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Stereo Audio CODEC
with FlexSound Technology
MAX9888
45
Typical Operating Characteristics (continued)
(VAVDD = VHPVDD = VDVDD = VDVDDS1 = VDVDDS2 = +1.8V, VSPKLVDD = VSPKRVDD = 3.7V. Speaker loads (ZSPK) connected
between SPK_P and SPK_N. Receiver load (RREC) connected between RECP and RECN. Headphone loads (RHP) connected from
HPL or HPR to GND. RHP = J, RREC = J, ZSPK = J, CREF = 2.2FF, CMICBIAS = CPREG = CREG = 1FF, CC1N-C1P = 1FF, CHPVSS
= 1FF. AVMICPRE_ = +20dB, AVMICPGA_ = 0dB, AVDACATTN = 0dB, AVDACGAIN = 0dB, AVADCLVL = 0dB, AVADCGAIN = 0dB,
AVPGAIN_ = 0dB, AVPGAOUT_ = 0dB, AVHP_ = 0dB, AVREC = 0dB, AVSPK_ = 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS =
1. TA = +25NC, unless otherwise noted.)
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (DAC TO HEADPHONE)
MAX9888
toc90
PSRR
(dB)
-80
-60
-40
-20
0
-100
FREQUENCY (Hz)
10,000
1000
100
10
100,000
VRIPPLE = 200mVP-P
INPUT ALL ZEROS
RIPPLE ON SPKLVDD,
SPKRVDD
RIPPLE ON AVDD,
DVDD, HPVDD
CROSSTALK vs. FREQUENCY
(DAC TO HEADPHONE)
MAX9888
toc91
CROSSTALK
(dB)
-90
-80
-70
-60
-50
-40
-100
FREQUENCY (Hz)
10,000
1000
100
10
100,000
MCLK = 12.288MHz
LRCLK = 48kHz
NI MODE
RHP = 32I
SOFTWARE TURN-ON/OFF RESPONSE
(DAC TO HEADPHONE, VSEN = 0)
MAX9888 toc92
SCL
2V/div
HEADPHONE
OUTPUT
0.5V/div
10ms/div
SOFTWARE TURN-ON/OFF RESPONSE
(DAC TO HEADPHONE, VSEN = 1)
MAX9888 toc93
SCL
2V/div
HEADPHONE
OUTPUT
0.5V/div
10ms/div
FFT, 0dBFS (DAC TO HEADPHONE)
MAX9888
toc94
FREQUENCY (Hz)
AMPLITUDE
(dBV)
15,000
10,000
5000
-120
-100
-80
-60
-40
-20
0
-140
0
20,000
MCLK = 13MHz,
LRCLK = 8kHz
FREQ MODE
RHP = 32I
FFT, -60dBFS (DAC TO HEADPHONE)
MAX9888
toc95
FREQUENCY (Hz)
AMPLITUDE
(dBV)
15,000
10,000
5000
-140
-120
-100
-80
-60
-40
-20
0
-160
0
20,000
MCLK = 13MHz,
LRCLK = 8kHz
FREQ MODE
RHP = 32I