AD7927(2003) View Datasheet(PDF) - Analog Devices

Part Name

Description

Manufacturer

AD7927
(Rev.:2003)

8-Channel, 200 kSPS, 12-Bit ADC with Sequencer in 20-Lead TSSOP

Analog Devices 

AD7927

ABSOLUTE MAXIMUM RATINGS1

(TA = 25∞C, unless otherwise noted.)

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

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

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

Digital Input Voltage to AGND . . . . . . . . . . . . –0.3 V to +7 V

Digital Output Voltage to AGND . . . . . –0.3 V to AVDD + 0.3 V

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

Input Current to Any Pin Except Supplies2 . . . . . . . . ± 10 mA

Operating Temperature Range

Commercial (B Version) . . . . . . . . . . . . . . –40∞C to +85∞C

Storage Temperature Range . . . . . . . . . . . –65∞C to +150∞C

Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . 150∞C

TSSOP Package, Power Dissipation . . . . . . . . . . . . . 450 mW

qJA Thermal Impedance . . . . . . . . . . . . . . 143∞C/W (TSSOP)

qJC Thermal Impedance . . . . . . . . . . . . . . . 45∞C/W (TSSOP)

Lead Temperature, Soldering

Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . . . . 215∞C

Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220∞C

ESD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 kV

NOTES

1 Stresses above those listed under Absolute Maximum Ratings may cause perma-

nent 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.

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

ORDERING GUIDE

Model

Temperature

Range

Linearity

Error (LSB)1

Package

Option

Package

Description

AD7927BRU

EVAL-AD7927CB2

EVAL-CONTROL BRD23

–40∞C to +85∞C

±1

RU-20

TSSOP

Evaluation Board

Controller Board

NOTES

1 Linearity error here refers to integral linearity error.

2 This can be used as a standalone evaluation board or in conjunction with the Evaluation Controller Board for evaluation/demonstration purposes.

3 This board is a complete unit allowing a PC to control and communicate with all Analog Devices evaluation boards ending in the CB designators.

To order a complete evaluation kit, you will need to order the particular ADC evaluation board, e.g., EVAL-AD7927CB, the EVAL-CONTROL

BRD2, and a 12 V ac transformer. See the relevant Evaluation Board Application Note for more information.

CAUTION

ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily

accumulate on the human body and test equipment and can discharge without detection. Although the

AD7927 features proprietary ESD protection circuitry, permanent damage may occur on devices

subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended

to avoid performance degradation or loss of functionality.

REV. 0

–5–

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