Rainbow Electronics MAX98088 - Manual (Page 33)

Stereo Audio Codec
with FLEXSOUND Technology
MAX98088
33
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.)
Digital Loopback
Line-In Pin Direct to ADC
FFT, 0dBFS (SDINS1 TO SDINS2
DIGITAL LOOPBACK)
MAX98088 toc27
FREQUENCY (Hz)
AMPLITUDE (dBFS)
15,000 10,000 5000
-160
-140
-120
-100
-80
-60
-40
-20
0
-180
0 20,000
MCLK = 12.288MHz
LRCLK = 48kHz
NI MODE
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (LINE-IN DIRECT TO ADC)
MAX98088 toc25
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
C IN = 1µF
FFT, -60dBFS (SDINS1 TO SDINS2
DIGITAL LOOPBACK)
MAX98088 toc28
FREQUENCY (Hz)
AMPLITUDE (dBFS)
15,000 10,000 5000
-160
-140
-120
-100
-80
-60
-40
-20
0
-180
0 20,000
MCLK = 12.288MHz
LRCLK = 48kHz
NI MODE
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (LINE-IN DIRECT TO ADC)
MAX98088 toc26
FREQUENCY (Hz)
PSRR (dBr1)
10,000 1000 100
-80
-70
-60
-50
-40
-30
-20
-10
0
-90
10 100,000
V RIPPLE = 200mV P-P
RIPPLE ON SPKLVDD, SPKRVDD
RIPPLE ON AVDD,
DVDD, HPVDD