Line to adc, Typical operating characteristics (continued) – Rainbow Electronics MAX98088 User Manual
Page 32
Stereo Audio Codec
with FLEXSOUND Technology
MAX98088
32
Typical Operating Characteristics (continued)
(V
AVDD
= V
PVDD
= V
DVDD
= V
DVDDS1
= V
DVDDS2
= +1.8V, V
SPKLVDD
= V
SPKRVDD
= 3.7V. Speaker loads (Z
SPK
) connected
between SPK_P and SPK_N. Receiver load (R
REC
) connected between RECP and RECN. Headphone loads (R
HP
) connected
from HPL or HPR to HPGND. R
HP
= J, R
REC
= J, Z
SPK
= J, C
REF
= 2.2FF, C
MICBIAS
= C
REG
= 1FF, C
C1N-C1P
= 1FF, C
HPVDD
=
C
HPVSS
= 1FF. AV
MICPRE_
= +20dB, AV
MICPGA_
= 0dB, AV
DACATTN
= 0dB, AV
DACGAIN
= 0dB, AV
ADCLVL
= 0dB, AV
ADCGAIN
=
0dB, AV
PGAIN_
= 0dB, AV
HP_
= 0dB, AV
REC
= 0dB, AV
SPK_
= 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. T
A
= +25NC,
unless otherwise noted.)
Line to ADC
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (LINE TO ADC)
MAX98088 toc20
FREQUENCY (Hz)
THD+N RATIO (dB)
10,000
1000
100
-80
-70
-60
-50
-40
-30
-20
-10
0
-90
10
100,000
MCLK = 12.288MHz
LRCLK = 48kHz
NI MODE
V
IN
= 1.4V
P-P
AV
PGAIN_
= -6dB
C
IN
= 1µF
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (LINE TO ADC)
MAX98088 toc21
FREQUENCY (Hz)
THD+N RATIO (dB)
10,000
1000
100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-100
10
100,000
MCLK = 12.288MHz
LRCLK = 48kHz
NI MODE
V
IN
= 1V
P-P
AV
PGAIN_
= 0dB
C
IN
= 1µF
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (LINE TO ADC)
MAX98088 toc22
FREQUENCY (Hz)
THD+N RATIO (dB)
10,000
1000
100
-80
-70
-60
-50
-40
-30
-20
-10
0
-90
10
100,000
MCLK = 12.288MHz
LRCLK = 48kHz
NI MODE
V
IN
= 0.1V
P-P
AV
PGAIN_
= +20dB
C
IN
= 1µF
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (LINE-IN TO ADC)
MAX98088 toc23
FREQUENCY (Hz)
THD+N (dB)
10,000
1000
100
-80
-70
-60
-50
-40
-30
-20
-10
0
-90
10
100,000
MCLK = 12.288MHz
LRCLK = 48kHz
V
IN
= 1V
RMS
EXTERNAL GAIN MODE
R
IN
= 56kI
C
IN
= 1µF
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (LINE-IN TO ADC)
MAX98088 toc24
FREQUENCY (Hz)
PSRR (dB)
10,000
1000
100
-80
-70
-60
-50
-40
-30
-20
-10
0
10
-90
10
100,000
V
RIPPLE
= 200mV
P-P
RIPPLE ON SPKLVDD,
SPKRVDD
RIPPLE ON AVDD,
DVDD, HPVDD