DATA SHEET

FMS3110/3115

Rev. 1.07 12/8/04

5

Voltage Reference

35

+1.235 V

Voltage Reference Output/Input. An internal voltage source of

+1.235 Volts is output on this pin. An external +1.235 Volt reference

may be applied here which overrides the internal reference.

36

560

Ω

Current-Setting Resistor. Full-scale output current of each D/A

converter is determined by the value of the resistor connected

D/A full-scale (white) current may also be calculated from:

voltage.

COMP

34

0.1 µF

Compensation Capacitor. A 0.1 µF ceramic capacitor must be

Power and Ground

12, 30, 31

+5 V

Power Supply.

GND

27, 28

0.0V

Ground.

Pin Name

Pin Number

Value

Description

Equivalent Circuits

Figure 2. Equivalent Digital Input Circuit

Figure 3. Equivalent Analog Output Circuit

Digital

Input

p

n

GND

np

GND

OUT