Datasheet

LMV1089
www.ti.com SNAS441H –SEPTEMBER 2008–REVISED MAY 2010
ELECTRICAL CHARACTERISTICS 3.3V
(1)
(continued)
Unless otherwise specified, all limits specified for T
J
= 25°C, V
DD
= 3.3V, V
IN
= 18mV
P-P
, f = 1kHz, EN = V
DD
, pass through
mode
(2)
, Pre Amp gain = 20dB, Post Amp gain = 6dB, R
L
= 100kΩ, and C
L
= 4.7pF, C
REF
= 10nF
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 60 dB
1.85 V (min)
V
BM
Microphone Bias Supply Voltage I
BIAS
= 1mA 2.0
2.15 V (max)
e
VBM
Microphone Bias Noise Level A-Weighted, 10nF cap at V
REF
pin 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)
V
IN
= 25mV
P-P
both inputs, Noise
I
DD
Supply Current 1.1 mA
cancelling mode
I
SD
Shut Down Current EN pin = GND 0.7 1 μA (max)
Supply Current during Calibration and
I
DDCP
Calibrating or Programming EEPROM 30 45 mA (max)
Programming
I
DD
I
2
C I
2
C supply current I
2
C Idle Mode 25 100 nA (max)
T
ON
Turn On Time 40 ms (max)
T
OFF
Turn Off Time 60 ms (max)
ELECTRICAL CHARACTERISTICS 5.0V
(1)
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 = 1kHz, V
IN
= 18mV
P-P
63 dB
SNR Signal-to-Noise Ratio
f = 1kHz, V
IN
= 18mV
P-P
, A-Weighted
65 dB
voice band (300 – 3400Hz)
e
N
Input Referred Noise level A-weighted 5 μV
RMS
V
IN
Maximum Input Signal f = 1kHz, THD+N < 1% 918 850 mV
P-P
(min)
f = 1kHz, THD+N < 1%
Maximum AC Output Voltage 1.2 1.1 V
RMS
(min)
between differential output
V
OUT
DC Output Voltage 800 mV
THD+N Total Harmonic Distortion + Noise f = 1kHz V
IN
= 18mV
P-P
0.1 0.2 % (max)
Z
IN
Input Impedance 142 kΩ
Z
OUT
Output Impedance 300 Ω
A
M
Microphone Preamplifier Gain Range f = 1kHz 6 – 36 dB
Microphone Preamplifier Gain 1.7 dB (min)
A
MR
f = 1kHz 2
Adjustment Resolution 2.3 dB (max)
f = 1kHz Pass Through Mode and
A
P
Post Amplifier Gain Range 6 – 18 dB
Summing Mode
Post Amplifier Gain Adjustment 2.6 dB (min)
A
PR
f = 1kHz 3
Resolution 3.4 dB (max)
A
CR
Gain Compensation Range f = 1kHz ±3 dB
(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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