AD6644 데이터 시트보기 (PDF) - Analog Devices

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AD6644

14-Bit, 40 MSPS/65 MSPS Analog-to-Digital Converter

Analog Devices 

AD6644

EQUIVALENT CIRCUITS

VCH AVCC

AIN

BUF

VCL

VCH AVCC

500Ω

500Ω

BUF

AIN

BUF

TH

VREF

TH

VCL

Figure 21. Analog Input Stage

ENCODE

AVCC

AVCC

10kΩ

10kΩ

LOADS

AVCC

AVCC

10kΩ

10kΩ

ENCODE

LOADS

Figure 22. ENCODE/ENCODE Inputs

AVCC

VREF

AVCC

AVCC

CURRENT

MIRROR

C1 OR C2

Figure 23. Compensation Pin, C1 or C2

2.4V

AVCC

AVCC

100µA

VREF

Figure 24. 2.4 V Reference

10kΩ

DVCC

DMID

10kΩ

Figure 25. DMID Reference

DVCC

CURRENT

MIRROR

DVCC

VREF

D0 TO D13,

OVR, DRY

Rev. D | Page 12 of 24

CURRENT

MIRROR

Figure 26. Digital Output Stage

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