DIV100
®
ANALOG DIVIDER
FEATURES
APPLICATIONS
q HIGH ACCURACY: 0.25% Maximum Error,
40:1 Denominator Range
q TWO-QUADRANT OPERATION
Dedicated Log-Antilog Technique
q EASY TO USE
Laser-trimmed to Specified Accuracy
No External Resistors Needed
q LOW COST
q DIP PACKAGE
q DIVISION
q SQUARE ROOT
q RATIOMETRIC MEASUREMENT
q PERCENTAGE COMPUTATION
q TRANSDUCER AND BRIDGE
LINEARIZATION
q AUTOMATIC LEVEL AND GAIN CONTROL
q VOLTAGE CONTROLLED AMPLIFIERS
q ANALOG SIMULATION
DESCRIPTION
The DIV100 is a precision two-quadrant analog
divider offering superior performance over a wide
range of denominator input. Its accuracy is nearly two
orders of magnitude better than multipliers used for
division. It consists of four operational amplifiers and
logging transistors integrated into a single monolithic
circuit and a laser-trimmed, thin-film resistor network.
The electrical characteristics of these devices offer the
user guaranteed accuracy without the need for external
adjustment — the DIV100 is a complete, single package analog divider.
7
VREF
Output
For those applications requiring higher accuracy than
the DIV100 specifies, the capability for optional
adjustment is provided. These adjustments allow the
user to set scale factor, feedthrough, and outputreferred offsets for the lowest total divider error.
The DIV100 also gives the user a precision, temperature-compensated reference voltage for external use.
Designers of industrial process control systems,
analytical instruments, or biomedical instrumentation
will find the DIV100 easy to use and also a low cost,
but highly accurate solution to their analog divider
applications.
4
Q1
8
14
3kΩ
+VCC
Q3
6
VREF
Common
10
+
A1
A3
5
–
Q2
1
D
Input
–VCC
9
A2
12
11
3
A4
2
Output
13
N
Input
International Airport Industrial Park • Mailing Address: PO Box 11400
Tel: (520) 746-1111 • Twx: 910-952-1111 • Cable: BBRCORP •
©
1980 Burr-Brown Corporation
• Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd. • Tucson, AZ 85706
Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
PDS-427B
Printed in U.S.A. October, 1993
