AD6645(Rev0) Ver la hoja de datos (PDF) - Analog Devices

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AD6645
(Rev.:Rev0)

14-Bit, 80 MSPS A/D Converter

Analog Devices 

AD6645

EQUIVALENT CIRCUITS

VCH AVCC

AIN

BUF

VCL

VCH AVCC

500⍀

500⍀

BUF

AIN

BUF

T/H

VREF

T/H

VCL

Figure 2. Analog Input Stage

ENC

AVCC

AVCC

10k⍀

10k⍀

LOADS

AVCC

AVCC

10k⍀

10k⍀

ENC

LOADS

Figure 3. Encode Inputs

AVCC

VREF

AVCC

AVCC

CURRENT

MIRROR

C1, C2

Figure 4. Compensation Pin, C1 or C2

DVCC

CURRENT

MIRROR

DVCC

VREF

D0–D13,

OVR, DRY

CURRENT

MIRROR

Figure 5. Digital Output Stage

2.4V

AVCC

AVCC

VREF

100␮A

Figure 6. 2.4 V Reference

10k⍀

DVCC

10k⍀

DMID

Figure 7. DMID Reference

–8–

REV. 0

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