Rainbow Electronics MAX98089 - Manual (Page 33)

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MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
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. Line out (R LOUT ) connected from LOUTL or LOUTR to SPKLGND, 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)
MAX98089 toc27
FREQUENCY (kHz)
AMPLITUDE (dBFS)
15 10 5
-160
-140
-120
-100
-80
-60
-40
-20
0
-180
0 20
MCLK = 12.288MHz
LRCLK = 48kHz
NI MODE
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (LINE TO ADC PIN DIRECT)
MAX98089 toc25
FREQUENCY (Hz)
THD+N RATIO (dB)
10k 1k 100
-80
-70
-60
-50
-40
-30
-20
-10
0
-90
10 100k
MCLK = 12.288MHz
LRCLK = 48kHz
NI MODE
V IN = 1V P-P
AV PGAIN_ = 0dB
C IN = 1µF
FFT, -60dBFS (SDINS1 TO SDINS2
DIGITAL LOOPBACK)
MAX98089 toc28
FREQUENCY (kHz)
AMPLITUDE (dBFS)
15 10 5
-160
-140
-120
-100
-80
-60
-40
-20
0
-180
0 20
MCLK = 12.288MHz
LRCLK = 48kHz
NI MODE
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (LINE TO ADC PIN DIRECT)
MAX98089 toc26
PSRR (dB)
20
40
60
80
100
120
0
V RIPPLE = 200mV P-P
10k 1k 100 10 100k
FREQUENCY (Hz)
RIPPLE ON SPKLVDD, SPKRVDD
RIPPLE ON AVDD, DVDD, HPVDD