User Manual

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MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
ELECTRICAL CHARACTERISTICS (continued)
(V
AVDD
= V
PVDD
= V
DVDD
= V
DVDDS1
= V
DVDDS2
= 1.8V, V
SPKLVDD
= V
SPKRVDD
= 3.7V. Speaker loads (Z
SPK
) connected between
SPK_P and SPK_N. Receiver load (R
REC
) connected between RECP and RECN. Headphone loads (R
HP
) connected from HPL or HPR
to HPGND. Line out loads (R
LOUT
) connected from LOUTL or LOUTR to SPKLGND. R
LOAD
= R
HP
= J, R
REC
= J, Z
SPK
= J, C
REF
=
2.2FF, C
MICBIAS
= C
REG
= 1FF, C
C1N-C1P
= 1FF, C
HPVDD
= C
HPVSS
= 1FF. AV
MICPRE_
= +20dB, AV
MICPGA_
= 0dB, AV
DACATTN
=
0dB, AV
DACGAIN
= 0dB, AV
ADCLVL
= 0dB, AV
ADCGAIN
= 0dB, AV
PGAIN_
= 0dB, AV
HP_
= 0dB, AV
REC
= 0dB, AV
SPK_
= 0dB, MCLK
= 12.288MHz, LRCLK = 48kHz, MAS = 0. T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25NC.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
STEREO AUDIO MODE FIR LOWPASS FILTER (MODE1 = 1, DHF1/DHF2 = 1 for LRCLK > 50kHz)
Passband Cutoff f
PLP
Ripple limit cutoff 0.24 x f
S
Hz
-3dB cutoff 0.31 x f
S
Passband Ripple f < f
PLP
-0.1 +0.1 dB
Stopband Cutoff f
SLP
0.477 x f
S
Hz
Stopband Attenuation
(Note 6)
f < f
SLP
60 dB
STEREO AUDIO MODE DC BLOCKING HIGHPASS FILTER
Passband Cutoff
(-3dB from Peak)
f
DHPPB
DVFLT ≠ 000 (DAI1), DCB2 = 1 (DAI2)
0.000104
x f
S
Hz
DC Attenuation DC
ATTEN
DVFLT ≠ 000 (DAI1), DCB2 = 1 (DAI2)
90 dB
AUTOMATIC LEVEL CONTROL
Dual Band Lowpass Corner
Frequency
ALCMB = 1 5 kHz
Dual Band Highpass Corner
Frequency
ALCMB = 1 5 kHz
Gain Range 0 12 dB
Low-Signal Threshold ALCTH = 111 to 001 -48 -12 dBFS
Release Time
ALCRLS = 101 0.25
s
ALCRLS = 000 8
PARAMETRIC EQUALIZER
Number of Bands 5 Bands
Per Band Gain Range -12 +12 dB
Preattenuator Gain Range (Note 5) -15 0 dB
Preattenuator Step Size 1 dB
DAC TO RECEIVER AMPLIFIER PATH
Dynamic Range DR f
S
= 48kHz, f = 1kHz (Note 4) 96 dB
Total Harmonic Distortion +
Noise
THD+N
f = 1kHz, P
OUT
= 15mW, R
REC
= 32I
-70 -63 dB
Power-Supply Rejection Ratio PSRR
V
SPKLVDD
= 2.8V to 5.5V, T
A
= +25NC
64 75
dB
f = 217Hz, V
RIPPLE
= 200mV
P-P
80
f = 1kHz, V
RIPPLE
= 200mV
P-P
80
f = 10kHz, V
RIPPLE
= 200mV
P-P
77
Click-and-Pop Level K
CP
Peak voltage, A-weighted, 32
samples per second, AV
REC
=
0dB
Into shutdown -68
dBV
Out of shutdown -72