Diodes ZRT040 - Manual

ZRT040
4.01V LOW POWER PRECISION REFERENCE SOURCE
ZRT040
Document number: DS33258 Rev. 5 - 2
1 of 5
www.diodes.com
February 2011
© Diodes Incorporated
Description
The ZRT040 is a monolithic integrated circuit providing a
precise stable reference voltage of 4.01V at 500
μA.
The circuit features a knee current of 150
μA and operation
over a wide range of temperatures and currents.
The ZRT040 is available in a SOT223 package for surface
mount applications. This device offers a trim facility whereby
the output voltage can be adjusted as shown in the
schematic diagram. This facility is used when compensating
for system errors or setting the reference output to a
particular value. When the trim facility is not used, the pin
should be left open circuit.
Pin Assignments
SOT223
Top View
(Pin 4 floating or
connected to pin 2)
Features
• Trimmable
output
•
Excellent temperature stability
•
Low output noise figure
•
-40 to 85°C operating temperature range
•
1% initial voltage tolerance
•
No external stabilizing capacitor required in most cases
•
Low slope resistance
•
No derating required at low temperatures
• SOT223
package
Schematic Diagram
This circuit will allow the reference to be trimmed over a wide range. The device is specified over a ±5% trim range.
1
2
3
4
T
RIM
GND
V
R