REF200 Datasheet, PDF (1/15 Pages) Burr-Brown (TI) – DUAL CURRENT SOURCE/CURRENT SINK

®
REF200
REF200
REF200
DUAL CURRENT SOURCE/CURRENT SINK
FEATURES
q COMPLETELY FLOATING:
No Power Supply or Ground Connections
q HIGH ACCURACY: 100µA ±0.5%
q LOW TEMPERATURE COEFFICIENT:
±25ppm/°C
q WIDE VOLTAGE COMPLIANCE:
2.5V to 40V
q ALSO INCLUDES CURRENT MIRROR
APPLICATIONS
q SENSOR EXCITATION
q BIASING CIRCUITRY
q OFFSETTING CURRENT LOOPS
q LOW VOLTAGE REFERENCES
q CHARGE-PUMP CIRCUITRY
q HYBRID MICROCIRCUITS
DESCRIPTION
The REF200 combines three circuit building-blocks
on a single monolithic chip—two 100µA current
sources and a current mirror. The sections are
dielectrically isolated, making them completely
independent. Also, since the current sources are two-
terminal devices, they can be used equally well as
current sinks. The performance of each section is
individually measured and laser-trimmed to achieve
high accuracy at low cost.
The sections can be pin-strapped for currents of 50µA,
100µA, 200µA, 300µA or 400µA. External circuitry
can be used to obtain virtually any current. These and
many other circuit techniques are shown in the
Applications section of this Data Sheet.
The REF200 is available in plastic 8-pin mini-DIP
and SOIC packages.
I₁
High
8
I₂
High
7
Substrate
6
Mirror
In
5
100µA
100µA
1
2
3
4
I₁
I₂
Mirror
Mirror
Low
Low Common Out
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Internet: http://www.burr-brown.com/ • FAXLine: [phone] (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: [phone] • Immediate Product Info: [phone]
© 1988 Burr-Brown Corporation
PDS-851D
Printed in U.S.A. October, 1993