Low-Power, Stereo Audio Codec
with FlexSound Technology
Typical Operating Characteristics (continued)
(VAVDD = VPVDD = 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 HPGND. Line out (RLOUT) connected from LOUTL or LOUTR to SPKLGND, CREF = 2.2FF, CMICBIAS = CREG = 1FF, CC1N-C1P =
1FF, CHPVDD = CHPVSS = 1FF. AVMICPRE_ = +20dB, AVMICPGA_ = 0dB, AVDACATTN = 0dB, AVDACGAIN = 0dB, AVADCLVL = 0dB,
AVADCGAIN = 0dB, AVPGAIN_ = 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)
MAX98089
toc79
OUTPUT POWER (W)
THD+N
RATIO
(dB)
0.8
0.6
0.2
0.4
-70
-60
-50
-40
-20
-30
-10
0
-80
0
1.0
ZSPK = 8I + 68H
AVSPK_ = +8dB
CIN = 1F
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (LINE TO SPEAKER)
MAX98089
toc80
FREQUENCY (Hz)
THD+N
RATIO
(dB)
10k
1k
100
-80
-70
-60
-50
-40
-30
-20
-10
0
-90
10
100k
ZSPK_ = 8I + 68H
AVSPK_ = +8dB
CIN = 1F
POUT = 0.5W
POUT = 0.25W
GAIN vs. FREQUENCY
(LINE TO SPEAKER)
MAX98089
toc81
FREQUENCY (Hz)
NORMALIZED
GAIN
(dB)
10k
1k
100
-4
-3
-2
-1
0
1
2
3
4
5
-5
10
100k
ZSPK_ = 8I + 68H
CIN = 1F
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (LINE TO SPEAKER)
MAX98089
toc82
FREQUENCY (Hz)
PSRR
(dB)
10k
1k
100
10
20
30
40
50
60
70
80
90
0
10
100k
RIPPLE ON SPKLVDD,
SPKRVDD
INPUTS AC GROUNDED
VRIPPLE = 200mVP-P
RIPPLE ON AVDD,
DVDD, HPVDD
FREQUENCY (Hz)
1k
100k
CROSSTALK
(dB)
10k
100
10
CROSSTALK vs. FREQUENCY
(LINE TO SPEAKER)
MAX98089
toc83
-100
-80
-60
-40
-20
ZFN = 8I + 68H
CIN = 1F
0
-120
LEFT TO RIGHT
RIGHT TO LEFT
Maxim Integrated
44
MAX98089