Datasheet

MAX98090 Ultra-Low Power Stereo Audio Codec
Maxim Integrated │ 46
www.maximintegrated.com
Typical Operating Characteristics (continued)
(V
AVDD
= V
HPVDD
= V
DVDDIO
= 1.8V, V
DVDD
= 1.2V, V
SPKLVDD
= V
SPKRVDD
= V
SPKVDD
= 3.7V. Receiver load (R
RCV
) connected
between RCVP/LOUTL and RCVN/LOUTR (LINMOD = 0). Line output loads (R
LOUT
) connected between from RCVP/LOUTL and
RCVN/LOUTR to GND (LINMOD = 1). Headphone loads (R
HP
) connected from HPL or HPR to GND. Speaker loads (Z
SPK
) con-
nected between SPK_P and SPK_N. R
RCV
= J, R
LOUT
= J, R
HP
= J, Z
SPK
= J. C
REF
= 2.2µF, C
BIAS
= C
MICBIAS
= 1µF, C
C1N-C1P
= C
CPVDD
= C
CPVSS
= 1µF. A
V_MICPRE_
= A
V_MICPGA_
= A
V_LINEPGA_
= 0dB, A
V_ADCLVL
= A
V_ADCGAIN
= 0dB, A
V_DACLVL
=
A
V_DACGAIN
= 0dB, A
V_MIXGAIN
= 0dB, A
V_RCV
= A
V_LOUT
= A
V_HP
= A
V_SPK
= 0dB. f
MCLK
= 12.288MHz, f
LRCLK
= 48kHz, MAS =
0, 20-bit source data. T
A
= T
MIN
to T
MAX
unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 2)
DAC PLAYBACK PATH INPUT TO RECEIVER OUTPUT (CONTINUED)
POWER CONSUMPTION vs.
OUTPUT POWER (DAC TO RECEIVER)
MAX98090 toc55
OUTPUT POWER (mW)
POWER CONSUMPTION (mW)
12010080604020
40
80
120
160
200
0
0 140
f
MCLK
= 13MHz
f
LRCLK
= 8kHz
BIAS_MODE = 1
THD+N ≤ 1%
A
V_REC
= +8dB
R
REC
= 16I
R
REC
= 32I
OUTPUT POWER vs. SPEAKER
SUPPLY VOLTAGE (DAC TO RECEIVER)
MAX98090 toc53
SPEAKER SUPPLY VOLTAGE (V)
RECEIVER OUTPUT POWER (mW)
5.04.54.03.53.0
25
50
75
100
125
150
0
2.5 5.5
BIAS_MODE = 0
BIAS_MODE = 1
f
MCLK
= 13MHz
f
LRCLK
= 8kHz
A
V_REC
= +8dB
R
REC
= 32I
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (DAC TO RECEIVER)
MAX98090 toc56
FREQUENCY (Hz)
PSRR (dB)
10k1k10010 100k
10
20
30
40
50
60
70
80
90
100
0
f
MCLK
= 12.288MHz
f
LRCLK
= 48kHz
V
RIPPLE
= 100mV
P-P
R
REC
= 32I
OTHER SUPPLIES
SPK_VDD
GAIN vs. FREQUENCY (DAC TO RECEIVER)
MAX98090 toc54
FREQUENCY (Hz)
NORMALIZED GAIN (dB)
1k10010 10k
-4
-3
-2
-1
0
1
2
3
4
5
-5
f
MCLK
= 13MHz
f
LRCLK
= 8kHz
VOICE FILTER
A
V_REC
= 0dB
R
REC
= 32I
INBAND OUTPUT SPECTRUM,
-3dBFS INPUT (DAC TO RECEIVER)
MAX98090 toc57
FREQUENCY (kHz)
OUTPUT AMPLITUDE (dBV)
15105
-140
-120
-100
-80
-60
-40
-20
0
20
-160
02
0
f
MCLK
= 13MHz
f
LRCLK
= 8kHz
A
V_REC
= 0dB
R
REC
= 32I
INBAND OUTPUT SPECTRUM,
-60dBFS INPUT (DAC TO RECEIVER)
MAX98090 toc58
FREQUENCY (kHz)
OUTPUT AMPLITUDE (dBV)
15105
-140
-120
-100
-80
-60
-40
-20
0
20
-160
02
0
f
MCLK
= 13MHz
f
LRCLK
= 8kHz
A
V_REC
= 0dB
R
HP
= 32I