MAX9880A 查看數據表（PDF） - Maxim Integrated

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MAX9880A

Low-Power, High-Performance Dual I2S Stereo Audio Codec

Maxim Integrated 

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

DAC (Note 4)

Dynamic Range

(Note 5)

Full-Scale Output

Gain Error

SYMBOL

CONDITIONS

MIN

DR

fS = 48kHz, AVVOL = 0dB,

TA = +25°C

Master or slave mode

Slave mode

88

Differential mode

Capacitorless and single-ended modes

DC accuracy, measured with respect to full-scale

output

TYP MAX UNITS

96

1

0.56

1

dB

VRMS

5

%

Voice Path Phase Delay

PDLY

1kHz, 0dB input, highpass

filter disabled measured from

digital input to analog output;

MODE = 0 (IIR voice)

fS = 8kHz

fS = 16kHz

1.2

ms

0.59

Total Harmonic

Distortion

THD

fMCLK = 12.288MHz, fS = 48kHz, 0dBFS, measured

at headphone outputs

-75

dB

DAC Attenuation Range AVDAC VDACA/SDACA = 0xF to 0x0

DAC Gain Adjust

AVGAIN VDACG = 00 to 11

VAVDD = VPVDD = 1.65V to 1.95V

Power-Supply Rejection

Ratio

PSRR

f = 217Hz, VRIPPLE = 100mVP-P, AVVOL = 0dB

f = 1kHz, VRIPPLE = 100mVP-P, AVVOL = 0dB

f = 10kHz, VRIPPLE = 100mVP-P, AVVOL = 0dB

DAC VOICE MODE DIGITAL IIR LOWPASS FILTER (6x Interpolation)

-15

0

dB

0

+18

dB

85

85

dB

80

74

Passband Cutoff

fPLP With respect to fS within ripple; fS = 8kHz to 48kHz

0.448 x fS

Hz

-3dB cutoff

0.451 x fS

Passband Ripple

f < fPLP

±0.1

dB

Stopband Cutoff

fSLP With respect to fS; fS = 8kHz to 48kHz

0.476 x fS

Hz

Stopband Attenuation

f > fSLP, f = 20Hz to 20kHz

75

dB

DAC VOICE MODE DIGITAL 5th-ORDER IIR HIGHPASS FILTER

DVFLT = 0x1

(Elliptical tuned for 16kHz GSM + 217Hz notch)

0.0161 x

fS

5th-Order Passband

Cutoff

(-3dB from Peak,

I2C Register

Programmable)

fDHPPB

DVFLT = 0x2

(500Hz Butterworth tuned for 16kHz)

DVFLT = 0x3

(Elliptical tuned for 8kHz GSM + 217Hz notch)

DVFLT = 0x4

(500Hz Butterworth tuned for 8kHz)

0.0312 x

fS

0.0321 x

Hz

fS

0.0625 x

fS

DVFLT = 0x5

(fS/240 Butterworth)

0.0042 x

fS

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