AD7840ARS datasheet(3/16 Pages) AD

3 / 16 page

AD7840

REV. B

–3–

ORDERING GUIDE

Integral

Temperature

SNR

Nonlinearity

Package

Model

Range

(dB)

(LSB)

Option

AD7840JN

°C to +70°C

78 min

±2 max

N-24

AD7840KN

°C to +70°C

80 min

±1 max

N-24

AD7840JP

°C to +70°C

78 min

±2 max

P-28A

AD7840KP

°C to +70°C

80 min

±1 max

P-28A

AD7840AQ

–25

°C to +85°C

78 min

±2 max

Q-24

AD7840ARS

–25

°C to +85°C

78 min

±2 max

RS-24

AD7840BQ

–25

°C to +85°C

80 min

±1 max

Q-24

AD7840SQ

–55

°C to +125°C 78 min ±2 max

Q-24

NOTES

1To order MIL-STD-883, Class B processed parts, add /883B to part number.

Contact your local sales office for military data sheet and availability.

2N = Plastic DIP; P = Plastic Leaded Chip Carrier; Q = Cerdip.

3This grade will be available to /883B processing only.

TIMING CHARACTERISTICS1, 2

Limit at TMIN, TMAX

Parameter

(J, K, A, B Versions)

(S Version)

Units

Conditions/Comments

ns min

to WR Setup Time

ns min

to WR Hold Time

ns min

Pulse Width

ns min

Data Valid to WR Setup Time

ns min

Data Valid to WR Hold Time

ns min

LDAC

Pulse Width

ns min

SYNC

to SCLK Falling Edge

150

200

ns min

SCLK Cycle Time

ns min

Data Valid to SCLK Setup Time

t10

100

ns min

Data Valid to SCLK Hold Time

t11

100

ns min

SYNC

to SCLK Hold Time

NOTES

1Timing specifications in bold print are 100% production tested. All other times are sample tested at +25

°C to ensure compliance. All input signals are specified with

tr = tf = 5 ns (10% to 90% of 5 V) and timed from a voltage level of 1.6 V.

2See Figures 6 and 8.

3SCLK mark/space ratio is 40/60 to 60/40.

Specifications subject to change without notice.

(VDD = +5 V

5%, VSS = –5 V

5%, AGND = DGND = 0 V.)

ABSOLUTE MAXIMUM RATINGS*

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

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

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

VOUT to AGND . . . . . . . . . . . . . . . . . . . . . . . . . . . VSS to VDD

REF OUT to AGND . . . . . . . . . . . . . . . . . . . . . . . 0 V to VDD

REF IN to AGND . . . . . . . . . . . . . . . . –0.3 V to VDD + 0.3 V

Digital Inputs to DGND . . . . . . . . . . . –0.3 V to VDD + 0.3 V

Operating Temperature Range

Commercial (J, K Versions) . . . . . . . . . . . . . . 0

°C to +70°C

Industrial (A, B Versions) . . . . . . . . . . . . . . –25

°C to +85°C

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

°C to +125°C

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

°C to +150°C

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

°C

Power Dissipation (Any Package) to +75

°C . . . . . . . . 450 mW

Derates above +75

°C by . . . . . . . . . . . . . . . . . . . . 10 mW/°C

*Stresses 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.

WARNING!

ESD SENSITIVE DEVICE

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 AD7840 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.

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