AD7892 datasheet(3/14 Pages) AD

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ABSOLUTE MAXIMUM RATINGS*

(TA = +25

°C unless otherwise noted)

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

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

Analog Input Voltage to AGND

AD7892-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

±17 V

AD7892-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V, VDD

AD7892-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

±7 V

Reference Input Voltage to AGND . . . –0.3 V to VDD + 0.3 V

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

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

Operating Temperature Range

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

°C to +85°C

Extended (S Version) . . . . . . . . . . . . . . . . –55

°C to +125°C

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

°C to +150°C

Parameter

A Versions

B Versions

S Version

Unit

Test Conditions/Comments

LOGIC OUTPUTS

Output High Voltage, VOH

4.0

V min

ISOURCE = 200

µA

Output Low Voltage, VOL

0.4

V max

ISINK = 1.6 mA

DB11–DB0

Floating-State Leakage Current

±10

µA max

Floating-State Capacitance

pF max

Output Coding

AD7892-1 and AD7892-3

Two’s Complement

AD7892-2

Straight (Natural) Binary

CONVERSION RATE

Conversion Time

1.47

µs max

AD7892-3

Track/Hold Acquisition Time

0.2

µs max

AD7892-3

Conversion Time

1.6

1.68

µs max

AD7892-1 and AD7892-2

Track/Hold Acquisition Time

0.4

0.32

µs max

AD7892-1 and AD7892-2

POWER REQUIREMENTS

VDD

V nom

±5% for Specified Performance

IDD

Normal Operation

mA max

Standby Mode

AD7892-2

250

µA typ

AD7892-3, AD7892-1

100

µA max

typ 15

µA

Power Dissipation

Normal Operation

mW max

VDD = +5 V. Typically 60 mW

Standby Mode

AD7892-2

1.25

mW typ

AD7892-3, AD7892-1

400

500

µW max

VDD = +5 V. Typically 75

µW

NOTES

1Temperature ranges are as follows: A, B Versions: –40

°C to +85°C; S Version: –55°C to +125°C.

2S Version available on AD7892-1 and AD7892-2 only.

3See Terminology.

4Sample tested @ +25

°C to ensure compliance.

5These normal mode and standby mode currents are achieved with resistors (in the range 10 k

Ω to 100 kΩ) to either DGND or V

DD on Pins 8, 9, 16 and 17.

6A conversion should not be initiated on the part within 30

µs of exiting standby mode.

Specifications subject to change without notice.

AD7892

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

°C

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

θJA Thermal Impedance . . . . . . . . . . . . . . . . . . . . . 105°C/W

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

°C

Cerdip Package, Power Dissipation . . . . . . . . . . . . . . 450 mW

θJA Thermal Impedance . . . . . . . . . . . . . . . . . . . . . . 70°C/W

Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . +300

°C

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

θJA Thermal Impedance . . . . . . . . . . . . . . . . . . . . . . 75°C/W

Lead Temperature, Soldering

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

°C

Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . +220

°C

*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.

REV. C

–3–

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