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ManualsBrandsMAXIM INTEGRATED ManualsLinear ICsMAX9880AETM+
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MAX9880A
Low-Power, High-Performance
Dual I
2
S Stereo Audio Codec
8 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(V
AVDD
= V
PVDD
= V
MICVDD
= V
DVDD
= V
DVDDS1
= +1.8V, R
L
= ∞, headphone load (R
L
) connected between _OUTP and _OUTN, dif-
ferential modes, C
REF
= 2.2µF, C
MICBIAS
= C
PREG
= C
REG
= 1µF, AV
PRE
= +20dB, AV
PGAM
= 0dB, AV
DAC
= 0dB, AV
LINE
= +20dB,
AV
VOL
= 0dB, AV
LO
= 0dB, f
MCLK
= 13MHz, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
MICROPHONE AMPLIFIER
PALEN/PAREN = 01 -0.5 0 +0.5
PALEN/PAREN = 10 19.5 20 20.5
Preamplifier Gain AV
PRE
PALEN/PAREN = 11 29.3 30 30.5
dB
PGAML/PGAMR = 0x1F -0.5 0 +0.6
MIC PGA Gain AV
PGAM
PGAML/PGAMR = 0x00 19.3 19.9 20.4
dB
Common-Mode
Rejection Ratio
CMRR V
IN
= 100mV
P-P
, f = 217Hz 50 dB
MIC Input Resistance RIN_MIC All gain settings 30 50 k
AV
PRE
= 0dB
V
IN
= 1V
P-P
, f = 1kHz, A-weighted
-80
Total Harmonic
Distortion + Noise
THD+N
AV
PRE
= +30dB
V
IN
= 32mV
P-P
, f = 1kHz, A-weighted
-65
dB
V
AVDD
= 1.65V to 1.95V, input referred 60 80
f = 217Hz, V
RIPPLE
= 100mV, AV
ADC
= 0dB, input
referred
80
f = 1kHz, V
RIPPLE
= 100mV, AV
ADC
= 0dB, input
referred
78
Power-Supply Rejection
Ratio
PSRR
f = 10kHz, V
RIPPLE
= 100mV, AV
ADC
= 0dB, input
referred
72
dB
MICROPHONE BIAS
V
MICVDD
= 1.8V, MBIAS = 0 1.48 1.52 1.56
MICBIAS Output Voltage V
MICBIAS
I
LOAD
= 1mA
V
MICVDD
= 3V, MBIAS = 0 2.15 2.2 2.25
V
Load Regulation I
LOAD
= 1mA to 2mA, MBIAS = 0 0.6 10 V/A
Line Regulation V
AVDD
= 1.8V, V
MICVDD
= 1.65V to 1.95V, MBIAS = 0 1.55 mV/V
f = 217Hz, V
RIPPLE
= 100mV
P-P
100
Power-Supply Rejection
Ratio
PSRR
f = 10kHz, V
RIPPLE
= 100mV
P-P
90
dB
Noise Voltage A-weighted 9.5 µV
RMS
LINE INPUT
Full-Scale Input V
IN
AV
LINE
= 0dB 1.0 V
P-P
LIGL/LIGR = 0x00 22.8 23.9 24.9
LIGL/LIGR = 0x01 20.7 21.9 22.9
LIGL/LIGR = 0x02 18.9 20 20.9
LIGL/LIGR = 0x04 14.9 16 16.9
Line Input Level Adjust AV
LINE
LIGL/LIGR = 0x08 6.9 8 8.9
dB