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Stereo Audio CODEC
with FlexSound Technology
MAX9888
42
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.)
Line to Speaker
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (LINE TO SPEAKER)
OUTPUT POWER (W)
0.8
0.6
0.2
0.4
0
MAX9888
toc73
THD+N
RATIO
(dB)
-70
-60
-50
-40
-20
-30
-10
0
-80
ZSPK = 8I + 68H
AVSPK_ = +8dB
f = 6000Hz
f = 1000Hz
f = 100Hz
FREQUENCY (Hz)
10,000
1000
100
10
100,000
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (LINE TO SPEAKER)
THD+N
RATIO
(dB)
-80
-70
-60
-50
-40
-30
-20
-10
-90
0
MAX9888
toc74
ZSPK = 8I + 68H
CIN = 1F
AVSPK_ = +8dB
POUT = 0.55W
POUT = 0.25W
GAIN vs. FREQUENCY
(LINE TO SPEAKER)
MAX9888
toc75
NORMALIZED
GAIN
(dB)
-4
-3
-2
-1
0
1
2
3
4
5
-5
FREQUENCY (Hz)
10,000
1000
100
10
100,000
ZSPK = 8I + 68H
CIN = 1F
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (LINE TO SPEAKER)
MAX9888
toc76
PSRR
(dB)
-80
-60
-40
-20
0
-100
FREQUENCY (Hz)
10,000
1000
100
10
100,000
VRIPPLE = 200mVRMS
INPUT AC GROUNDED
RIPPLE ON AVDD,
DVDD, HPVDD
RIPPLE ON SPKLVDD,
SPKRVDD
FREQUENCY (Hz)
10,000
1000
100
10
100,000
CROSSTALK vs. FREQUENCY
(LINE TO SPEAKER)
CROSSTALK
(dB)
-80
-70
-60
-50
-40
-30
-20
-10
-90
0
MAX9888
toc77
ZSPK = 8I + 68H