Datasheet

MAX9880A
Low-Power, High-Performance
Dual I
2
S Stereo Audio Codec
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WIDEBAND FFT, DAC TO HEADPHONE,
0dBFS, f
MCLK
= 13MHz, f
LRCLK
= 8kHz
MAX9880A toc55
FREQUENCY (Hz)
AMPLITUDE (dB)
100k80k20k 40k 60k
-120
-100
-80
-60
-40
-20
0
20
-140
0 120k
FREQ1 = 0xA
WIDEBAND FFT, DAC TO HEADPHONE,
-60dBFS, f
MCLK
= 13MHz, f
LRCLK
= 8kHz
MAX9880A toc56
FREQUENCY (Hz)
AMPLITUDE (dB)
100k80k60k40k20k
-120
-100
-80
-60
-40
-20
0
-140
0 120k
FREQ1 = 0xA
DAC IIR HIGHPASS FILTER FREQUENCY
RESPONSE, MODE = 0
MAX9880A toc57
FREQUENCY (Hz)
AMPLITUDE (dB)
500400300200100
-80
-60
-40
-20
0
20
-100
0 600
f
LRCLK
= 8kHz
DVFLT = 0
DVFLT = 3
DVFLT = 4
ADC IIR HIGHPASS FILTER FREQUENCY
RESPONSE, MODE = 0
MAX9880A toc58
FREQUENCY (Hz)
AMPLITUDE (dB)
500400300200100
-80
-60
-40
-20
0
20
-100
0 600
f
LRCLK
= 8kHz
AVFLT = 0
AVFLT = 3
AVFLT = 4
DAC IIR/FIR LOWPASS FILTER FREQUENCY
RESPONSE (f
LRCLK
= 8kHz)
MAX9880A toc59
FREQUENCY (Hz)
AMPLITUDE (dB)
3800360034003200
-80
-60
-40
-20
0
20
-100
3000 4000
MODE = 1
MODE = 0
DAC FIR LOWPASS FILTER FREQUENCY
RESPONSE (f
LRCLK
= 96kHz)
MAX9880A toc60
FREQUENCY (Hz)
AMPLITUDE (dB)
44k40k36k32k28k24k
-80
-60
-40
-20
0
20
-100
20k 48k
ADC IIR/FIR LOWPASS FILTER FREQUENCY
RESPONSE (f
LRCLK
= 8kHz)
MAX9880A toc61
FREQUENCY (Hz)
AMPLITUDE (dB)
3800360034003200
-80
-60
-40
-20
0
20
-100
3000 4000
MODE = 1
MODE = 0
SHUTDOWN TO FULL OPERATION
(DIFFERENTIAL)
MAX9880A toc62
TIME (4ms/div)
SCL (1V/div)LOUTP (500mV/div)
SHUTDOWN TO FULL OPERATION
(SE CLICKLESS)
MAX9880A toc63
TIME (40ms/div)
SCL (1V/div)LOUTP (500mV/div)
Typical Operating 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,
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, differential output, unless otherwise noted.)