Datasheet

TLV320AIC3204
www.ti.com SLOS602B –SEPTEMBER 2008–REVISED OCTOBER 2012
Electrical Characteristics, Microphone Interface
At 25°C, AV
DD
, DV
DD
, IOV
DD
= 1.8V, LDOIN = 3.3V, AV
DD
LDO disabled, f
s
(Audio) = 48kHz, C
ref
= 10µF on REF pin, PLL
disabled unless otherwise noted.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
MICROPHONE BIAS
Bias voltage Bias voltage CM = 0.9V, LDOIN = 3.3V
Micbias Mode 0, Connect to AV
DD
or LDOIN 1.25 V
Micbias Mode 1, Connect to LDOIN 1.7 V
Micbias Mode 2, Connect to LDOIN 2.5 V
Micbias Mode 3, Connect to AV
DD
AV
DD
V
Micbias Mode 3, Connect to LDOIN LDOIN V
CM = 0.75V, LDOIN = 3.3V
Micbias Mode 0, Connect to AV
DD
or LDOIN 1.04 V
Micbias Mode 1, Connect to AV
DD
or LDOIN 1.425 V
Micbias Mode 2, Connect to LDOIN 2.075 V
Micbias Mode 3, Connect to AV
DD
AV
DD
V
Micbias Mode 3, Connect to LDOIN LDOIN V
Output Noise CM = 0.9V, Micbias Mode 2, A-weighted, 10
20Hz to 20kHz bandwidth,
μV
RMS
Current load = 0mA.
Current Sourcing Micbias Mode 2, Connect to LDOIN 3 mA
Micbias Mode 3, Connect to AV
DD
140
Inline Resistance Ω
Micbias Mode 3, Connect to LDOIN 87
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