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Stereo Audio CODEC
with FlexSound Technology
MAX9888
44
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.)
FREQUENCY (Hz)
10,000
1000
100
10
100,000
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (DAC TO HEADPHONE)
THD+N
RATIO
(dB)
-80
-70
-60
-50
-40
-30
-20
-10
-90
0
MAX9888
toc84
POUT = 0.025W
POUT = 0.1W
MCLK = 13MHz
LRCLK = 44.1kHz
PLL MODE
RHP = 32I
AVHP_ = +3dB
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (DAC TO HEADPHONE)
MAX9888
toc85
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
RHP = 32I
AVHP_ = +3dB
POUT = 0.025W
POUT = 0.01W
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (DAC TO HEADPHONE)
MAX9888
toc86
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 = 96kHz
NI MODE
RHP = 32I
AVHP_ = +3dB
POUT = 0.025W
POUT = 0.01W
FREQUENCY (Hz)
10,000
1000
100
10
100,000
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (DAC TO HEADPHONE)
THD+N
RATIO
(dB)
-80
-70
-60
-50
-40
-30
-20
-10
-90
0
MAX9888
toc87
POUT = 0.01W
POUT = 0.0.25W
MCLK = 12.288MHz
LRCLK = 48kHz
NI MODE
RHP = 16I
GAIN vs. FREQUENCY
(DAC TO HEADPHONE)
MAX9888
toc88
NORMALIZED
GAIN
(dB)
-60
-50
-40
-30
-20
-10
0
10
-70
FREQUENCY (Hz)
10,000
1000
100
10
100,000
MCLK = 13MHz
LRCLK = 8kHz
NI MODE
RHP = 32I
MODE = 1
MODE = 0
HPVDD INPUT CURRENT vs. OUTPUT
POWER (DAC TO HEADPHONE)
MAX9888
toc89
OUTPUT POWER PER CHANNEL (mW)
HPVDD
INPUT
CURRENT
(mA)
10
1
0.1
20
40
60
80
100
120
0
0.01
100
RHP = 16I
RHP = 32I
MCLK = 12.288MHz
LRCLK = 48kHz
NI MODE