AD1988B 데이터 시트보기 (PDF) - Analog Devices

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AD1988B

High Definition Audio SoundMAX® Codec

Analog Devices 

AD1988A/AD1988B

Parameter

ANALOG LINE LEVEL OUTPUTS

Full-Scale Output Voltage

PORT-C, PORT-E, PORT-F, PORT-G, PORT-H, and

MONO_OUT

Output Impedance1

External Total Load Impedance

Output Capacitance1

External Load Capacitance1

Total Harmonic Distortion (THD+N)1

Dynamic Range1

ANALOG HP DRIVE OUTPUTS

Full-Scale Output Voltage

PORT-A, PORT-B, and PORT-D

Output Impedance1

External Load Impedance1

Output Capacitance1

External Load Capacitance1

Total Harmonic Distortion (THD+N)1

Dynamic Range1

ANALOG INPUTS

PORT-G, PORT-H, or CD

Conditions/Comments

Line out drive enabled

When ports are used as line level outputs

−60 dB reference to fS A-weighted

Output drive enabled

When ports are used as outputs

10 kΩ load

32 Ω load

−60 dB reference to fS A-weighted, 10 kΩ or

32 Ω loads

When ports are used as inputs

Microphone Boost Amplifiers

PORT-A, PORT-B, PORT-C, PORT-D, PORT-E, or PORT-F 0 dB boost

+10 dB boost

+20 dB boost

+30 dB boost

Input Impedance1

PCBEEP

PORT-G, PORT-H

All others (with 0 dB boost)

Input Capacitance1

ANALOG INPUT PERFORMANCE

Total Harmonic Distortion Plus Noise (THD+N)1

Dynamic Range

Signal-to-Noise Ratio (SNR)2

STATIC DIGITAL SPECIFICATIONS

Digital I/O (DVIO)

VIH

VIL

VOH

VOL

−60 dB in reference to fS A-weighted

DVIO @ 3.3 V ± 10%

Typ

AD1988A/

Min AD1988B Max Unit

1.0

V rms3

2.83

V p-p

300

Ω

10

kΩ

15

pF

1000 pF

−85/−85

dB

+95/+101

dB

1.0

2.83

0.5

32

15

1000

−83/−84

−83/−84

+95/+101

V rms3

V p-p

Ω

Ω

pF

pF

dB

dB

dB

1

V rms3

2.83

V p-p

1

2.83

0.316

0.894

0.1

0.283

0.032

0.089

V rms3

V p-p

V rms3

V p-p

V rms3

V p-p

V rms3

V p-p

23

kΩ

60

kΩ

150

kΩ

5

7.5 pF

−81/−82

dB

+90/+92

dB

+90/+92

dB

2.97 3.3

2.0

0.8

2.4

0.6

3.63 V

V

V

V

V

Rev. 0 | Page 5 of 20

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