MAX9880A 查看數據表（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
MIN
DVFLT = 0x1
(Elliptical tuned for 16kHz GSM + 217Hz notch)
5th-Order Stopband
Cutoff
(-30dB from Peak,
I2C Register
Programmable)
fDHPSB
DVFLT = 0x2
(500Hz Butterworth tuned for 16kHz)
DVFLT = 0x3
(Elliptical tuned for 8kHz GSM + 217Hz notch)
DVFLT = 0x4
(500Hz Butterworth tuned for 8kHz)
DVFLT = 0x5
(fS/240 Butterworth)
DC Attenuation
DCATTEN DVFLT not equal to 000
DAC STEREO AUDIO MODE DIGITAL FIR LOWPASS FILTER (DHF = 0 for fLRCLK < 50kHz)
With respect to fS within ripple; fS = 8kHz to 48kHz
Passband Cutoff
fPLP -3dB cutoff
-6.02dB cutoff
Passband Ripple
f < fPLP
Stopband Cutoff
fSLP
With respect to fS; fS = 8kHz to 48kHz; f = 0.58 fS
to 7.42 fS
Stopband Attenuation
f > fSLP
60
DAC STEREO AUDIO MODE DIGITAL FIR LOWPASS FILTER (DHF = 1 for fLRCLK > 50kHz)
Passband Cutoff
Ripple limit cutoff
fPLP
-3dB cutoff
Passband Ripple
f < fPLP
Stopband Cutoff
fSLP With respect to fS; f = 0.5 fS to 3.5 fS
Stopband Attenuation
f > fSLP
60
DAC STEREO AUDIO MODE DIGITAL DC-BLOCKING HIGHPASS FILTER
Passband Cutoff
(-3dB from Peak)
fDHPPB DVFLT = 0x1 (DAI1), DCB = 1 (DAI2)
DC Attenuation
ADC (Note 6)
DCATTEN DVFLT = 0x1 (DAI1), DCB = 1 (DAI2)
Dynamic Range
(Note 5)
Full-Scale Input
DR
fS = 8kHz, MODE = 0 (IIR voice), TA = +25°C
72
fS = 8kHz to 48kHz, MODE = 1 (FIR audio) (Note 7)
Differential MIC input or stereo line inputs,
AVPRE = 0dB, AVPGAM = 0dB
Gain Error (Note 7)
DC accuracy, measured with respect to 80% of full-
scale output
Voice Path Phase Delay
1kHz, 0dB input, highpass
filter disabled measured from
analog input to digital output;
MODE = 0 (IIR voice)
fS = 8kHz
fS = 16kHz
TYP
0.0139 x
fS
0.0156 x
fS
0.0279 x
fS
0.0312 x
fS
0.0021 x
fS
90
MAX
0.43 x fS
0.47 x fS
0.50 x fS
±0.1
0.58 x fS
0.24 x fS
0.33 x fS
±0.1
0.5 x fS
0.000625 x
fS
90
82
84
1
1
5
1.2
0.61
UNITS
Hz
dB
Hz
dB
Hz
dB
Hz
dB
Hz
dB
Hz
dB
dB
VP-P
%
ms
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