Datasheet

MAX98090 Ultra-Low Power Stereo Audio Codec
Maxim Integrated │ 42
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)
LINE INPUT TO ADC RECORD PATH OUTPUT
10k1k10010 100k
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY (LINE TO ADC)
MAX98090 toc31
FREQUENCY (Hz)
THD+N RATIO (dB)
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-100
f
MCLK
= 12.288MHz
f
LRCLK
= 48kHz
A
V_LINEPGA
= -6dB
V
IN_SE
= 0.5V
RMS
V
IN_DIFF
= 1V
RMS
C
IN
= 10µF
DIFFERENTIAL
SINGLE-ENDED
10k1k10010 100k
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY (LINE TO ADC)
MAX98090 toc34
FREQUENCY (Hz)
THD+N RATIO (dB)
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-100
f
MCLK
= 12.288MHz
f
LRCLK
= 48kHz
A
V_LINEPGA
= -9dB
V
IN_SE
= 2V
RMS
C
IN
= 10µF
SINGLE-ENDED
DIFFERENTIAL
10k1k10010 100k
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY (LINE TO ADC)
MAX98090 toc32
FREQUENCY (Hz)
THD+N RATIO (dB)
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-100
f
MCLK
= 12.288MHz
f
LRCLK
= 48kHz
A
V_LINEPGA
= 0dB
V
IN_SE
= 354mV
RMS
V
IN_DIFF
= 707mV
RMS
C
IN
= 10µF
SINGLE-ENDED
DIFFERENTIAL
10k1k10010 100k
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (LINE TO ADC)
MAX98090 toc35
FREQUENCY (Hz)
f
MCLK
= 12.288MHz
f
LRCLK
= 48kHz
V
IN
SINGLE-ENDED
V
RIPPLE
= 100mV
P-P
C
IN
= 10µF
BIAS_MODE = 0
100
90
PSRR (dB)
0
10
20
30
40
50
60
70
80
BIAS_MODE = 1
10k1k10010 100k
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY (LINE TO ADC)
MAX98090 toc33
FREQUENCY (Hz)
THD+N RATIO (dB)
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-100
f
MCLK
= 12.288MHz
f
LRCLK
= 48kHz
A
V_LINEPGA
= +20dB
V
IN_SE
= 35.4mV
RMS
V
IN_DIFF
= 70.7mV
RMS
C
IN
= 10µF
SINGLE-ENDED
DIFFERENTIAL
-120
-100
-80
-60
-40
-20
10k1k10010 100k
CROSSTALK vs. FREQUENCY
(LINE TO ADC)
MAX98090 toc36
FREQUENCY (Hz)
f
MCLK
= 12.288MHz
f
LRCLK
= 48kHz
V
IN
= 0.5mV
RMS
A
V_LINEPRE
= 0dB
C
IN
= 10µF
DIFFERENTIAL
0
CROSSTALK (dB)
-140
SINGLE-ENDED