Datasheet

MAX9867
Ultra-Low Power Stereo Audio Codec
8 _______________________________________________________________________________________
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
V
AVDD
= V
PVDD
= 1.65V to 1.95V 60 78
f = 217Hz, V
RIPPLE
= 100mV
P-P
,
AV
VOL
= 0dB
78
f = 1kHz, V
RIPPLE
= 100mV
P-P
,
AV
VOL
= 0dB
75
Power-Supply Rejection Ratio
(Note 7)
PSRR
f = 10kHz, V
RIPPLE
= 100mV
P-P
,
AV
VOL
= 0dB
62
dB
AV
VOL
= -84dB
differential mode
(LOUTP–LOUTN,
ROUTP–ROUTN),
T
A
= +25°C
±0.2
Output Offset Voltage V
OS
AV
VOL
= -84dB
capacitorless
mode
(LOUTP–LOUTN,
ROUTP–LOUTN),
T
A
= +25°C
±0.8
mV
Differential mode, P
OUT
= 5mW, f = 1kHz 87
TQFN 55
Crosstalk X
TALK
Capacitorless
mode,
P
OUT
= 5mW,
f = 1kHz
WLP 60
dB
R
L
= 32Ω 500
Capacitive Drive
No sustained
oscillations
R
L
= ∞ 100
pF
Into shutdown -80
Click-and-Pop Level
(Differential, Capacitorless
Modes)
Peak voltage,
A-weighted, 32
samples per
second
Out of shutdown -69
dBV
Into shutdown -75
Click-and-Pop Level
(SE Mode)
Peak voltage,
A-weighted, 32
samples per
second
Out of shutdown -75
dBV
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 29.5 30 30.5
dB
PGAML/PGAMR = 0x1F -0.6 -0.1 +0.4
MIC PGA Gain AV
PGAM
PGAML/PGAMR = 0x00 19.3 19.75 20.3
dB
Common-Mode Rejection Ratio CMRR V
IN
= 100mV
P-P
, f = 217Hz 50 dB
MIC Input Resistance R
IN_MIC
All gain settings 30 50 kΩ
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)