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.)
DAC-to-Line Output
Line-to-Line Output
INBAND OUTPUT SPECTRUM,
0dBFS (DAC TO LINE)
MAX98089
toc49
FREQUENCY (kHz)
AMPLITUDE
(dBV)
15
10
5
-120
-100
-80
-60
-40
-20
0
20
-140
020
MCLK = 13MHz
LRCLK = 8kHz
FREQ MODE
RLOAD = 10kI
FREQUENCY (kHz)
18
16
2
4
6
10 12
8
14
020
INBAND OUTPUT SPECTRUM,
-60dBFS (DAC TO LINE)
MAX98089
toc50
AMPLITUDE
(dBV)
-120
-100
-80
-60
-40
-20
0
-140
MCLK = 13MHz
LRCLK = 8kHz
FREQ MODE
RLINE = 10kI
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT LEVEL
(LINE-IN TO LINE-OUT)
MAX98089
toc51
OUTPUT LEVEL (VRMS)
THD+N
(dB)
1.2
1.0
0.6
0.8
0.4
0.2
-80
-70
-60
-50
-40
-30
-20
-10
0
-90
0
1.4
RLOAD = 10kI
f = 6kHz
f = 1kHz
f = 100Hz
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (LINE-IN TO LINE-OUT)
MAX98089
toc53
FREQUENCY (Hz)
THD+N
(dB)
10k
1k
100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-100
10
100k
VIN = 1VRMS
RLINE = 10kI
EXTERNAL GAIN MODE
REXT = 56kI
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (LINE IN TO LINE OUT)
MAX98089
toc52
FREQUENCY (Hz)
THD+N
RATIO
(dB)
10k
1k
100
-80
-70
-60
-50
-40
-30
-20
-10
0
-90
10
100k
VOUT = 0.2VRMS
VOUT = 0.8VRMS
RLINE = 10kI
Maxim Integrated
38
MAX98089