Datasheet

MAX9880A
Low-Power, High-Performance
Dual I
2
S Stereo Audio Codec
_______________________________________________________________________________________ 3
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
DAC (Note 4)
Master or slave mode 96
Dynamic Range
(Note 5)
DR
f
S
= 48kHz, AV
VOL
= 0dB,
T
A
= +25°C
Slave mode 88
dB
Differential mode 1
Full-Scale Output
Capacitorless and single-ended modes 0.56
V
RMS
Gain Error
DC accuracy, measured with respect to full-scale
output
1 5 %
f
S
= 8kHz 1.2
Voice Path Phase Delay P
DLY
1kHz, 0dB input, highpass
filter disabled measured from
digital input to analog output;
MODE = 0 (IIR voice)
f
S
= 16kHz 0.59
ms
Total Harmonic
Distortion
THD
f
MCLK
= 12.288MHz, f
S
= 48kHz, 0dBFS, measured
at headphone outputs
-75 dB
DAC Attenuation Range AV
DAC
VDACA/SDACA = 0xF to 0x0 -15 0 dB
DAC Gain Adjust AV
GAIN
VDACG = 00 to 11 0 +18 dB
V
AVDD
= V
PVDD
= 1.65V to 1.95V 85
f = 217Hz, V
RIPPLE
= 100mV
P-P
, AV
VOL
= 0dB 85
f = 1kHz, V
RIPPLE
= 100mV
P-P
, AV
VOL
= 0dB 80
Power-Supply Rejection
Ratio
PSRR
f = 10kHz, V
RIPPLE
= 100mV
P-P
, AV
VOL
= 0dB 74
dB
DAC VOICE MODE DIGITAL IIR LOWPASS FILTER (6x Interpolation)
With respect to f
S
within ripple; f
S
= 8kHz to 48kHz 0.448 x f
S
Passband Cutoff f
PLP
-3dB cutoff 0.451 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 0.476 x f
S
Hz
Stopband Attenuation f > f
SLP
, f = 20Hz to 20kHz 75 dB
DAC VOICE MODE DIGITAL 5th-ORDER IIR HIGHPASS FILTER
DVFLT = 0x1
(Elliptical tuned for 16kHz GSM + 217Hz notch)
0.0161 x
f
S
DVFLT = 0x2
(500Hz Butterworth tuned for 16kHz)
0.0312 x
f
S
DVFLT = 0x3
(Elliptical tuned for 8kHz GSM + 217Hz notch)
0.0321 x
f
S
DVFLT = 0x4
(500Hz Butterworth tuned for 8kHz)
0.0625 x
f
S
5th-Order Passband
Cutoff
(-3dB from Peak,
I
2
C Register
Programmable)
f
DHPPB
DVFLT = 0x5
(f
S
/240 Butterworth)
0.0042 x
f
S
Hz