Rainbow Electronics MAX98088 - Manual (Page 8)

Stereo Audio Codec
with FLEXSOUND Technology
MAX98088
8
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 LOAD ) connected from LOUTL and LOUTR to ground. 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 = 1. T A = +25NC, unless otherwise noted.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
MICROPHONE BIAS
MICBIAS Output Voltage
V MICBIAS I LOAD = 1mA 2.15 2.2 2.25 V
Load Regulation I
LOAD
= 1mA to 2mA 0.5 4.5 mV
Line Regulation V SPKLVDD = 2.8V to 5.5V 110 F V
Ripple Rejection
f = 217Hz, V RIPPLE (SPKLVDD) = 100mV P-P 92
dB
f = 10kHz, V RIPPLE (SPKLVDD) = 100mV P-P 83
Noise Voltage
A-weighted, f = 20Hz to 20kHz 3.9
F
V
RMS
P-weighted, f = 20Hz to 4kHz 2.1
f = 1kHz 50 nV/√Hz
MICROPHONE BYPASS SWITCH
On-Resistance R ON
I MIC1_ = 100mA, INABYP = MIC2BYP = 1,
V
MIC2_
= V
INA_
= 0V, AVDD, T
A
= +25NC
5 30 I
Total Harmonic Distortion
+ Noise
THD+N
V IN = 2V P-P , V CM = 0.9V, R L = 10kI,
f = 1kHz, INABYP = MIC2BYP = 1
-80 dB
Off-Isolation V IN = 2V P-P , V CM = 0.9V, R L = 10kI, f = 1kHz 60 dB
Off-Leakage Current
V MIC1_ = [0V, AVDD], V MIC2_ /V INA_ =
[AVDD, 0V]
-1 +1 F A
LINE INPUT TO ADC PATH
Dynamic Range (Note 4) DR
INA pin direct, f S = 48kHz, MODE = 1
(FIR audio)
93 dB
Total Harmonic Distortion
+ Noise
THD+N V
IN
= 1V
P-P
, f = 1kHz 82 74 dB
Gain Error DC accuracy 1 %
Power-Supply Rejection
Ratio
PSRR
V
AVDD
= 1.65V to 1.95V, input referred,
line inputs floating
57 68
dB
f = 217Hz, V RIPPLE = 100mV P-P ,
AV ADC = 0dB, input referred
72
f = 1kHz, V RIPPLE = 100mV P-P ,
AV ADC = 0dB, input referred
70
f = 10kHz, V RIPPLE = 100mV P-P ,
AV ADC = 0dB, input referred
60