I

High

I

High

Substrate

Mirror

In

I

Low

I

Low

Mirror

Out

Mirror

Common

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2

1

2

8

7

6

5

1

2

3

4

100µA

100µA

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Reference

Design

REF200

SBVS020B – SEPTEMBER 2000 – REVISED JULY 2015

REF200 Dual Current Source and Current Sink

1 Features

3 Description

The REF200 combines three circuit building-blocks

1

•

Completely Floating: No Power Supply or Ground

on a single monolithic chip: two 100-µA current

Connections

sources and a current mirror. The sections are

•

High Accuracy: 100 µA ±0.5%

dielectrically

isolated,

making

them

completely

•

Low Temperature Coefficient: ±25 ppm/°C

independent. Also, because the current sources are

two-terminal devices, they can be used equally well

•

Wide Voltage Compliance: 2.5 V to 40 V

as current sinks. The performance of each section is

•

Includes Current Mirror

individually measured and laser-trimmed to achieve

high accuracy at low cost.

2 Applications

The sections can be pin-strapped for currents of 50

•

Sensor Excitation

µA, 100 µA, 200 µA, 300 µA, or 400 µA. External

•

Biasing Circuitry

circuitry can obtain virtually any current. These and

many other circuit techniques are shown in the

•

Offsetting Current Loops

Application Information section of this data sheet.

•

Low Voltage References

The REF200 is available in an SOIC package.

•

Charge-pump Circuitry

•

Hybrid Microcircuits

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

REF200

SOIC (8)

3.91 mm × 4.90 mm

(1) For all available packages, see the package addendum at the

end of the data sheet.

Functional Block Diagram

1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.