AD7490BRU(RevA) 查看數據表（PDF） - Analog Devices

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AD7490BRU
(Rev.:RevA)

16-Channel, 1 MSPS, 12-Bit ADC with Sequencer in 28-Lead TSSOP

Analog Devices 

ABSOLUTE MAXIMUM RATINGS1

(TA = 25°C, unless otherwise noted.)

VDD to GND . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V

VDRIVE to GND . . . . . . . . . . . . . . . . . . –0.3 V to VDD + 0.3 V

Analog Input Voltage to GND . . . . . . . –0.3 V to VDD + 0.3 V

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

Digital Output Voltage to GND . . . . . –0.3 V to VDD + 0.3 V

REFIN to GND . . . . . . . . . . . . . . . . . . –0.3 V to VDD + 0.3 V

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

Operating Temperature Ranges

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

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

Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . 150°C

AD7490

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

θJA Thermal Impedance . . . . . . . . . . . 108.2°C/W (LFCSP)

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 97.9°C/W (TSSOP)

θJC Thermal Impedance . . . . . . . . . . . 32.71°C/W (LFCSP)

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14°C/W (TSSOP)

Lead Temperature, Soldering

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

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

ESD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 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; 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.

200␮A

IOL

TO

OUTPUT

PIN CL

25pF

200␮A

IOH

1.6V

Figure 1. Load Circuit for Digital Output Timing Specifications

ORDERING GUIDE

Model

Temperature

Range

Linearity

Package Package

Error (LSB)1 Option

Description

AD7490BCP

–40°C to +85°C ± 1

AD7490BRU

–40°C to +85°C ± 1

EVAL-AD7490CB2

Evaluation Board

EVAL-CONTROL BRD23 Controller Board

CP-32

RU-28

LFCSP

TSSOP

NOTES

1Linearity error refers to integral linearity error.

2This can be used as a stand-alone evaluation board or in conjunction with the Evaluation Controller Board for evaluation/

demonstration purposes.

3This 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-AD7490CB, the EVAL-CONTROL-BRD2, and a 12 V ac transformer. See relevant evaluation board technical 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 AD7490 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.

WARNING!

ESD SENSITIVE DEVICE

REV. A

–5–

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