Datasheet

MAX98090 Ultra-Low Power Stereo Audio Codec
Maxim Integrated │ 56
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)
0
10
20
30
40
50
60
70
80
90
100
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
EFFICIENCY (%)
OUTPUT POWER PER CHANNEL (W)
EFFICIENCY vs. OUTPUT
POWER (DAC TO SPEAKER)
Z
SPK
= 4W + 33µH
MAX98090 toc109
V
SPKVDD
= 5V
f
MCLK
= 12.288MHz
f
LRCLK
= 48kHz
A
V_SPKPGA
= +8dB
TQFN PACKAGE
Z
SPK
= 8W + 68µH
0
10
20
30
40
50
60
70
80
90
100
0.0 0.5 1.0 1.5 2.0 2.5 3.0
EFFICIENCY (%)
OUTPUT POWER PER CHANNEL (W)
EFFICIENCY vs. OUTPUT
POWER (DAC TO SPEAKER)
Z
SPK
= 4W + 33µH
MAX98090 toc110
V
SPKVDD
= 4.2V
f
MCLK
= 12.288MHz
f
LRCLK
= 48kHz
A
V_SPKPGA
= +8dB
TQFN PACKAGE
Z
SPK
= 8W + 68µH
SUPPLY CURRENT vs. SUPPLY VOLTAGE
(DAC TO SPEAKER)
MAX98090 toc112
SUPPLY VOLTAGE (V)
2.5 5.5
SUPPLY CURRENT (mA)
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
0
5.0
4.54.03.53.0
f
MCLK
= 12.288MHz
f
LRCLK
= 48kHz
Z
SPK
= 8I + 68µH
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (DAC TO SPEAKER)
MAX98090 toc113
120
0
FREQUENCY (Hz)
10k1k10010 100k
PSRR (dB)
20
40
60
80
100
SPK_VDD
OTHER SUPPLIES
f
MCLK
= 12.288MHz
f
LRCLK
= 48kHz
V
RIPPLE
= 100mV
P-P
Z
SPK
= 8I + 68µH
0
10
20
30
40
50
60
70
80
90
100
0.0 0.3 0.5 0.8 1.0 1.3 1.5 1.8 2.0
EFFICIENCY (%)
OUTPUT POWER PER CHANNEL (W)
EFFICIENCY vs. OUTPUT
POWER (DAC TO SPEAKER)
Z
SPK
= 4W + 33µH
MAX98090 toc111
V
SPKVDD
= 3.7V
f
MCLK
= 12.288MHz
f
LRCLK
= 48kHz
A
V_SPKPGA
= +8dB
TQFN PACKAGE
Z
SPK
= 8W + 68µH
CROSSTALK vs. FREQUENCY
(DAC TO SPEAKER)
MAX98090 toc114
0
-120
FREQUENCY (Hz)
10k1k10010 100k
CROSSTALK (dB)
-100
-80
-60
-40
-20
RIGHT TO LEFT
LEFT TO RIGHT
f
MCLK
= 12.288MHz
f
LRCLK
= 48kHz
A
V_SPKPGA
= 0dB
Z
SPK
= 8I + 68µH
DAC PLAYBACK PATH INPUT TO SPEAKER OUTPUT (CONTINUED)