Datasheet

MAX9880A
Low-Power, High-Performance
Dual I
2
S Stereo Audio Codec
_______________________________________________________________________________________ 5
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Total Harmonic
Distortion
THD f = 1kHz, f
S
= 8kHz, T
A
= +25°C, -20dB input -80 -70 dB
ADC Level Adjust
AV
ADC
AVL/AVR = 0xF to 0x0 -12 +3 dB
V
AVDD
= 1.65V to 1.95V, input referred 60 80
f = 217Hz, V
RIPPLE
= 100mV
P-P
, AV
ADC
= 0dB,
input referred
80
f = 1kHz, V
RIPPLE
= 100mV
P-P
, AV
ADC
= 0dB, input
referred
78
Power-Supply Rejection
Ratio
PSRR
f = 10kHz, V
RIPPLE
= 100mV
P-P
, AV
ADC
= 0dB,
input referred
72
dB
ADC VOICE MODE DIGITAL IIR LOWPASS FILTER
With respect to f
S
within ripple; f
S
= 8kHz to 48kHz 0.445 x f
S
Passband Cutoff f
PLP
-3dB cutoff 0.449 x f
S
Hz
Passband Ripple f < f
PLP
±0.1 dB
Stopband Cutoff f
SLP
With respect to f
S
; f
S
= 8kHz to 48kHz 0.469 x f
S
Hz
Stopband Attenuation f > f
SLP
, f = 20Hz to 20kHz 74 dB
ADC VOICE MODE DIGITAL 5th-ORDER IIR HIGHPASS FILTER
AVFLT = 0x1
(Elliptical tuned for 16kHz GSM + 217Hz notch)
0.0161 x
f
S
AVFLT = 0x2
(500Hz Butterworth tuned for 16kHz)
0.0312 x
f
S
AVFLT = 0x3
(Elliptical tuned for 8kHz GSM + 217Hz notch)
0.0321 x
f
S
AVFLT = 0x4
(500Hz Butterworth tuned for 8kHz)
0.0625 x
f
S
Passband Cutoff
(-3dB from Peak)
f
AHPPB
AVFLT = 0x5 (f
S
/240 Butterworth) 0.0042 x f
S
Hz
AVFLT = 0x1 (Elliptical tuned for 16kHz GSM +
217Hz notch)
0.0139 x
f
S
AVFLT = 0x2 (500Hz Butterworth tuned for 16kHz) 0.0156 x f
S
AVFLT = 0x3 (Elliptical tuned for 8kHz GSM +
217Hz notch)
0.0279 x
f
S
AVFLT = 0x4 (500Hz Butterworth tuned for 8kHz) 0.0312 x f
S
Stopband Cutoff
(-30dB from Peak)
f
AHPSB
AVFLT = 0x5 (f
S
/240 Butterworth) 0.0021 x f
S
Hz
DC Attenuation DC
ATTEN
AVFLT  000 90 dB
ADC STEREO AUDIO MODE DIGITAL FIR LOWPASS FILTER
With respect to f
S
within ripple; f
S
= 8kHz to 48kHz 0.43 x f
S
-3dB cutoff 0.48 x f
S
Passband Cutoff f
PLP
-6.02dB cutoff 0.5 x f
S
Hz
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)