets
GENERAL DESCRIPTION
L The ADMP4011 is a high quality, high performance, low power,
analog output, bottom-ported omnidirectional MEMS
microphone. The ADMP401 consists of a MEMS microphone
element, an impedance converter, and an output amplifier. The
O ADMP401 sensitivity specification makes it an excellent choice
for both near field and far field applications. The ADMP401 has
a high SNR and flat wideband frequency response, resulting in
OBS natural sound with high intelligibility. Low current consumption
ADMP401
POWER
VDD GND
Figure 1.
enables long battery life for portable applications. The ADMP401
complies with the TIA-920 standard, Telecommunications
Telephone Terminal Equipment Transmission Requirements for
Wideband Digital Wireline Telephones.
The ADMP401 is available in a thin, 4.72 mm × 3.76 mm ×
1.0 mm surface-mount package. It is reflow solder compatible
with no sensitivity degradation. The ADMP401 is halide free.
1 Protected by U.S. Patents 7,449,356; 7,825,484; 7,885,423; 7,961,897. Other patents are pending.
Rev. E
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or 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.
Trademarks and registered trademarks are the property of their respective owners.
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 ©2010–2012 Analog Devices, Inc. All rights reserved.



Analog Devices ADMP401
ADMP401
Data Sheet
TABLE OF CONTENTS
Features .............................................................................................. 1
Connecting the ADMP401 to a Codec ......................................8
Applications....................................................................................... 1
Connecting the ADMP401 to an Op Amp Gain Stage ............8
Functional Block Diagram .............................................................. 1
Supporting Documents ................................................................8
General Description ......................................................................... 1
Handling Instructions.......................................................................9
Revision History ............................................................................... 2
Pick-and-Place Equipment ..........................................................9
Specifications..................................................................................... 3
Reflow Solder .................................................................................9
Absolute Maximum Ratings............................................................ 4
Board Wash ....................................................................................9
ESD Caution.................................................................................. 4
Pin Configuration and Function Descriptions............................. 5
Printed Circuit Board (PCB) Land Pattern Layout...................... 6
Typical Performance Characteristics ............................................. 7
E Applications Information ................................................................ 8
T REVISION HISTORY
7/12—Rev. D to Rev. E
Changes to Features Section, General Description Section, and
Page 1 Layout .................................................................................... 1
E Add Note 1......................................................................................... 1
Changes to Frequency Response Parameter, Table 1 and Powers
Supply Rejection Parameter, Table 1 .............................................. 3
L Changes to Temperature Range Parameter, Table 2..................... 4
Changes to Figure 6, Figure 7, and Figure 8.................................. 7
Changes to Applications Information Section and Figure 10..... 8
Added Supporting Documents Section, Application Notes
O Section, Circuit Notes Section, and Evaluation Board User
Guides Section .................................................................................. 8
Changes to THB Description Column, Table 5 and Temperature
Cycle Column, Table 5 ................................................................... 10
S Changes to Ordering Guide .......................................................... 11
1/12—Rev. C to Rev. D
Updated Outline Dimensions ....................................................... 11
B Changes to Figure 12...................................................................... 11
Added Figure 13.............................................................................. 11
O Change to Ordering Guide............................................................ 11
Reliability Specifications................................................................ 10
Outline Dimensions ....................................................................... 11
Ordering Guide .......................................................................... 11
8/11—Rev. B to Rev. C
Changes to Figure 1...........................................................................1
Changes to Table 3.............................................................................4
Removed Terminal Side Down from Figure 3...............................5
Changes to Bullet 2 in Pick-and-Place Equipment Section.........9
Changes to Ordering Guide .......................................................... 11
12/10—Rev. A to Rev. B
Changes to Applications and General Description Sections .......1
Changes to Table 1.............................................................................3
8/10—Rev. 0 to Rev. A
Changes to Frequency Response Parameter, Table 1....................3
Changes to Supply Voltage Parameter, Table 2..............................4
Changes to Applications Information Section, Figure 9, and
Figure 10 .............................................................................................8
Updated Outline Dimensions ....................................................... 11
4/10—Revision 0: Initial Version
Rev. E | Page 2 of 12



Analog Devices ADMP401
Data Sheet
ADMP401
SPECIFICATIONS
TA = 25°C, VDD = 1.8 V, unless otherwise noted. All minimum and maximum specifications are guaranteed. Typical specifications are not
guaranteed.
Table 1.
Parameter
Symbol Test Conditions/Comments
Min Typ Max
PERFORMANCE
Directionality
Omni
Sensitivity
1 kHz, 94 dB SPL
−45 −42 −39
Signal-to-Noise Ratio
SNR
62
Equivalent Input Noise
EIN
Dynamic Range
Frequency Response1
E Total Harmonic Distortion THD
Power Supply Rejection
PSR
Maximum Acoustic Input
POWER SUPPLY
T Supply Voltage
VDD
Supply Current
IS
OUTPUT CHARACTERISTICS
E Output Impedance
ZOUT
Output DC Offset
Output Current Limit
OBSOL 1 See Figure 6 and Figure 7.
Derived from EIN and maximum acoustic input
Low frequency, −3 dB point
High frequency, −3 dB point
Deviation limits from flat response within pass band
105 dB SPL
217 Hz, 100 mV p-p square wave superimposed on VDD = 1.8 V
Peak
32
88
60
15
−3/+2
70
120
1.5
200
0.8
90
3
3.3
250
Unit
dBV
dBA
dBA SPL
dB
Hz
kHz
dB
%
dB
dB SPL
V
µA
Ω
V
µA
Rev. E | Page 3 of 12







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