Datasheet

AD766
REV. A
–3–
WARNING!
ESD SENSITIVE DEVICE
ESD SENSITIVITY
The AD766 features input protection circuitry consisting of large “distributed” diodes and
polysilicon series resistors to dissipate both high energy discharges (Human Body Model) and
fast, low energy pulses (Charged Device Model). Per Method 3015.2 of MIL-STD-883C, the
AD766 has been classified as a Category 1 Device.
Proper ESD precautions are strongly recommended to avoid functional damage or perfor-
mance degradation. Charges as high as 4000 volts readily accumulate on the human body and
test equipment, and discharge without detection. Unused devices must be stored in conduc-
tive foam or shunts, and the foam discharged to the destination socket before devices are
removed. For further information on ESD precaution, refer to Analog Devices’ ESD
Prevention Manual.
ABSOLUTE MAXIMUM RATINGS*
V
L
to DGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0 to 13.2 V
V
S
to AGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0 to 13.2 V
–V
L
to DGND . . . . . . . . . . . . . . . . . . . . . . . . . . –13.2 V to 0 V
–V
S
to AGND . . . . . . . . . . . . . . . . . . . . . . . . . . –13.2 V to 0 V
Digital Inputs to DGND . . . . . . . . . . . . . . . . . . . .–0.3 V to V
L
AGND to DGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±0.3 V
Short Circuit Protection . . . . . . . . Indefinite Short to Ground
Soldering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +300°C, 10 sec
*Stresses greater than 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 section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
PIN DESIGNATIONS
Pin Function Description
1–V
S
Analog Negative Power Supply
2 DGND Digital Ground
3V
L
Logic Positive Power Supply
4 NC No Connection
5
CLK Clock Input
6 LE Latch Enable Input
7 DATA Serial Data Input
8–V
L
Logic Negative Power Supply
9V
OUT
Voltage Output
10 R
F
Feedback Resistor
11 SJ Summing Junction
12 AGND Analog Ground
13 I
OUT
Current Output
14 MSB ADJ MSB Adjustment Terminal
15 TRIM MSB Trimming Potentiometer Terminal
16 V
S
Analog Positive Power Supply
ORDERING GUIDE
Temperature Package
Model Range Option*
AD766JN 0°C to +70°C N-16
AD766AN –40°C to +85°C N-16
AD766SD/883B –55°C to +125°C D-16
*N = Plastic DIP; D = Ceramic DIP.
CONNECTION DIAGRAM
AD766J AD766A
Parameter Min Typ Max Min Typ Max Units
TEMPERATURE RANGE
Specified 0 +70 –40 +85 °C
Storage –60 +100 –60 +100 °C
NOTES
1
For A grade only, voltage outputs are guaranteed only if +V
S
≥ 7 V and –V
S
≤ –7 V.
2
Specified using external op amp, see Figure 3 for more details.
3
Tested at full-scale input.
4
For A grade only, power supplies must be symmetric, i.e., V
S
= |–V
S
| and +V
L
= |–V
L
|. Each supply must independently meet this equality within ±5%.
All min and max specifications are guaranteed. Specifications in boldface are tested on all production units at final electrical test. Results from those tests are used to
calculate outgoing quality levels.
Specifications subject to change without notice.