Datasheet

MAX9880A
Low-Power, High-Performance
Dual I
2
S Stereo Audio Codec
4 _______________________________________________________________________________________
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
DVFLT = 0x1
(Elliptical tuned for 16kHz GSM + 217Hz notch)
0.0139 x
f
S
DVFLT = 0x2
(500Hz Butterworth tuned for 16kHz)
0.0156 x
f
S
DVFLT = 0x3
(Elliptical tuned for 8kHz GSM + 217Hz notch)
0.0279 x
f
S
DVFLT = 0x4
(500Hz Butterworth tuned for 8kHz)
0.0312 x
f
S
5th-Order Stopband
Cutoff
(-30dB from Peak,
I
2
C Register
Programmable)
f
DHPSB
DVFLT = 0x5
(f
S
/240 Butterworth)
0.0021 x
f
S
Hz
DC Attenuation DC
ATTEN
DVFLT not equal to 000 90 dB
DAC STEREO AUDIO MODE DIGITAL FIR LOWPASS FILTER (DHF = 0 for f
LRCLK
< 50kHz)
With respect to f
S
within ripple; f
S
= 8kHz to 48kHz 0.43 x f
S
-3dB cutoff 0.47 x f
S
Passband Cutoff f
PLP
-6.02dB cutoff 0.50 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; f = 0.58 f
S
to 7.42 f
S
0.58 x f
S
Hz
Stopband Attenuation f > f
SLP
60 dB
DAC STEREO AUDIO MODE DIGITAL FIR LOWPASS FILTER (DHF = 1 for f
LRCLK
> 50kHz)
Ripple limit cutoff 0.24 x f
S
Passband Cutoff f
PLP
-3dB cutoff 0.33 x f
S
Hz
Passband Ripple f < f
PLP
±0.1 dB
Stopband Cutoff f
SLP
With respect to f
S
; f = 0.5 f
S
to 3.5 f
S
0.5 x f
S
Hz
Stopband Attenuation f > f
SLP
60 dB
DAC STEREO AUDIO MODE DIGITAL DC-BLOCKING HIGHPASS FILTER
Passband Cutoff
(-3dB from Peak)
f
DHPPB
DVFLT = 0x1 (DAI1), DCB = 1 (DAI2)
0.000625 x
f
S
Hz
DC Attenuation DC
ATTEN
DVFLT = 0x1 (DAI1), DCB = 1 (DAI2) 90 dB
ADC (Note 6)
f
S
= 8kHz, MODE = 0 (IIR voice), T
A
= +25°C 72 82
Dynamic Range
(Note 5)
DR
f
S
= 8kHz to 48kHz, MODE = 1 (FIR audio) (Note 7) 84
dB
Full-Scale Input
Differential MIC input or stereo line inputs,
AV
PRE
= 0dB, AV
PGAM
= 0dB
1 V
P-P
Gain Error (Note 7)
DC accuracy, measured with respect to 80% of full-
scale output
1 5 %
f
S
= 8kHz 1.2
Voice Path Phase Delay
1kHz, 0dB input, highpass
filter disabled measured from
analog input to digital output;
MODE = 0
(
IIR voice
)
f
S
= 16kHz 0.61
ms
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)