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INMP521ACEZ-R7

MIC MEMS DIGITAL OMNI -26DB

器件类别：模块/解决方案   

厂商名称：TDK(株式会社)

厂商官网：http://www.tdk.com

器件标准：

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器件参数
参数名称
属性值
类型
MEMS（硅）
输出类型
数字，PDM
方向
全向
频率范围
100Hz ~ 16kHz
灵敏度
-26dB ±3dB @ 94dB SPL
信噪比
65dB
电压范围
1.62V ~ 3.63V
电流 - 电源
1.2mA
端口位置
底部
端接
焊盘
大小/尺寸
0.157" 长 x 0.118" 宽（4.00mm x 3.00mm）
高度（最大值）
0.043"（1.10mm）
形状
矩形
文档预览
Ultra-Low Noise Microphone with Bottom Port and PDM Digital Output
GENERAL DESCRIPTION
The INMP521* is a high performance, ultra-low noise, low
power, digital output, bottom-ported omnidirectional MEMS
microphone. The INMP521 consists of a MEMS microphone
element and an impedance converter amplifier followed by a
fourth-order sigma-delta
(Σ-Δ) modulator. The digital
interface allows for the pulse density modulated (PDM)
output of two microphones to be time-multiplexed on a
single data line using a single clock. The INMP521 is function
and pin compatible with the INMP421 microphone, providing
an easy upgrade path.
The INMP521 has a very high signal-to-noise ratio (SNR) and
common sensitivity of −26 dBFS, making it an excellent
choice
for far field applications. The INMP521 has an extended wide-
band frequency response resulting in natural sound with high
intelligibility. Low current consumption and a sleep mode
with less than 1 µA current consumption enables long battery
life for portable applications. The INMP521 complies with the
TIA-920 Tele-communications Telephone Terminal Equipment
Transmission Requirements for Wideband Digital Wireline
Telephones
standard.
The INMP521 is available in a thin 4 mm × 3 mm × 1 mm
surface-mount package. It is reflow solder compatible with
no sensitivity degradation. The INMP521 is halide free.
*Protected by U.S. Patents 7,449,356; 7,825,484; 7,885,423; and 7,961,897.
Other patents are pending.
INMP521
APPLICATIONS
•
•
•
•
•
•
•
•
Smartphones and Feature Phones
Microphone Arrays
Tablet Computers
Teleconferencing Systems
Digital Still and Video Cameras
Bluetooth Headsets
Notebook PCs
Security and Surveillance
FEATURES
•
•
•
•
•
•
•
•
•
•
•
•
•
Small, Thin 4 × 3 × 1 mm Surface-Mount Package
Omnidirectional Response
Very High
SNR of 65 dBA
Sensitivity of −26 dBFS
Wide
Frequency
Response from 100 Hz to
16
kHz
Low Current Consumption of 900 µA
Sleep Mode for Extended Battery Life, <1 µA
120 dB Maximum SPL
High PSR of −80 dBFS
Fourth-Order Σ-Δ Modulator
Digital PDM Output
Sn/Pb and Pb-Free
Solder
Processes
RoHS/WEEE Compliant
FUNCTIONAL BLOCK DIAGRAM
INMP521
ADC
PDM
MODULATOR
CLK
DATA
ORDERING INFORMATION
PART
INMP521ACEZ-R0*
INMP521ACEZ-R7†
EV_INMP521
EV_INMP521-FX
TEMP RANGE
−40°C to +85°C
−40°C to +85°C
—
—
POWER
MANAGEMENT
CHANNEL
SELECT
* – 13” Tape and Reel
† – 7” Tape and reel to be discontinued. Contact
sales@invensense.com
for
availability.
L/R SELECT
GND
VDD
BOTTOM
TOP
InvenSense reserves the right to change the detail
specifications as may be required to permit improvements
in the design of its products.
InvenSense Inc.
1745 Technology Drive, San Jose, CA 95110 U.S.A
+1(408) 988–7339
www.invensense.com
Document Number: DS-INMP521-00
Revision: 1.1
Rev Date: 05/21/2014
INMP521
TABLE OF CONTENTS
General Description ................................................................................................................................................. 1
Applications ............................................................................................................................................................. 1
Features
................................................................................................................................................................... 1
Functional Block Diagram
........................................................................................................................................ 1
Ordering Information ............................................................................................................................................... 1
Table of Contents ............................................................................................................................................................ 2
Specifications .................................................................................................................................................................. 4
Table 1. Electrical Characteristics ............................................................................................................................ 4
Table 2. Timing Characteristics ................................................................................................................................ 5
Timing Diagram ........................................................................................................................................................ 5
Absolute Maximum Ratings ............................................................................................................................................
6
Table 3. Absolute Maximum Ratings .......................................................................................................................
6
ESD Caution .............................................................................................................................................................
6
Soldering Profile....................................................................................................................................................... 7
Table 4. Recommended Soldering Profile*.............................................................................................................. 7
Pin Configurations And Function Descriptions
............................................................................................................... 8
Table 5.
Pin Function Descriptions
........................................................................................................................... 8
Typical Performance Characteristics............................................................................................................................... 9
Theory Of Operation ..................................................................................................................................................... 10
PDM Data Format
.................................................................................................................................................. 10
Table 6. INMP521 Channel Setting
........................................................................................................................ 10
PDM Microphone Sensitivity ................................................................................................................................. 11
Connecting PDM Microphones .............................................................................................................................. 12
Sleep Mode ............................................................................................................................................................ 14
Start-Up Time ......................................................................................................................................................... 14
Supporting Documents ................................................................................................................................................. 15
Evaluation Board User Guide ................................................................................................................................. 15
application Note (product specific) ....................................................................................................................... 15
Application Notes (general) ................................................................................................................................... 15
PCB Design And Land Pattern Layout ...........................................................................................................................
16
Alternative PCB Land Patterns ............................................................................................................................... 17
PCB Material And Thickness .................................................................................................................................. 17
Handling Instructions .................................................................................................................................................... 18
Pick And Place Equipment ..................................................................................................................................... 18
Reflow Solder ......................................................................................................................................................... 18
Board Wash............................................................................................................................................................ 18
Outline Dimensions ....................................................................................................................................................... 19
Document Number: DS-INMP521-00
Revision: 1.1
Page 2 of 21
INMP521
Ordering Guide ...................................................................................................................................................... 20
Revision History ..................................................................................................................................................... 20
Compliance Declaration Disclaimer ....................................................................................................................... 21
Document Number: DS-INMP521-00
Revision: 1.1
Page 3 of 21
INMP521
SPECIFICATIONS
TABLE 1. ELECTRICAL CHARACTERISTICS
(T
A
= −40 to 85°C, V
DD
= 1.8 to 3.3 V, CLK = 2.4 MHz, C
LOAD
= 30 pF, unless otherwise noted. All minimum and maximum specifications
are guaranteed across temperature, voltage, and clock frequency specified in Table 1, unless otherwise noted. Typical specifications
are not guaranteed.)
PARAMETER
PERFORMANCE
Directionality
Sensitivity
Signal-to-Noise Ratio (SNR)
Equivalent Input Noise (EIN)
Dynamic Range
Frequency Response
Total Harmonic Distortion (THD)
Power-Supply Rejection (PSR)
Maximum Acoustic Input
POWER SUPPLY
Supply Voltage (V
DD
)
Supply Current (I
S
)
CONDITIONS
MIN
TYP
Omni
−26
65
29
91
100
16
2.5
−80
120
1.62
0.9
3.63
1.0
0.5
1.0
1.2
0.8
0.65 x
V
DD
0.7 x
V
DD
MAX
UNITS
NOTES
1 kHz, 94 dB SPL
20 Hz to 20 kHz, A-weighted
20 Hz to 20 kHz, A-weighted
Derived from EIN and
maximum acoustic input
Low frequency
−3
dB point
High frequency
−3
dB point
105 dB SPL
217 Hz, 100 mVp-p square
wave superimposed on V
DD
=
1.8 V
Peak
−29
−23
dBFS
dBA
dBA SPL
dB
Hz
kHz
%
dBFS
dB SPL
V
mA
µA
mA
µA
V
1
2
Normal
Mode
V
DD
= 1.8 V
Sleep Mode
Normal
Mode
V
DD
= 3.3 V
Sleep Mode
DIGITAL INPUT/OUTPUT CHARACTERISTICS
Input Voltage High (V
IH
)
Input Voltage Low (V
IL
)
Output Voltage High (V
OH
)
Output Voltage Low (V
OH
)
Output DC Offset
Latency
Noise Floor
I
LOAD
= 0.5 mA
I
LOAD
= 0.5 mA
Percent of full scale
20 Hz to 20 kHz, A-weighted
3
3
0.35 x
V
DD
V
DD
0
5
<30
−91
0.3 x
V
DD
V
V
V
%
µs
dBFS
Note 1:
Relative to the RMS level of sine wave with positive amplitude equal to 100% logical 1s density and negative amplitude equal to 0% logical 1s density.
Note 2:
See
Figure 4
and
Figure 5.
Note 3:
The microphone enters sleep mode when the clock frequency is less than 1 kHz.
Document Number: DS-INMP521-00
Revision: 1.1
Page 4 of 21
INMP521
TABLE 2. TIMING CHARACTERISTICS
T
A
=
−40 to 85°C, V
DD
= 1.8 to 3.3 V, CLK = 2.4 MHz, C
LOAD
= 30 pF, unless otherwise noted. All minimum and maximum specifications
are guaranteed. Typical specifications are not guaranteed.
PARAMETER
SLEEP MODE
Sleep Time
Wake-Up Time
INPUT
t
CLKIN
Clock Frequency (CLK)
Clock Duty Cycle
t
RISE
t
FALL
OUTPUT
t
1OUTEN
t
1OUTDIS
t
2OUTEN
t
2OUTDIS
DATA1 (right) driven after falling clock edge
DATA1 (right) disabled after rising clock edge
DATA2 (left) driven after rising clock edge
DATA2 (left) disabled after falling clock edge
40
5
40
5
30
30
ns
ns
ns
ns
CLK rise time (10% to 90% level)
CLK fall time (90% to 10% level)
Time from CLK falling (f
CLK
< 1 kHz)
Time from CLK rising (f
CLK
> 1 kHz), power on
Input clock period
326
1.25
40
2.4
1
10
800
3.072
60
25
25
ms
ms
ns
MHz
%
ns
ns
1
2
2
1
1
CONDITIONS
MIN
TYP
MAX
UNITS
NOTES
Note 1:
The microphone operates at any clock frequency between 1.25 MHz and 3.072 MHz. Some specifications may not be guaranteed at frequencies other than
2.4 MHz.
Note 2:
Guaranteed by design.
TIMING DIAGRAM
t
CLKIN
CLK
t
RISE
t
1OUTEN
DATA1
t
FALL
t
1OUTDIS
t
2OUTDIS
DATA2
t
2OUTEN
Figure 1. Pulse Density Modulated Output Timing
Document Number: DS-INMP521-00
Revision: 1.1
Page 5 of 21
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参数对比
与INMP521ACEZ-R7相近的元器件有：。描述及对比如下：
型号 INMP521ACEZ-R7
描述 MIC MEMS DIGITAL OMNI -26DB
类型 MEMS（硅）
输出类型 数字，PDM
方向 全向
频率范围 100Hz ~ 16kHz
灵敏度 -26dB ±3dB @ 94dB SPL
信噪比 65dB
电压范围 1.62V ~ 3.63V
电流 - 电源 1.2mA
端口位置 底部
端接 焊盘
大小/尺寸 0.157" 长 x 0.118" 宽（4.00mm x 3.00mm）
高度（最大值） 0.043"（1.10mm）
形状 矩形
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