Datasheet

MAX98090 Ultra-Low Power Stereo Audio Codec
Maxim Integrated │ 55
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
500
1000
1500
2000
2500
2.5 3.0 3.5 4.0 4.5 5.0 5.5
OUTPUT POWER PER CHANNEL (mW)
SUPPLY VOLTAGE (V)
OUTPUT POWER vs. SUPPLY VOLTAGE
(DAC TO SPEAKER)
THD+N = 1%
MAX98090 toc103
f
MCLK
= 12.288MHz
f
LRCLK
= 48kHz
A
V_SPKPGA
= +8dB
Z
SPK
= 8Ω + 68µH
TQFN PACKAGE
THD+N = 10%
0
500
1000
1500
2000
2500
3000
3500
4000
4500
2.5 3.0 3.5 4.0 4.5 5.0 5.5
OUTPUT POWER PER CHANNEL (mW)
SUPPLY VOLTAGE (V)
OUTPUT POWER vs. SUPPLY VOLTAGE
(DAC TO SPEAKER)
THD+N = 1%
MAX98090 toc104
f
MCLK
= 12.288MHz
f
LRCLK
= 48kHz
A
V_SPKPGA
= +8dB
Z
SPK
= 4Ω + 68µH
TQFN PACKAGE
THD+N = 10%
3.02.52.01.51.00.5
EFFICIENCY vs. OUTPUT
POWER (DAC TO SPEAKER)
MAX98090 toc106
OUTPUT POWER PER CHANNEL (W)
EFFICIENCY (%)
10
20
30
40
50
60
70
80
90
100
0
0 3.5
V
SPK_VDD
= 5V
f
MCLK
= 12.288MHz
f
LRCLK
= 48kHz
A
V_SPKPGA
= +8dB
WLP PACKAGE
Z
SPK
= 4I + 33µH
Z
SPK
= 8I + 68µH
2.52.01.51.00.5
EFFICIENCY vs. OUTPUT
POWER (DAC TO SPEAKER)
MAX98090 toc107
OUTPUT POWER PER CHANNEL (W)
EFFICIENCY (%)
10
20
30
40
50
60
70
80
90
100
0
0 3.0
V
SPK_VDD
= 4.2V
f
MCLK
= 12.288MHz
f
LRCLK
= 48kHz
A
V_SPKPGA
= +8dB
WLP PACKAGE
Z
SPK
= 4I + 33µH
Z
SPK
= 8I + 68µH
FREQUENCY (Hz)
10k1k10010 100k
GAIN vs. FREQUENCY
(DAC TO SPEAKER)
MAX98090 toc105
NORMALIZED GAIN (dB)
-4
-3
-2
-1
0
1
2
3
4
5
-5
f
MCLK
= 12.288MHz
f
LRCLK
= 48kHz
A
V_SPKPGA
= 0dB
Z
SPK
= 8I + 68µH
DAC PLAYBACK PATH INPUT TO SPEAKER OUTPUT (CONTINUED)
1.751.501.251.000.750.500.25
EFFICIENCY vs. OUTPUT
POWER (DAC TO SPEAKER)
MAX98090 toc108
OUTPUT POWER PER CHANNEL (W)
EFFICIENCY (%)
10
20
30
40
50
60
70
80
90
100
0
0 2.00
V
SPK_VDD
= 3.7V
f
MCLK
= 12.288MHz
f
LRCLK
= 48kHz
A
V_SPKPGA
= +8dB
WLP PACKAGE
Z
SPK
= 4I + 33µH
Z
SPK
= 8I + 68µH