Electrical characteristics (continued) – Rainbow Electronics MAX98089 User Manual
Page 7
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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
MICROPHONE TO ADC PATH
Dynamic Range
DR
f
S
= 8kHz, MODE = 0 (IIR voice), AV
MICPRE_
= 0dB
(Note 4)
88
dB
Total Harmonic Distortion +
Noise
THD+N
V
IN
= 0.1V
P-P
, f
S
= 8kHz, f = 1kHz
-78
dB
AV
MICPRE_
= 0dB, V
IN
= 1V
P-P
, f = 1kHz
-85
AV
MICPRE_
= +30dB, V
IN
= 32mV
P-P
, f = 1kHz
-71
Common-Mode Rejection
Ratio
CMRR
V
IN
= 100mV
P-P
, f = 217Hz
74
dB
Power-Supply Rejection Ratio
PSRR
V
AVDD
= 1.65V to 1.95V, input referred,
MIC inputs floating
50
62
dB
f = 217Hz, V
RIPPLE
= 200mV
P-P
, input referred
62
f = 1kHz, V
RIPPLE
= 200mV
P-P
, input referred
62
f = 10kHz, V
RIPPLE
= 200mV
P-P
, input referred
55
Path Phase Delay
1kHz, 0dB input,
highpass filter disabled
measured from analog
input to digital output
MODE = 0 (IIR voice)
8kHz
2.2
ms
MODE = 0 (IIR voice)
16kHz
1.1
MODE = 1 (FIR audio)
8kHz
4.5
MODE = 1 (FIR audio)
48kHz
0.76
MICROPHONE PREAMP
Full-Scale Input
AV
MICPRE_
= 0dB
1.05
V
P-P
Preamplifier Gain
AV
MICPRE_
(Note 5)
PA1EN/PA2EN = 01
0
dB
PA1EN/PA2EN = 10
19.5
20
20.5
PA1EN/PA2EN = 11
29.5
30
30.5
PGA Gain
AV
MICPGA_
(Note 5)
PGAM1/PGAM2 = 0x00
19
20
21
dB
PGAM1/PGAM2 = 0x14
0
MIC Input Resistance
R
IN_MIC
All gain settings, measured at MIC1P/
MIC1N/MIC2P/MIC2N
50
kI