AD7851 datasheet(6/36 Pages) AD

6 / 36 page

AD7851

–6–

REV. A

ABSOLUTE MAXIMUM RATINGS

(TA = +25°C unless otherwise noted)

AVDD to AGND . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V

DVDD to DGND . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V

AVDD to DVDD . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +0.3 V

Analog Input Voltage to AGND . . . . –0.3 V to AVDD + 0.3 V

Digital Input Voltage to DGND . . . . –0.3 V to DVDD + 0.3 V

Digital Output Voltage to DGND . . . –0.3 V to DVDD + 0.3 V

REFIN/REFOUT to AGND . . . . . . . . . –0.3 V to AVDD + 0.3 V

Input Current to Any Pin Except Supplies

2 . . . . . . . .

±10 mA

Operating Temperature Range

Commercial (A, K Versions) . . . . . . . . . . –40

°C to +125°C

Storage Temperature Range . . . . . . . . . . . –65

°C to +150°C

Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . +150

°C

Plastic DIP Package, Power Dissipation . . . . . . . . . . 450 mW

JA Thermal Impedance

. . . . . . . . . . . . . . . . . . . .

105

°C/W

JC Thermal Impedance

. . . . . . . . . . . . . . . . . . . . 34.7

°C/W

Lead Temperature, (Soldering, 10 secs) . . . . . . . . . . +260

°C

SOIC, SSOP Package, Power Dissipation . . . . . . . . . 450 mW

JA Thermal Impedance . . . 75

°C/W (SOIC) 115°C/W (SSOP)

JC Thermal Impedance . . . . 25°C/W (SOIC) 35°C/W (SSOP)

Lead Temperature, Soldering

Vapor Phase (60 secs) . . . . . . . . . . . . . . . . . . . . . . +215

°C

Infrared (15 secs) . . . . . . . . . . . . . . . . . . . . . . . . . +220

°C

ESD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . >1.5 kV

NOTES

1Stresses above those listed under “Absolute Maximum Ratings” may cause

permanent damage to the device. This is a stress rating only and functional

operation of the device at these or any other conditions above those listed in the

operational sections of this specification is not implied. Exposure to absolute

maximum rating conditions for extended periods may affect device reliability.

2Transient currents of up to 100 mA will not cause SCR latch-up.

PINOUT FOR DIP, SOIC AND SSOP

AD7851

TOP VIEW

(Not to Scale)

CONVST

BUSY

SLEEP

REFIN/REFOUT

AVDD

AGND

CREF1

CREF2

AIN(+)

AIN(–)

AGND

SYNC

SCLK

CLKIN

DIN

DOUT

DGND

DVDD

CAL

SM2

SM1

POLARITY

AMODE

ORDERING GUIDE

Linearity

Temp

Error

Throughput

Package

Model

Range

(LSB)

Rate

@ +125 C

Options

AD7851AN

–40

°C to +85°C

±2

333 kSPS

238 kSPS

N-24

AD7851KN

°C to +85°C

±1

285 kSPS

238 kSPS

N-24

AD7851AR

–40

°C to +85°C

±2

333 kSPS

238 kSPS

R-24

AD7851KR

°C to +85°C

±1

285 kSPS

238 kSPS

R-24

AD7851ARS

–40

°C to +85°C

±2

333 kSPS

238 kSPS

RS-24

EVAL-AD7851CB

EVAL-CONTROL BOARD

NOTES

1Both A and K Grades are guaranteed up to 125

°C, but at a lower throughput of 238 kHz (5 MHz)..

2Linearity error refers to the integral linearity error.

3N = Plastic DIP; R = SOIC; RS = SSOP.

4This can be used as a stand-alone evaluation board or in conjunction with the EVAL-CONTROL BOARD for evaluation/demonstration

purposes.

5This board is a complete unit allowing a PC to control and communicate with all Analog Devices, Inc. evaluation boards ending in the

CB designators.

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