Datasheet
Maxim Integrated
│
13
MAX98090 Ultra-Low Power Stereo Audio Codec
www.maximintegrated.com
Electrical 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
) connected
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)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Line Input Level Adjust Gain (PGA) A
V_LINEPGA
(Note 6)
PGALIN = 0x0 18 20 21.5
dB
PGALIN = 0x1 13 14 15
PGALIN = 0x2 2 3 4
PGALIN = 0x3 -1 0 +1
PGALIN = 0x4 -4 -3 -2
PGALIN = 0x5,
0x6, 0x7
-7 -6 -5
Line Input Amplier Gain A
V_LINEAMP
Single-ended only 6 dB
Input Resistance R
IN
14 20 kΩ
Feedback Resistance R
IN_FB
T
A
= +25°C 19 20 21 kΩ
DIGITAL LOOP-THROUGH: RECORD OUTPUT TO PLAYBACK INPUT PATH
Dynamic Range (Note 5) DR
f
S
= 48kHz, f
MCLK
= 12.288MHz, MODE =
1 (FIR audio)
97 dB
Total Harmonic Distortion + Noise THD+N
f
IN
= 1kHz, f
S
= 48kHz, f
MCLK
=
12.288MHz, MODE = 1 (FIR audio)
-83 -72 dB
DAC PLAYBACK PATH TO RECEIVER AMPLIFIER PATH
Dynamic Range (Note 5) DR f
S
= 48kHz, f
MCLK
= 12.288MHz 100 dB
Total Harmonic Distortion + Noise THD+N
f = 1kHz, P
OUT
= 20mW,
R
REC
= 32W
-68 -58 dB
DIFFERENTIAL ANALOG INPUT TO RECEIVER AMPLIFIER PATH
Dynamic Range (Note 5) DR 90 96 dB
Total Harmonic Distortion + Noise THD+N -71 dB
Power-Supply Rejection Ratio
(Note 3)
PSRR
V
SPKLVDD
= 2.8V to 5.5V 68.4 80
dB
V
RIPPLE
= 100mV
P-P
f = 217Hz 77
f = 1kHz 77
f = 10kHz 69
RECEIVER AMPLIFIER (Note 7)
Output Power P
OUT
R
REC
= 32W, f = 1kHz, THD < 1%, BIAS_
MODE = 0
97
mW
R
REC
= 32W, f = 1kHz, THD < 1%, BIAS_
MODE = 1
74
Full-Scale Output A
V_RECPGA
= 0dB (Note 8) 1 V
RMS
Receiver Volume Control (PGA) A
V_RECPGA
(Notes 6 and 9)
RCVLVOL = 0x00 -63 -61 -59.5
dB
RCVLVOL = 0x1F +7.2 +8 +8.75