MAX9851ETM(2006) 데이터 시트보기 (PDF) - Maxim Integrated

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MAX9851ETM
(Rev.:2006)

Stereo Audio CODECs with Microphone, DirectDrive Headphones, Speaker Amplifiers, or Line Outputs

Maxim Integrated 

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

SYMBOL

CONDITIONS

DAC VOICEBAND LOWPASS FILTER (S1 Mono Voice Audio Input Path, fS = 16kHz)

Stopband Cutoff

Passband Ripple

fPL

f < fPL

Stopband Cutoff

fSL

Stopband Attenuation

f > fSL

DAC ADJUSTABLE HIGHPASS FILTER

DC Attenuation

DCATT

Register 0x07 bits [3:0] = 0x5, 0xA, or 0xF

Register 0x07 [3:0] = 0x5

Highpass Cutoff (-3dB)

fP

Register 0x07 [3:0] = 0xA

Register 0x07 [3:0] = 0xF

DAC INPUT GAIN CONTROL (Register 0x0C and 0x0D)

Gain Control Range

For both input data interfaces

ADC DC ACCURACY

Gain Error

Full-Scale Conversion

0dBFS fIN = 1kHz, line input, PGA = 0dB

Channel Gain Matching

ADC DYNAMIC SPECIFICATIONS (Note 8)

MIN TYP MAX UNITS

7000

75

Hz

±0.05 dB

7800

Hz

dB

90

dB

55

91

171

279

Hz

327

533

-96

0

dB

±1

±7

2.05

±1

%

VP-P

%

BW = 22Hz to fS / 2 (8kHz voice modes)

73

75

Dynamic Range (Note 6)

DR

BW = 22Hz to 20kHz TA = +25°C

77

82

dB

(48kHz stereo audio

modes, A-weighted) TA = TMIN to TMAX

71

Total Harmonic Distortion

Signal-to-Noise Ratio

THD

SNR

BW = 22Hz to fS / 2 (8kHz audio mode)

1kHz, 0dBFS, fS = 8kHz (voice mode)

1kHz, 0dBFS, fS = 48kHz (stereo audio

mode)

1kHz, 0dBFS, fS = 8kHz (voice mode)

1kHz, 0dBFS, fS = 48kHz (stereo audio

mode, A-weighted)

1kHz, 0dBFS, fS = 8kHz (stereo audio

mode, A-weighted)

-85.5

-85.5

dB

-85.5

75

81.5

dB

87.5

Channel Crosstalk

Driven channel at -1dBFS, fIN = 1kHz, fS =

48kHz (from MICL to ADCR or MICR to

-75

dB

ADCL)

Power-Supply Rejection Ratio

(Note 9)

PSRR

AVDD = 2.6V to 3.3V

f = 217Hz, VRIPPLE = 100mVP-P

f = 10kHz, VRIPPLE = 100mVP-P

48

63

63

dB

50

6 _______________________________________________________________________________________

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