MAX9880A 데이터 시트보기 (PDF) - Maxim Integrated
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MAX9880A Datasheet PDF : 70 Pages
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Low-Power, High-Performance
Dual I2S Stereo Audio Codec
ELECTRICAL CHARACTERISTICS (continued)
(VAVDD = VPVDD = VMICVDD = VDVDD = VDVDDS1 = +1.8V, RL = ∞, headphone load (RL) connected between _OUTP and _OUTN, dif-
ferential modes, CREF = 2.2µF, CMICBIAS = CPREG = CREG = 1µF, AVPRE = +20dB, AVPGAM = 0dB, AVDAC = 0dB, AVLINE = +20dB,
AVVOL = 0dB, AVLO = 0dB, fMCLK = 13MHz, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MICROPHONE AMPLIFIER
PALEN/PAREN = 01
Preamplifier Gain
AVPRE PALEN/PAREN = 10
PALEN/PAREN = 11
MIC PGA Gain
PGAML/PGAMR = 0x1F
AVPGAM
PGAML/PGAMR = 0x00
Common-Mode
Rejection Ratio
CMRR VIN = 100mVP-P, f = 217Hz
MIC Input Resistance RIN_MIC All gain settings
Total Harmonic
Distortion + Noise
THD+N
AVPRE = 0dB
VIN = 1VP-P, f = 1kHz, A-weighted
AVPRE = +30dB
VIN = 32mVP-P, f = 1kHz, A-weighted
VAVDD = 1.65V to 1.95V, input referred
Power-Supply Rejection
Ratio
PSRR
f = 217Hz, VRIPPLE = 100mV, AVADC = 0dB, input
referred
f = 1kHz, VRIPPLE = 100mV, AVADC = 0dB, input
referred
MIN
TYP MAX UNITS
-0.5
0
+0.5
19.5
20
20.5
dB
29.3
30
30.5
-0.5
0
+0.6
dB
19.3
19.9 20.4
50
dB
30
50
k
-80
dB
-65
60
80
80
dB
78
f = 10kHz, VRIPPLE = 100mV, AVADC = 0dB, input
referred
MICROPHONE BIAS
MICBIAS Output Voltage
Load Regulation
Line Regulation
Power-Supply Rejection
Ratio
Noise Voltage
VMICBIAS
PSRR
ILOAD = 1mA
VMICVDD = 1.8V, MBIAS = 0
VMICVDD = 3V, MBIAS = 0
ILOAD = 1mA to 2mA, MBIAS = 0
VAVDD = 1.8V, VMICVDD = 1.65V to 1.95V, MBIAS = 0
f = 217Hz, VRIPPLE = 100mVP-P
f = 10kHz, VRIPPLE = 100mVP-P
A-weighted
LINE INPUT
Full-Scale Input
VIN AVLINE = 0dB
LIGL/LIGR = 0x00
LIGL/LIGR = 0x01
Line Input Level Adjust
AVLINE LIGL/LIGR = 0x02
LIGL/LIGR = 0x04
LIGL/LIGR = 0x08
1.48
2.15
22.8
20.7
18.9
14.9
6.9
72
1.52
2.2
0.6
1.55
100
90
9.5
1.0
23.9
21.9
20
16
8
1.56
2.25
10
V
V/A
mV/V
dB
µVRMS
24.9
22.9
20.9
16.9
8.9
VP-P
dB
8 _______________________________________________________________________________________
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