MAX9867 데이터 시트보기 (PDF) - Maxim Integrated
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MAX9867 Datasheet PDF : 55 Pages
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Ultra-Low Power Stereo Audio Codec
ELECTRICAL CHARACTERISTICS (continued)
(VAVDD = VPVDD = VDVDD = VDVDDIO = +1.8V, RL = ∞, headphone load (RL) connected between _OUTP and _OUTN in differential
mode, CREF = 2.2µF, CMICBIAS = CPREG = CREG = 1µF, AVPRE = +20dB, AVPGAM = 0dB, AVDAC = 0dB, AVLINE = +20dB, AVVOL =
0dB, MCLK = 13MHz, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
DAC STEREO AUDIO MODE DIGITAL DC BLOCKING HIGHPASS FILTER
Passband Cutoff
(-3dB from Peak)
fDHPPB DVFLT = 0x1
DC Attenuation
ADC (Note 6)
Dynamic Range (Note 5)
Full-Scale Input
DCATTEN DVFLT = 0x1
DR
fS = 8kHz, MODE = 0 (IIR voice)
fS = 8kHz to 48kHz, MODE = 1 (FIR audio)
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
MIN TYP MAX UNITS
0.000625
x fS
90
75
84
85
1
1
5
Hz
dB
dB
VP-P
%
Voice Path Phase Delay
PDLY
f = 1kHz, 0dBFS, HP
filter disabled,
analog input to
digital output
fS = 8kHz
fS = 16kHz
1.2
ms
0.61
Total Harmonic Distortion
ADC Level Adjust Range
THD
AVADC
f = 1kHz, fS = 8kHz, TA = +25°C, 0dBFS
AVL/AVR = 0xF to 0x0
VAVDD = 1.65V to 1.95V, input referred
-81
-70
dB
-12
+3
dB
60
85
f = 217Hz, VRIPPLE = 100mV, AVADC = 0dB,
85
input referred
Power-Supply Rejection Ratio
PSRR f = 1kHz, VRIPPLE = 100mV, AVADC = 0dB,
80
dB
input referred
f = 10kHz, VRIPPLE = 100mV, AVADC = 0dB,
80
input referred
ADC VOICE MODE DIGITAL IIR LOWPASS FILTER
Passband Cutoff
Passband Ripple
Stopband Cutoff
Stopband Attenuation
With respect to fS within ripple;
fS = 8kHz to 48kHz
fPLP
-3dB cutoff
0.445 x
fS
Hz
0.449 x
fS
f < fPLP
±0.1
dB
fSLP With respect to fS; fS = 8kHz to 48kHz
0.469 x
fS
Hz
f > fSLP, f = 20Hz to 20kHz
74
dB
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