AD7245AAP datasheet(3/16 Pages) AD

3 / 16 page

AD7245A/AD7248A

REV. B

–3–

SWITCHING CHARACTERISTICS

Parameter

A, B Versions

T Version

Unit

Conditions

@ 25

°C

ns typ

Chip Select Pulsewidth

TMIN to TMAX

100

ns min

@ 25

°C

ns typ

Write Pulsewidth

TMIN to TMAX

100

ns min

@ 25

°C

ns min

Chip Select to Write Setup Time

TMIN to TMAX

ns min

@ 25

°C

ns min

Chip Select to Write Hold Time

TMIN to TMAX

ns min

@ 25

°C

ns typ

Data Valid to Write Setup Time

TMIN to TMAX

ns min

@ 25

°C

ns min

Data Valid to Write Hold Time

TMIN to TMAX

ns min

@ 25

°C

ns typ

Load DAC Pulsewidth

TMIN to TMAX

100

ns min

t8 (AD7245A Only)

@ 25

°C

ns typ

Clear Pulsewidth

TMIN to TMAX

100

ns min

NOTES

1Sample tested at 25

°C to ensure compliance.

2Power supply tolerance is

±10%.

ABSOLUTE MAXIMUM RATINGS

VDD to AGND . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +17 V

VDD to DGND . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +17 V

VDD to VSS . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +34 V

AGND to DGND . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V, VDD

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

VOUT to AGND

. . . . . . . . . . . . . . . . . . . . . . . . . . . . VSS, VDD

VOUT to VSS

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 V, 24 V

VOUT to VDD

2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –32 V, 0 V

REF OUT

2 to AGND . . . . . . . . . . . . . . . . . . . . . . . . 0 V, V

Power Dissipation (Any Package) to 75

°C . . . . . . . . . 450 mW

Derates above 75

°C by . . . . . . . . . . . . . . . . . . . . 6 mW/°C

Operating Temperature

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

°C to +85°C

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

°C to +125°C

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

°C to +150°C

Lead Temperature (Soldering, 10 secs) . . . . . . . . . . . . . 300

°C

NOTES

1Stresses 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.

2The output may be shorted to voltages in this range provided the power dissipation

of the package is not exceeded. V OUT short circuit current is typically

80 mA.

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 AD7245A/AD7248A 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

(VDD = +12 V to +15 V;

2 V

SS = 0 V to –12 V to –15 V;

2 See Figures 5 and 7.)

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