Datasheet
Maxim Integrated
│
11
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
REF Voltage 1.25 V
BIAS Voltage
BIAS from resistive division (BIAS_MODE
= 0)
0.90
V
BIAS from bandgap
(BIAS_MODE = 1)
0.78
Shutdown Supply Current (Note 4) T
A
= +25°C
Analog 1 10
µA
Speaker 1 5
Digital 2.1 20
Shutdown to Full Operation 10 ms
DIFFERENTIAL INPUT (ANALOG MICROPHONE) TO ADC RECORD PATH
Dynamic Range (Note 5) DR
f
S
= 48kHz, MODE = 1 (FIR audio),
A-weighting lter applied
97 dB
f
S
= 8kHz, MODE = 0 (IIR voice),
A-weighting lter applied
90 96 dB
Total Harmonic Distortion + Noise THD+N
A
V_MICPRE
= 20dB, V
IN
= 90mV
RMS
,
f = 1kHz,
-82 -75
dB
AV_MICPRE
= 0dB, V
IN
= 900mV
RMS
,
f = 1kHz
-91
A
V_MICPRE
= 30dB,
V
IN
= 28.5mV
RMS
, f = 1kHz
-73
Common-Mode Rejection Ratio CMRR f = 217Hz, V
IN_CM
= 100mV
P-P
59 dB
Power-Supply Rejection Ratio
(Note 3)
PSRR
V
AVDD
= 1.65V to 2.0V,
input referred
40 57
dB
V
RIPPLE
= 100mV
P-P
,
input referred
f = 217Hz 60
f = 1kHz 60
f = 10kHz 59
Path Phase Delay
1kHz, 0dB input,
highpass lter disabled
measured from analog
input to digital output
MODE = 0
(voice) 8kHz
2.2
ms
MODE = 0
(voice) 16kHz
1.1
MODE = 1
(music) 8kHz
4.5
MODE = 1
(music) 48kHz
0.8