Datasheet

MAX9867
Ultra-Low Power Stereo Audio Codec
_______________________________________________________________________________________ 9
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
AV
PRE
= 0dB,
V
IN
= 1V
P-P
, f = 1kHz
-80
Total Harmonic Distortion + Noise THD+N
AV
PRE
= +30dB,
V
IN
= 32mV
P-P
, f = 1kHz,
(1V
P-P
at ADC input)
-67
dB
V
AVDD
= 1.65V to 1.95V, input referred 60 85
f = 217Hz, V
RIPPLE
= 100mV,
AV
ADC
= 0dB, input referred
85
f = 1kHz, V
RIPPLE
= 100mV,
AV
ADC
= 0dB, input referred
80
Power-Supply Rejection Ratio PSRR
f = 10kHz, V
RIPPLE
= 100mV,
AV
ADC
= 0dB, input referred
80
dB
MICROPHONE BIAS
Output Voltage V
MICBIAS
V
AVDD
= 1.8V, I
LOAD
= 1mA 1.5 1.525 1.55 V
Load Regulation I
LOAD
= 1mA to 2mA 0.2 10 V/A
Line Regulation V
AVDD
= 1.65V to 1.95V 10 µV/V
f = 217Hz, V
RIPPLE
= 100mV
P-P
85
Power-Supply Rejection Ratio PSRR
f = 10kHz, V
RIPPLE
= 100mV
P-P
81
dB
Noise Voltage A-weighted 9.1 µV
RMS
LINE INPUT
Full-Scale Input V
IN
AV
LINE
= 0dB 1.0 V
P-P
Line Input Level Adjust Range AV
LINE
LIGL/LIGR = 0xF to 0x0 -6.5 +24.5 dB
Line Input Mute Attenuation f = 1kHz 100 dB
Input Resistance R
IN_LINE
AV
LINE
= +24dB 20 kΩ
Total Harmonic Distortion + Noise THD+N V
IN
= 0.1V
P-P
, f = 1kHz, differential output -83 dB
AUXIN INPUT
Input DC Voltage Range AUXEN = 1 0 0.738 V
AUXIN Input Resistance R
IN
AUXEN = 1, 0V ≤ AUXIN ≤ 0.738V 10 40 MΩ
JACK SENSE OPERATION
JDETEN = 1, SHDN = 1, JACKSNS
0.92 x
MICBIAS
0.95 x
MICBIAS
0.98 x
MICBIAS
Threshold V
TH
JDETEN = 1, SHDN = 0, JACKSNS,
LOUTP
AVDD -
0.8
AVDD -
0.4
AVDD -
0.15
V
JDETEN = 1, SHDN = 1,
JACKSNS = GND
4
Pullup Current I
PU
JDETEN = 1, SHDN = 0,
JACKSNS = LOUTP = GND
420
µA
Pullup Voltage JDETEN = 1, JACKSNS, LOUTP AVDD V
ELECTRICAL CHARACTERISTICS (continued)
(V
AVDD
= V
PVDD
= V
DVDD
= V
DVDDIO
= +1.8V, R
L
= ∞, headphone load (R
L
) connected between _OUTP and _OUTN in differential
mode, 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, MCLK = 13MHz, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 2)