MAX9851 데이터 시트보기 (PDF) - Maxim Integrated
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MAX9851 Datasheet PDF : 71 Pages
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Stereo Audio CODECs with Microphone, DirectDrive
Headphones, Speaker Amplifiers, or Line Outputs
ELECTRICAL CHARACTERISTICS (continued)
(AVDD = CPVDD = +3V, DVDD = DVDDS2 = +1.8V, PVDD = +3.3V, RHP = 32Ω, ZSPK = 8Ω + 10µH, RREC = 32Ω, ROUTL+ to ROUTL- =
10kΩ, ROUTR+ to ROUTR- = 10kΩ, C1 = 0.22µF, C2 = CNREG = CPREG = CINTMICBIAS, CMBIAS = CREF = 1µF, MCLK = 13MHz, all
PGAs = 0dB, HP/REC volume = -20.0dB, SPK volume = -20.4dB, line output gain = -0.4dB, TA = TMIN to TMAX, unless otherwise
noted. Typical values are at TA = +25°C.) (See Functional Diagrams/Typical Operating Circuits).
PARAMETER
Total Harmonic Distortion Plus
Noise
SYMBOL
THD+N
CONDITIONS
fIN = 1kHz, fS = 8kHz, 0dBFS (voice mode
master mode, ADC and headphone output
enabled, no load), headphone volume =
+2.5dB
fIN = 1kHz, fS = 48kHz, 0dBFS (ADC and
headphone output enabled, no load),
headphone volume = +2.5dB
MIN TYP MAX UNITS
-71.5
dB
-84.5
fIN = 1kHz, fS = 8kHz and 16kHz (voice
75.5
modes), headphone volume = +2.5dB
Signal-to-Noise Ratio (Note 7)
SNR
dB
fIN = 1kHz, fS = 8kHz to 48kHz (stereo audio
modes), headphone volume = +2.5dB
88
Crosstalk
XTALK Driven channel at -1dBFS, fIN = 1kHz,
fS = 8kHz, headphone output (no load)
-95
dB
Power-Supply Rejection Ratio
PSRR
f = 217Hz, VRIPPLE = 100mVP-P
f = 10kHz, VRIPPLE = 100mVP-P
95
dB
68
DAC DIGITAL FILTERS
Passband Cutoff
fPD
0.44
fS
Passband Ripple
f < fPD
±0.2
dB
Stopband Cutoff
fSD
0.58
fS
Stopband Attenuation
f > fSD
60
dB
Attenuation at fS / 2
-6.02
dB
DAC VOICEBAND HIGHPASS FILTER (S1 Mono Voice Input Path, fS = 8kHz, Register 0x07 bit 4 = 1)
Passband Cutoff
fPH
175
Hz
Passband -3dB Cutoff
fP3_H
130
Hz
Passband Ripple
f > fPH
±0.2
dB
Stopband Cutoff
fSH
77
Hz
Stopband Attenuation
f < fSH
28
dB
DAC VOICEBAND HIGHPASS FILTER (S1 Mono Voice Input Path, fS = 16kHz, Register 0x07, bit 4 = 1)
Passband Cutoff
fPH
350
Hz
Passband -3dB Cutoff
fP3_H
260
Hz
Passband Ripple
f > fPH
±0.2
dB
Stopband Cutoff
fSH
154
Hz
Stopband Attenuation
f < fSH
28
dB
DAC VOICEBAND LOWPASS FILTER (S1 Mono Voice Input Path, fS = 8kHz)
Passband Cutoff
fPL
3500
Hz
Passband Ripple
f < fPL
±0.05
dB
Stopband Cutoff
fSL
3900
Hz
Stopband Attenuation
f > fSL
75
dB
_______________________________________________________________________________________ 5
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