
Stereo Audio CODEC
with FlexSound Technology
MAX9888
38
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.)
DAC to Speaker
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (DAC TO SPEAKER)
MAX9888
toc49
OUTPUT POWER (W)
THD+N
RATIO
(dB)
1.0
0.8
0.6
0.4
0.2
-80
-70
-60
-50
-40
-30
-20
-10
0
-90
0
1.2
VSPK_VDD = 4.2V
MCLK = 12.288MHz, LRCLK = 48kHz
NI MODE
ZSPK = 8I + 68H
AVSPK_ = +8dB
f = 6000Hz
f = 1000Hz
f = 100Hz
THD+N
RATIO
(dB)
-70
-60
-50
-40
-30
-20
-10
0
-80
MAX9888
toc50
OUTPUT POWER (W)
0.8
0.6
0.4
0.2
0
1.0
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (DAC TO SPEAKER)
f = 100Hz
VSPK_VDD = 3.7V
MCLK = 12.288MHz, LRCLK = 48kHz
NI MODE
ZSPK = 8I + 68H
AVSPK_ = +8dB
f = 1000Hz
f = 6000Hz
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (DAC TO SPEAKER)
MAX9888
toc51
THD+N
RATIO
(dB)
-70
-60
-50
-40
-20
-30
-10
-80
0
OUTPUT POWER (W)
0.5
0.4
0.3
0.2
0.1
0
0.6
VSPK_VDD = 3.V
MCLK = 12.288MHz, LRCLK = 48kHz
NI MODE
ZSPK = 8I + 68H
AVSPK_ = +8dB
f = 6000Hz
f = 1000Hz
f = 100Hz
VSPK_VDD = 4.2V
MCLK = 12.288MHz, LRCLK = 48kHz
NI MODE
ZSPK = 4I + 33H
AVSPK_ = +8dB
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (DAC TO SPEAKER)
MAX9888
toc52
OUTPUT POWER (W)
THD+N
RATIO
(dB)
2.0
1.5
1.0
0.5
0
2.5
-80
-70
-60
-50
-40
-30
-20
-10
0
-90
f = 6000Hz
f = 1000Hz
f = 100Hz
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (DAC TO SPEAKER)
VSPK_VDD = 3.7V
MCLK = 12.288MHz, LRCLK = 48kHz
NI MODE
ZSPK = 4I + 33H
AVSPK_ = +8dB
MAX9888
toc53
THD+N
RATIO
(dB)
-80
-70
-60
-50
-40
-30
-20
-10
0
-90
OUTPUT POWER (W)
1.5
1.0
0.5
0
2.0
f = 6000Hz
f = 1000Hz
f = 100Hz
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (DAC TO SPEAKER)
MAX9888
toc54
OUTPUT POWER (W)
1.2
1.0
0.6
0.8
0.4
0.2
0
1.4
THD+N
RATIO
(dB)
-80
-70
-60
-50
-40
-30
-20
-10
-90
0
VSPK_VDD = 3V
MCLK = 12.288MHz,
LRCLK = 48kHz
NI MODE
ZSPK = 4I + 33H
AVSPK_ = +8dB
f = 6000Hz
f = 1000Hz
f = 100Hz