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LMV1089 データシート(PDF) 8 Page - Texas Instruments

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部品番号 LMV1089
部品情報  Dual Input, Far Field Noise Suppression Microphone Amplifier with Automatic Calibration Capability
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メーカー  TI1 [Texas Instruments]
ホームページ  http://www.ti.com
Logo TI1 - Texas Instruments

LMV1089 データシート(HTML) 8 Page - Texas Instruments

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LMV1089
SNAS441H – SEPTEMBER 2008 – REVISED MAY 2010
www.ti.com
ELECTRICAL CHARACTERISTICS 5.0V
(1) (continued)
Unless otherwise specified, all limits specified for TJ = 25°C, VDD = 5V, VIN = 18mVP-P, EN = VDD, pass through mode
(2), Pre
Amp gain = 20dB, Post Amp gain = 6dB, RL = 100kΩ, and CL = 4.7pF.
LMV1089
Units
Symbol
Parameter
Conditions
(Limits)
Typical(3)
Limit(4)
f = 300Hz
0.5
dB
Maximum Gain Matching Difference
AMD
f = 2kHz
0.25
dB
After Calibration
f = 3kHz
0.5
dB
TCAL
Calibration Duration
790
ms (max)
f = 1kHz (See TEST METHODS)
32
20
dBV
FFNSE
Far Field Noise Suppression Electrical
f = 300Hz (See TEST METHODS)
37
22
dBV
Signal-to-Noise Ratio Improvement
f = 1kHz (See TEST METHODS)
24
14
dBV
SNRIE
Electrical
f = 300Hz (See TEST METHODS)
28
15
dBV
Input Referred, Input AC grounded
PSRR
Power Supply Rejection Ratio
fRIPPLE = 217Hz (VRIPPLE = 100mVP-P)
96
85
dB (min)
fRIPPLE = 1kHz (VRIPPLE = 100mVP-P)
91
80
dB (min)
CMRR
Common Mode Rejection Ratio
f = 1kHz
62
dB
VBM
Microphone Bias Supply Voltage
IBIAS = 1mA
2.0
V
eVBM
Microphone Bias Noise Level
A-Weighted
10
μVRMS
IBM
Total Available Microphone Bias Current
1.2
mA (min)
IDDQ
Supply Quiescent Current
VIN = 0V
1.1
1.5
mA (max)
Supply Current during Calibration and
IDDCP
Calibrating or Programming EEPROM
30
mA (max)
Programming
VIN = 25mVP-P both inputs, Noise
IDD
Supply Current
1.1
mA (max)
cancelling mode
ISD
Shut Down Current
EN pin = GND
1.6
μA
TON
Turn On Time
40
ms (max)
TOFF
Turn Off Time
60
ms (max)
DIGITAL INTERFACE CHARACTERISTICS
(1) (2)
Unless otherwise specified, all limits specified for TJ = 25°C, I
2CV
DD within the Operating Rating
(2)
LMV1089
Units
Symbol
Parameter
Conditions
(Limits)
Typical (3)
Limit (4)
EN, TM, SCL, SDA, ADR, CAL, PE
0.75xI2CVDD
VIH
Logic High Input Level
V (min)
GA0, GA1, GB0, GB1
0.6xVDD
EN, TM, SCL, SDA, ADR, CAL, PE
0.25xI2CVDD
VIL
Logic Low Input Level
V (max)
GA0, GA1, GB0
0.4xVDD
tsCAL
CAL Setup Time
2
ms
CAL Hold time until calibration is
thCAL
790
ms (min)
finished
tsPEC
PE Setup Time
2
ms
thPEC
PE Hold until calibration is finished
790
ms (min)
(1)
“Absolute Maximum Ratings” indicate limits beyond which damage to the device may occur, including inoperability and degradation of
device reliability and/or performance. Functional operation of the device and/or non-degradation at the Absolute Maximum Ratings or
other conditions beyond those indicated in the Recommended Operating Conditions is not implied. The Recommended Operating
Conditions indicate conditions at which the device is functional and the device should not be operated beyond such conditions. All
voltages are measured with respect to the ground pin, unless otherwise specified.
(2)
The voltage at I2CVDD must not exceed the voltage on VDD.
(3)
Typical values represent most likely parametric norms at TA = +25°C, and at the Recommended Operation Conditions at the time of
product characterization and are not specified.
(4)
Datasheet min/max specification limits are ensured by test, or statistical analysis.
8
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