Typical operating characteristics (continued) – Rainbow Electronics MAX98088 User Manual
Page 29
Stereo Audio Codec
with FLEXSOUND Technology
MAX98088
29
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.)
GAIN vs. FREQUENCY (MIC TO ADC)
MAX98088 toc07
FREQUENCY (Hz)
NORMALIZED GAIN (dBr1)
1000
100
10
10,000
0
10
MCLK = 13MHz
LRCLK = 8kHz
FREQ MODE
V
IN
= 1V
P-P
AV
MICPRE_
= 0dB
MODE = 1
MODE = 0
-90
-80
-70
-60
-50
-40
-30
-20
-10
COMMON-MODE REJECTION RATIO
vs. FREQUENCY (MIC TO ADC)
MAX98088 toc08
FREQUENCY (Hz)
CMRR (dB)
10,000
1000
100
10
20
30
40
50
60
70
0
10
100,000
MCLK = 12.288MHz
LRCLK = 48kHz
FREQ MODE
MICPRE = 30dB
MICPRE = 20dB
MICPRE = 0dB
POWER-SUPPLY RECTION RATIO
vs. FREQUENCY (MIC TO ADC)
MAX98088 toc09
FREQUENCY (Hz)
PSRR (dB)
10,000
1000
100
-80
-70
-60
-50
-40
-30
-20
-10
0
10
-90
10
100,000
INPUTS AC GROUNDED
V
RIPPLE
= 200mV
P-P
RIPPLE ON SPKLVDD,
SPKRVDD
RIPPLE ON AVDD,
DVDD, HPVDD
FFT, 0dBFS (MIC TO ADC)
MAX98088 toc10
FREQUENCY (Hz)
AMPLITUDE (dBFS)
3500
3000
2000 2500
1000 1500
500
-160
-140
-120
-100
-80
-60
-40
-20
0
20
-180
0
4000
MCLK = 13MHz
LRCLK = 8kHz
FREQ MODE
AV
MICPRE_
= 0dB
FFT, -60dBFS (MIC TO ADC)
MAX98088 toc11
-160
-140
-120
-100
-80
-60
-40
-20
0
-180
FREQUENCY (Hz)
3500
3000
2000 2500
1000 1500
500
0
4000
AMPLITUDE (dBFS)
MCLK = 13MHz
LRCLK = 8kHz
FREQ MODE
AV
MICPRE_
= 0dB
FFT, 0dBFS (MIC TO ADC)
MAX98088 toc12
FREQUENCY (Hz)
AMPLITUDE (dBFS)
15,000
10,000
5000
-120
-100
-80
-60
-40
-20
0
20
-140
0
20,000
MCLK = 13MHz
LRCLK = 44.1kHz
PLL MODE
AV
MICPRE_
= 0dB