AD7822 查看數據表（PDF） - Analog Devices

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产品描述 (功能)

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AD7822

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

Analog Devices 

Parameter

Version B

Unit

CONVERSION RATE

Track/Hold Acquisition Time

200

Conversion Time

420

ns max

ns max

POWER SUPPLY REJECTION

VDD ± 10%

POWER REQUIREMENTS

VDD

VDD

IDD

Normal Operation

Power-Down

Power Dissipation

Normal Operation

Power-Down

200 kSPS

500 kSPS

±1

4.5

5.5

2.7

3.3

12

5

0.2

36

9.58

23.94

LSB max

V min

V max

V min

V max

mA max

µA max

µA typ

mW max

mW typ

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.

AD7822/AD7825/AD7829

Test Condition/Comment

See Functional Description Section

5 V ± 10%. For Specified Performance

3 V ± 10%. For Specified Performance

8 mA Typically

Logic Inputs = 0 V or VDD

VDD = 3 V

Typically 24 mW

200␮A IOL

TO

OUTPUT

PIN

CL

50pF

200␮A IOH

2.1V

Figure 1. Load Circuit for Access Time and Bus

Relinquish Time

ORDERING GUIDE

Model

AD7822BN

AD7822BR

AD7822BRU

AD7825BN

AD7825BR

AD7825BRU

AD7829BN

AD7829BR

AD7829BRU

Linearity

Error

± 0.75 LSB

± 0.75 LSB

± 0.75 LSB

± 0.75 LSB

± 0.75 LSB

± 0.75 LSB

± 0.75 LSB

± 0.75 LSB

± 0.75 LSB

Package

Description

Plastic DIP

Small Outline IC

Thin Shrink Small

Outline (TSSOP)

Plastic DIP

Small Outline IC

Thin Shrink Small

Outline (TSSOP)

Plastic DIP

Small Outline IC

Thin Shrink Small

Outline (TSSOP)

Package

Option

N-20

R-20

RU-20

N-24

R-24

RU-24

N-28

R-28

RU-28

REV. B

–3–

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