User Manual

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MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Typical Operating Characteristics (continued)
(V
AVDD
= V
PVDD
= V
DVDD
= V
DVDDS1
= V
DVDDS2
= 1.8V, V
SPKLVDD
= V
SPKRVDD
= 3.7V. Speaker loads (Z
SPK
) connected between
SPK_P and SPK_N. Receiver load (R
REC
) connected between RECP and RECN. Headphone loads (R
HP
) connected from HPL or HPR
to HPGND. Line out (R
LOUT
) connected from LOUTL or LOUTR to SPKLGND, C
REF
= 2.2FF, C
MICBIAS
= C
REG
= 1FF, C
C1N-C1P
=
1FF, C
HPVDD
= C
HPVSS
= 1FF. AV
MICPRE_
= +20dB, AV
MICPGA_
= 0dB, AV
DACATTN
= 0dB, AV
DACGAIN
= 0dB, AV
ADCLVL
= 0dB,
AV
ADCGAIN
= 0dB, AV
PGAIN_
= 0dB, AV
HP_
= 0dB, AV
REC
= 0dB, AV
SPK_
= 0dB, MCLK = 12.288MHz, LRCLK = 48kHz, MAS = 1. T
A
= +25NC, unless otherwise noted.)
DAC to Receiver
TOTAL HARMONIC DISTORTION
vs. OUTPUT POWER (DAC TO RECEIVER)
MAX98089 toc35
OUTPUT POWER (W)
THD+N RATIO (dB)
0.100.080.060.040.02
-80
-70
-60
-50
-40
-30
-20
-10
0
-90
0 0.12
MCLK = 13MHz
LRCLK = 8kHz
FREQ MODE
R
REC
= 32I
AV
REC
= +8dB
f = 3000Hz
f = 1000Hz
f = 100Hz
TOTAL HARMONIC DISTORTION
vs. FREQUENCY (DAC TO RECEIVER)
MAX98089 toc36
FREQUENCY (Hz)
THD+N RATIO (dB)
1k100
-80
-70
-60
-50
-40
-30
-20
-10
0
-90
10 10k
MCLK = 13MHz
LRCLK = 8kHz
FREQ MODE
R
REC
= 32I
AV
REC
= +8dB
P
OUT
= 0.025W
P
OUT
= 0.05W
OUTPUT POWER vs. SUPPLY VOLTAGE
(DAC TO RECEIVER)
MAX98089 toc37
SUPPLY VOLTAGE (V)
OUTPUT POWER PER CHANNEL (mW)
5.04.54.03.53.0
80
100
120
140
160
180
200
60
2.5 5.5
MCLK = 13MHz
LRCLK = 8kHz
FREQ MODE
R
REC
= 32I
AV
REC
= +8dB
THD+N = 10%
THD+N = 1%
GAIN vs. FREQUENCY
(DAC TO RECEIVER)
MAX98089 toc38
NORMALIZED GAIN (dB)
-4
-3
-2
-1
0
1
2
3
4
5
-5
FREQUENCY (Hz)
10k1k10010
MCLK = 13MHz
LRCLK = 8kHz
FREQ MODE
R
REC
= 32I
POWER CONSUMPTION vs. OUTPUT
POWER (DAC TO RECEIVER)
MAX98089 toc39
OUTPUT POWER PER CHANNEL (mW)
POWER CONSUMPTION (mW)
12080 100604020
50
100
150
200
250
0
0 140
MCLK = 13MHz
LRCLK = 8kHz
FREQ MODE
AV
REC
= +8dB
R
REC
= 32I
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (DAC TO RECEIVER)
MAX98089 toc40
FREQUENCY (Hz)
PSRR (dB)
10k1k100
120
100
0
10 100k
V
RIPPLE
= 200mV
P-P
20
40
60
80
RIPPLE ON AVDD, DVDD, HPVDD
RIPPLE ON SPKLVDD, SPKRVDD