AD9012AQ 데이터 시트보기 (PDF) - Analog Devices

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AD9012AQ

High Speed 8-Bit TTL A/D Converter

Analog Devices 

AD9012

LINEARITY OUTPUT

(ERROR WAVEFORM)

RECONSTRUCTED

OUTPUT

ANALOG

INPUT

(2V p-p MAX)

TTL

ENCODE

INPUT

50⍀

50⍀

100⍀

82⍀

2N3906

1N747

500⍀

430⍀

430⍀

AD642

100⍀

–5.2V

AD642

160⍀

2N3906

AD741 10⍀

240⍀ 100⍀ 240⍀

0.01␮F 0.1␮F

50⍀

NOTE:

10124, ECL OUTPUTS,

SHOULD BE TERMINATED

TO –2V WITH

100⍀ REGISTERS.

37.5⍀

AD9768

0.1␮F 0.1␮F

–VREF REFMID +VREF

10124 10124

HOS200

EQUAL

DISTANCE

1k⍀

–5.2V

560⍀

0.1␮F

0.01␮F

OVERFLOW

AIN

D8 (MSB)

D7

AIN AD9012

D6

D5

ENCODE

D4

OVERFLOW

D3

INH

D2

HYSTERESIS D1 (LSB)

+5.0V –5.2V

LATCH

74AS843

CLK

0.1␮F

0.1␮F 0.01␮F

1k⍀

25 PIN

D

CONNECTOR

1k⍀

74AS04

Figure 6. Evaluation Circuit

70

65

SECOND HARMONIC

60

55

THIRD HARMONIC

50

45

SNR*

40

*WITH HARMONICS

35 INPUT = 0.1dB BELOW FULL SCALE

ENCODE RATE = 75MSPS

30

1

10

100

ANALOG INPUT FREQUENCY – MHz

Figure 7. Dynamic Performance

REV. F

–7–

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