Stereo Audio CODEC
with FlexSound Technology
MAX9888
37
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 Receiver
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
(LINE TO RECEIVER)
MAX9888
toc45
OUTPUT POWER (W)
THD+N
RATIO
(dB)
0.08
0.06
0.02
0.04
-70
-60
-50
-40
-20
-30
-10
0
-80
0
0.10
RREC = 32I
AVREC = +8dB
f = 6000Hz
f = 1000Hz
f = 100Hz
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
(LINE TO RECEIVER)
MAX9888
toc46
FREQUENCY (Hz)
THD+N
RATIO
(dB)
10,000
1000
100
-80
-70
-60
-50
-40
-30
-20
-10
0
-90
10
100,000
RREC = 32I
CIN = 1F
AVREC = +8dB
POUT = 0.025W
POUT = 0.05W
GAIN vs. FREQUENCY (LINE TO RECEIVER)
MAX9888
toc47
FREQUENCY (Hz)
NORMALIZED
GAIN
(dB)
10,000
1000
100
-4
-3
-2
-1
0
1
2
3
4
5
-5
10
100,000
RREC = 32I
CIN = 1F
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (LINE TO RECEIVER)
MAX9888
toc48
FREQUENCY (Hz)
PSRR
(dB)
10,000
1000
100
-80
-60
-40
-20
0
-100
10
100,000
VRIPPLE = 200mVP-P
INPUT AC GROUNDED
RIPPLE ON SPKLVDD,
SPKRVDD
RIPPLE ON AVDD,
DVDD, HPVDD