Datasheet

MAX98090 Ultra-Low Power Stereo Audio Codec
Maxim Integrated │ 59
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)
100
90
0
10
20
30
40
50
60
70
80
FREQUENCY (Hz)
1k 100k
PSRR (dB)
10k10010
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (LINE TO SPEAKER)
MAX98090 toc125
V
RIPPLE
= 100mV
P-P
Z
SPK
= 8I + 68µH
C
IN
= 10µF
OTHER SUPPLIES
SPK_VDD
INBAND OUTPUT SPECTRUM,
-3dBV INPUT (LINE TO SPEAKER)
MAX98090 toc127
FREQUENCY (kHz)
OUTPUT AMPLITUDE (dBV)
15105
-120
-100
-80
-60
-40
-20
0
-140
02
0
A
V_LINEPGA
= -6dB
A
V_SPKPGA
= 0dB
Z
SPK
= 8I + 68µH
C
IN
= 10µF
INBAND OUTPUT SPECTRUM,
-60dBV INPUT (LINE TO SPEAKER)
MAX98090 toc128
FREQUENCY (kHz)
OUTPUT AMPLITUDE (dBV)
15105
-120
-100
-80
-60
-40
-20
0
-140
02
0
A
V_LINEPGA
= -6dB
A
V_SPKPGA
= 0dB
Z
SPK
= 8I + 68µH
C
IN
= 10µF
CROSSTALK vs. FREQUENCY
(LINE TO SPEAKER)
MAX98090 toc126
FREQUENCY (Hz)
CROSSTALK (dB)
-100
-80
-60
-40
-20
0
-120
1k 100k10k10010
A
V_LINEPGA
= 0dB
A
V_SPKPGA
= 0dB
Z
SPK
= 8I + 68µH
C
IN
= 10µF
LEFT TO RIGHT
RIGHT TO LEFT
LINE INPUT TO SPEAKER OUTPUT (CONTINUED)