AD688 datasheet(2/8 Pages) AD

Part #	AD688

Description	High Precision -10 V Reference

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REV. A

–2–

AD688–SPECIFICATIONS

AD688AQ/SQ

AD688BQ

Min

Typ

Max

Min

Typ

Max

Units

OUTPUT VOLTAGE ERROR

+10 V, –10 V Outputs

–5

+5

–2

+2

mV

±10 V TRACKING ERROR

–3

+3

–1.5

+1.5

mV

OUTPUT VOLTAGE DRIFT

+10 V, –10 V Outputs

0

°C to +70°C (A, B)

±2

–1.5

+1.5

ppm/

°C

–40

°C to +85°C (A, B)

–3

+3

–3

+3

ppm/

°C

–55

°C to +125°C (S)

–6

+6

ppm/

°C

GAIN ADJ AND BAL ADJ

2

Trim Range

+5

mV

Input Resistance

150

k

Ω

LINE REGULATION

TMIN to TMAX

3

–200

+200

–200

+200

µV/V

LOAD REGULATION

TMIN to TMAX

+10 V Output, 0<IOUT <10 mA

50

µV/mA

–10 V Output, –10<IOUT<0 mA

50

µV/mA

SUPPLY CURRENT

TMIN to TMAX

9

12

9

12

mA

Power Dissipation

270

360

270

360

mW

OUTPUT NOISE (ANY OUTPUT)

0.1 Hz to 10 Hz

6

µV p-p

Spectral Density, 100 Hz

140

nV

√Hz

LONG TERM STABILITY (@ +25

°C)

15

ppm/1000 hours

BUFFER AMPLIFIERS

Offset Voltage

100

µV

Offset Voltage Drift

1

µV/°C

Bias Current

20

nA

Open Loop Gain

110

dB

Output Current A3, A4

–10

+10

–10

+10

mA

Common Mode Rejection (A3, A4)

VCM = 1 V p-p

100

dB

Short-Circuit Current

50

mA

TEMPERATURE RANGE

Specified Performance

A, B Grades

–40

+85

–40

+85

°C

S Grade

–55

+125

°C

NOTES

1See Figure 2a for output configuration. Specifications tested using +10 V output unless otherwise indicated.

2Gain and balance adjustments guaranteed capable of trimming output voltage error and symmetry error to zero.

3Test Condition: +V

S = +18 V, –VS = –18 V; +VS = +13.5 V, VS = –13 .5 V.

Specifications shown in boldface are tested on all production units at final electrical test. Results from those tests are used to calculate outgoing quality levels. All min

and max specifications are guaranteed.

Specifications subject to change without notice.

(typical @ +25 C, +10 V output, VS =

15 V unless otherwise noted

1)

ABSOLUTE MAXIMUM RATINGS*

+VS to –VS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 V

Power Dissipation (+25

°C)

Q Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 600 mW

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

°C to +150°C

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

°C

Package Thermal Resistance

Q (

θ

JA/θJC)

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 120/35

°C/W

Output Protection: All outputs safe if shorted to ground

*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 indicated

in the operational sections of this specifications is not implied. Exposure to absolute

maximum rating conditions for extended periods may affect reliability.

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