
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 Headphone
FFT, -60dBFS (DAC TO HEADPHONE)
MAX98089
toc117
FREQUENCY (kHz)
AMPLITUDE
(dBV)
15
10
5
-120
-100
-80
-60
-40
-20
0
-160
-140
020
MCLK = 12.288MHz
LRCLK = 96kHz
NI MODE
RHP = 32I
FFT, 0dBFS (DAC TO HEADPHONE)
MAX98089
toc118
FREQUENCY (kHz)
AMPLITUDE
(dBV)
18
16
2
4
6
10 12
8
14
-120
-100
-80
-60
-40
-20
0
20
-140
020
MCLK = 12.288MHz
LRCLK = 48kHz
LOW-POWER MODE
RHP = 32I
FFT, -60dBFS (DAC TO HEADPHONE)
MAX98089
toc119
FREQUENCY (kHz)
AMPLITUDE
(dBV)
15
10
5
-120
-100
-80
-60
-40
-20
0
-140
020
MCLK = 12.288MHz
LRCLK = 48kHz
LOW POWER MODE
RHP = 32I
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (LINE TO HEADPHONE)
MAX98089
toc120
OUTPUT POWER (W)
THD+N
RATIO
(dB)
-80
-70
-60
-50
-40
-30
-20
-10
0
-90
RHP = 32I
AVHP_ = +3dB
f = 6000Hz
f = 1000Hz
f = 100Hz
0.045
0.035
0.010
0.020
0.030
0.040
0.050
0.015
0.025
0.005
0
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (LINE TO HEADPHONE)
MAX98089
toc121
FREQUENCY (Hz)
THD+N
RATIO
(dB)
10k
1k
100
-80
-70
-60
-50
-40
-30
-20
-10
0
-90
10
100k
RHP = 32I
AVHP_ = +3dB
CIN = 1F
POUT = 0.02W
POUT = 0.01W
Maxim Integrated
52
MAX98089