Datasheet
MAX98090 Ultra-Low Power Stereo Audio Codec
Maxim Integrated
│
43
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)
DIRECT ANALOG INPUT TO ADC RECORD PATH OUTPUT
LINE INPUT TO ADC RECORD PATH OUTPUT (CONTINUED)
INBAND OUTPUT SPECTRUM
vs. FREQUENCY,-3dBFS INPUT
(LINE TO ADC)
MAX98090 toc37
FREQUENCY (kHz)
OUTPUT AMPLITUDE (dBFS)
15105
02
0
-140
-120
-100
-80
-60
-40
-20
0
20
-160
f
MCLK
= 12.288MHz
f
LRCLK
= 48kHz
V
IN
= 354mV
RMS_SE
A
V_PRE
= 0dB
C
IN
= 10µF
100
90
0
10
20
30
40
50
60
70
80
FREQUENCY (Hz)
1k 100k
PSRR (dB)
10k10010
POWER-SUPPLY REJECTION
RATIO vs. FREQUENCY
(INPUT DIRECT TO ADC MIXER)
MAX98090 toc40
MCLK = 12.288MHz
LRCLK = 48kHz
V
RIPPLE
= 100mV
P-P
C
IN
= 10µF
INBAND OUTPUT SPECTRUM
vs. FREQUENCY, -60dBFS INPUT
(LINE TO ADC)
MAX98090 toc38
FREQUENCY (kHz)
OUTPUT AMPLITUDE (dBFS)
15105
02
0
-140
-120
-100
-80
-60
-40
-20
0
20
-160
f
MCLK
= 12.288MHz
f
LRCLK
= 48kHz
V
IN
= 0.5mV
RMS_SE
A
V_PRE
= 0dB
C
IN
= 10µF
10k1k100 100k
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
(INPUT DIRECT TO ADC MIXER)
MAX98090 toc39
FREQUENCY (Hz)
THD+N RATIO (dB)
10
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-100
f
MCLK
= 12.288MHz
f
LRCLK
= 48kHz
V
IN
= 707mV
RMS
C
IN
= 10µF
FREQUENCY (Hz)
1k 100k
CROSSTALK (dB)
10k10010
CROSSTALK vs. FREQUENCY
(INPUT DIRECT TO ADC MIXER)
MAX98090 toc41
-100
-80
-60
-40
-20
0
-140
-120
f
MCLK
= 12.288MHz
f
LRCLK
= 48kHz
V
IN
= 0.5V
RMS
C
IN
= 10µF
RIGHT TO LEFT
LEFT TO RIGHT