Datasheet
LMV1089
SNAS441H –SEPTEMBER 2008–REVISED MAY 2010
www.ti.com
ELECTRICAL CHARACTERISTICS 5.0V
(1)
(continued)
Unless otherwise specified, all limits specified for T
J
= 25°C, V
DD
= 5V, V
IN
= 18mV
P-P
, EN = V
DD
, pass through mode
(2)
, Pre
Amp gain = 20dB, Post Amp gain = 6dB, R
L
= 100kΩ, and C
L
= 4.7pF.
LMV1089
Units
Symbol Parameter Conditions
(Limits)
Typical
(3)
Limit
(4)
f = 300Hz 0.5 dB
Maximum Gain Matching Difference
A
MD
f = 2kHz 0.25 dB
After Calibration
f = 3kHz 0.5 dB
T
CAL
Calibration Duration 790 ms (max)
f = 1kHz (See TEST METHODS) 32 20 dBV
FFNS
E
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
SNRI
E
Electrical f = 300Hz (See TEST METHODS) 28 15 dBV
Input Referred, Input AC grounded
PSRR Power Supply Rejection Ratio f
RIPPLE
= 217Hz (V
RIPPLE
= 100mV
P-P
) 96 85 dB (min)
f
RIPPLE
= 1kHz (V
RIPPLE
= 100mV
P-P
) 91 80 dB (min)
CMRR Common Mode Rejection Ratio f = 1kHz 62 dB
V
BM
Microphone Bias Supply Voltage I
BIAS
= 1mA 2.0 V
e
VBM
Microphone Bias Noise Level A-Weighted 10 μV
RMS
I
BM
Total Available Microphone Bias Current 1.2 mA (min)
I
DDQ
Supply Quiescent Current V
IN
= 0V 1.1 1.5 mA (max)
Supply Current during Calibration and
I
DDCP
Calibrating or Programming EEPROM 30 mA (max)
Programming
V
IN
= 25mV
P-P
both inputs, Noise
I
DD
Supply Current 1.1 mA (max)
cancelling mode
I
SD
Shut Down Current EN pin = GND 1.6 μA
T
ON
Turn On Time 40 ms (max)
T
OFF
Turn Off Time 60 ms (max)
DIGITAL INTERFACE CHARACTERISTICS
(1)(2)
Unless otherwise specified, all limits specified for T
J
= 25°C, I
2
CV
DD
within the Operating Rating
(2)
LMV1089
Units
Symbol Parameter Conditions
(Limits)
Typical
(3)
Limit
(4)
EN, TM, SCL, SDA, ADR, CAL, PE 0.75xI
2
CV
DD
V
IH
Logic High Input Level V (min)
GA0, GA1, GB0, GB1 0.6xV
DD
EN, TM, SCL, SDA, ADR, CAL, PE 0.25xI
2
CV
DD
V
IL
Logic Low Input Level V (max)
GA0, GA1, GB0 0.4xV
DD
ts
CAL
CAL Setup Time 2 ms
CAL Hold time until calibration is
th
CAL
790 ms (min)
finished
ts
PEC
PE Setup Time 2 ms
th
PEC
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 I
2
CV
DD
must not exceed the voltage on V
DD
.
(3) Typical values represent most likely parametric norms at T
A
= +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.
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