AD7829 datasheet(3/20 Pages) AD

Part #	AD7829

Description	3 V/5 V, 2 MSPS, 8-Bit, 1-, 4-, 8-Channel Sampling ADCs

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Parameter

Version B

Unit

Test Condition/Comment

CONVERSION RATE

Track/Hold Acquisition Time

200

ns max

See Functional Description Section

Conversion Time

420

ns max

POWER SUPPLY REJECTION

VDD

± 10%

±1

LSB max

POWER REQUIREMENTS

VDD

4.5

V min

5 V

± 10%. For Specified Performance

5.5

V max

VDD

2.7

V min

3 V

± 10%. For Specified Performance

3.3

V max

IDD

Normal Operation

12

mA max

8 mA Typically

Power-Down

5

µA max

Logic Inputs = 0 V or VDD

0.2

µA typ

Power Dissipation

VDD = 3 V

Normal Operation

36

mW max

Typically 24 mW

Power-Down

200 kSPS

9.58

mW typ

500 kSPS

23.94

mW typ

NOTES

1See Terminology section of this data sheet.

2Refer to the Analog Input section for an explanation of the Analog Input(s).

Specifications subject to change without notice.

ORDERING GUIDE

Linearity

Package

Model

Error

Description

Option

AD7822BN

±0.75 LSB

Plastic DIP

N-20

AD7822BR

±0.75 LSB

Small Outline IC

R-20

AD7822BRU

±0.75 LSB

Thin Shrink Small

RU-20

Outline (TSSOP)

AD7825BN

±0.75 LSB

Plastic DIP

N-24

AD7825BR

±0.75 LSB

Small Outline IC

R-24

AD7825BRU

±0.75 LSB

Thin Shrink Small

RU-24

Outline (TSSOP)

AD7829BN

±0.75 LSB

Plastic DIP

N-28

AD7829BR

±0.75 LSB

Small Outline IC

R-28

AD7829BRU

±0.75 LSB

Thin Shrink Small

RU-28

Outline (TSSOP)

2.1V

IOL

200 A

IOH

TO

OUTPUT

CL

50pF

Figure 1. Load Circuit for Access Time and Bus

Relinquish Time

AD7822/AD7825/AD7829

–3–

REV. B

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