Datasheet

MAX98090 Ultra-Low Power Stereo Audio Codec
Maxim Integrated │ 61
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 HEADPHONE OUTPUT (CONTINUED)
1k10010 10k
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY (DAC TO HEADPHONE)
MAX98090 toc136
FREQUENCY (Hz)
THD+N RATIO (dB)
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-100
f
MCLK
= 13MHz
f
LRCLK
= 8kHz
A
V_HP
= +3dB
R
HP
= 32I
P
OUT
= 0.01W P
OUT
= 0.02W
10k1k10010 100k
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY (DAC TO HEADPHONE)
MAX98090 toc137
FREQUENCY (Hz)
THD+N RATIO (dB)
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-100
f
MCLK
= 13MHz
f
LRCLK
= 44.1kHz
A
V_HP
= +3dB
R
HP
= 32I
P
OUT
= 0.02W
P
OUT
= 0.01W
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (DAC TO HEADPHONE)
MAX98090 toc135
THD+N RATIO (dB)
-80
-70
-60
-50
-40
-30
-20
-10
0
-100
-90
f
MCLK
= 12.288MHz
f
LRCLK
= 48kHz
LOW POWER MODE
A
V_HP
= +3dB
R
HP
= 32I
OUTPUT POWER (W)
0.040.030.020.010 0.05
f = 1000Hz
f = 6000Hz
f = 100Hz
10k1k10010 100k
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY (DAC TO HEADPHONE)
MAX98090 toc139
FREQUENCY (Hz)
THD+N RATIO (dB)
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-100
f
MCLK
= 12.288MHz
f
LRCLK
= 96kHz
A
V_HP
= +3dB
R
HP
= 32I
P
OUT
= 0.02W
P
OUT
= 0.01W
10k1k10010 100k
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY (DAC TO HEADPHONE)
MAX98090 toc138
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_HP
= +3dB
R
HP
= 32I
P
OUT
= 0.02W
P
OUT
= 0.01W
10k1k10010 100k
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY (DAC TO HEADPHONE)
MAX98090 toc140
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_HP
= +3dB
R
HP
= 16I
P
OUT
= 0.01W
P
OUT
= 0.025W