Datasheet
MAX98090 Ultra-Low Power Stereo Audio Codec
Maxim Integrated
│
52
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 SPEAKER OUTPUT (CONTINUED)
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
0.0 1.0 2.0 3.0
THD+N RATIO (dB)
OUTPUT POWER (W)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (DAC TO SPEAKER)
MAX98090 toc85
V
SPKVDD
= 5V
f
MCLK
= 12.288MHz
f
LRCLK
= 48kHz
A
V_SPKPGA
= +8dB
Z
SPK
= 4Ω + 33µH
TQFN PACKAGE
f
IN
= 6000Hz
f
IN
= 100Hz
f
IN
= 1000Hz
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
0.0 0.5 1.0 1.5 2.0 2.5
THD+N RATIO (dB)
OUTPUT POWER (W)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (DAC TO SPEAKER)
MAX98090 toc86
V
SPKVDD
= 4.2V
f
MCLK
= 12.288MHz
f
LRCLK
= 48kHz
A
V_SPKPGA
= +8dB
Z
SPK
= 4Ω + 33µH
TQFN PACKAGE
f
IN
= 6000Hz
f
IN
= 100Hz
f
IN
= 1000Hz
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00
THD+N RATIO (dB)
OUTPUT POWER (W)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (DAC TO SPEAKER)
MAX98090 toc87
V
SPKVDD
= 3.7V
f
MCLK
= 12.288MHz
f
LRCLK
= 48kHz
A
V_SPKPGA
= +8dB
Z
SPK
= 4Ω + 33µH
TQFN PACKAGE
f
IN
= 6000Hz
f
IN
= 100Hz
f
IN
= 1000Hz
MAX98090 toc89
FREQUENCY (Hz)
THD+N RATIO (dB)
10k1k10010 100k
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-100
P
OUT
= 1.00W
P
OUT
= 0.25W
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (DAC TO SPEAKER)
V
SPK_VDD
= 5V
f
MCLK
= 12.288MHz
f
LRCLK
= 48kHz
A
V_SPKPGA
= +8dB
Z
SPK
= 8
I
+ 68µH
WLP PACKAGE
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4
THD+N RATIO (dB)
OUTPUT POWER (W)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (DAC TO SPEAKER)
MAX98090 toc88
V
SPKVDD
= 3V
f
MCLK
= 12.288MHz
f
LRCLK
= 48kHz
A
V_SPKPGA
= +8dB
Z
SPK
= 4Ω + 33µH
f
IN
= 6000Hz
f
IN
= 100Hz
f
IN
= 1000Hz
TQFN PACKAGE
MAX98090 toc90
FREQUENCY (Hz)
THD+N RATIO (dB)
10k1k10010 100k
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-100
P
OUT
= 0.76W
P
OUT
= 0.20W
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (DAC TO SPEAKER)
V
SPK_VDD
= 4.2V
f
MCLK
= 12.288MHz
f
LRCLK
= 48kHz
A
V_SPKPGA
= +8dB
Z
SPK
= 8I + 68µH
WLP PACKAGE