AD1888 데이터 시트보기 (PDF) - Analog Devices

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AD1888

AC ’97 SoundMAX® Codec

Analog Devices 

AD1888–SPECIFICATIONS

STANDARD TEST CONDITIONS, UNLESS OTHERWISE

NOTED

Temperature

25°C

Digital Supply (DVDD)

Analog Supply (AVDD)

Sample Rate (fS)

Input Signal

3.3 V

5.0 V

48 kHz

1 kHz

Analog Output Pass Band

20 Hz to 20 kHz

DAC Test Conditions

Calibrated

–3 dB Attenuation Relative to Full Scale

0 dB Input

10 kΩ Output Load LINE_OUT, MONO_OUT,

CENTER_OUT, and LFE_OUT

32 Ω Output Load (HP_OUT)

ADC Test Conditions

Calibrated

0 dB Gain

Input –3.0 dB Relative to Full Scale

Parameter

ANALOG INPUT

Input Voltage (RMS Values Assume Sine Wave Input)

LINE_IN, CD, AUX, PHONE_IN

MIC_IN with 30 dB Preamp

MIC_IN with 20 dB Preamp

MIC_IN with 10 dB Preamp

MIC_IN with 0 dB Gain

Input Impedance*

Input Capacitance*

MASTER VOLUME

Step Size (Line Out, Mono Out, Surround Out, Center, LFE)

Output Attenuation Range Span*

Mute Attenuation of 0 dB Fundamental*

PROGRAMMABLE GAIN AMPLIFIER—ADC

Step Size (0 dB to 22.5 dB)

PGA Gain Range Span

ANALOG MIXER—INPUT GAIN/AMPLIFIERS/ATTENUATORS

Signal-to-Noise Ratio (SNR)

CD to LINE_OUT

LINE, AUX, or PHONE to LINE_OUT*

MIC1 or MIC2 (Note: MIC Gain of 0 dB) to LINE_OUT*

Step Size All Mixer Inputs

Input Gain/Attenuation Range: All Mixer Inputs

DIGITAL DECIMATION AND INTERPOLATION FILTERS*

Pass Band

Pass-Band Ripple

Transition Band

Stop Band

Stop-Band Rejection

Group Delay

Group Delay Variation over Pass Band

Min

0

0.4 ϫ fS

0.6 ϫ fS

–74

Typ

Max

1

2.83

0.032

0.089

0.1

0.283

0.316

0.894

1

2.83

20

5

7.5

1.5

46.5

80

1.5

22.5

90

90

90

1.5

46.5

16/fS

0

0.4 ϫ fS

± 0.09

0.6 ϫ fS

ϱ

Unit

V rms

V p-p

V rms

V p-p

V rms

V p-p

V rms

V p-p

V rms

V p-p

kΩ

pF

dB

dB

dB

dB

dB

dB

dB

dB

dB

dB

Hz

dB

Hz

Hz

dB

sec

µs

–2–

REV. 0

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