Datasheet
MAX9880A
Low-Power, High-Performance
Dual I
2
S Stereo Audio Codec
18 ______________________________________________________________________________________
TOTAL HARMONIC DISTORTION + NOISE
vs. FREQUENCY (LINE-IN TO HEADPHONE)
MAX9880A toc28
FREQUENCY (Hz)
THD+N (%)
10,0001000100
0.01
0.1
1
10
0.001
10 100,000
LINE-IN PREAMP = 0dB
R
LOAD
= 32
I
DIFFERENTIAL MODE
5mW
20mW
TOTAL HARMONIC DISTORTION + NOISE
vs. FREQUENCY (DAC TO LINE-OUT)
MAX9880A toc29
FREQUENCY (Hz)
THD+N (dB)
1000100
-80
-70
-60
-50
-40
-30
-90
10 10,000
f
MCLK
= 13MHz
f
LRCLK
= 8kHz
0dBFS
FIR
IIR
POWER OUT vs. HEADPHONE LOAD
MAX9880A toc30
HEADPHONE LOAD (Ω)
POWER OUT (mW)
10010
5
10
15
20
25
30
35
40
45
50
0
1 1000
f
MCLK
= 12.288MHz
f
LRCLK
= 48kHz
THD+N ≤ 0.1%
DIFFERENTIAL MODE
OUTPUT POWER vs. LOAD RESISTANCE
(DAC TO HEADPHONE)
MAX9880A toc31
HEADPHONE LOAD (Ω)
POWER OUT (mW)
10010
5
10
15
20
25
0
1 1000
f
MCLK
= 12.288MHz
f
LRCLK
= 48kHz
THD+N ≤ 0.1%
CAPACITORLESS MODE
POWER OUT vs. HEADPHONE LOAD
MAX9880A toc32
HEADPHONE LOAD (Ω)
POWER OUT (mW)
10010
5
10
15
20
25
0
1 1000
f
MCLK
= 12.288MHz
f
LRCLK
= 48kHz
THD+N ≤ 0.1%
SINGLE-ENDED MODE
TOTAL HARMONIC DISTORTION + NOISE
vs. FREQUENCY (MICROPHONE TO ADC)
MAX9880A toc33
FREQUENCY (Hz)
THD+N (%)
1000100
0.01
0.1
1
10
0.001
10 10,000
f
MCLK
= 13MHz
f
LRCLK
= 8kHz
MICPRE = 0dB
V
IN
= 1V
P-P
TOTAL HARMONIC DISTORTION + NOISE
vs. FREQUENCY (MICROPHONE TO ADC)
MAX9880A toc34
FREQUENCY (Hz)
THD+N (%)
1000100
0.01
0.1
1
10
0.001
10 10,000
f
MCLK
= 13MHz
f
LRCLK
= 8kHz
MICPRE = +20dB
V
IN
= 100mV
P-P
TOTAL HARMONIC DISTORTION + NOISE
vs. FREQUENCY (MICROPHONE TO ADC)
MAX9880A toc35
FREQUENCY (Hz)
THD+N (%)
1000100
0.01
0.1
1
10
100
0.001
10 10,000
f
MCLK
= 13MHz
f
LRCLK
= 8kHz
MICPRE = +30dB
V
IN
= 32mV
P-P
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (DAC TO HEADPHONE)
MAX9880A toc36
FREQUENCY (Hz)
PSRR (dB)
10k1k10010
-100
-80
-60
-40
-20
0
-120
1 100k
f
MCLK
= 12.288MHz
f
LRCLK
= 48kHz
V
RIPPLE
= 100mV
P-P
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.)