ZXRE125
SOT23 MICROPOWER 1.22V VOLTAGE REFERENCE
DESCRIPTION
typical temperature coefficient of only 20ppm/°C. The
device has been designed to be highly tolerant of
capacitive loads so maintaining excellent stability.
The ZXRE125 is a bandgap circuit designed to achieve
a precision micropower voltage reference of 1.22 volts.
The device is available in the small outline SOT23
surface mount package which is ideal for applications
where space saving is important.
This device offers a SOT23 pin for pin compatible
replacement of the ZRA124 and ZRA125 series of
voltage references. An E-Line (TO92 style) package is
also available.
SOT23 tolerance is available to 0.5% for precision
applications. Excellent performance is maintained
over the 30µA to 5mA operating current range with a
•
•
•
•
•
•
•
•
Battery powered equipment
Precision power supplies
Portable instrumentation
Portable communications devices
Notebook and palmtop computers
Data acquisition systems
A/D and D/A converters
FEATURES
•
High performance replacement for ZRA124 and
ZRA125 references
•
•
•
•
•
•
•
Small outline SOT23
SO8 and E-Line alternatives available
30µA knee current
20ppm/°C typical temperature coefficient
Unconditionally stable
Test equipment
0.5%, 1%, 2% and 3% tolerance
Contact Zetex marketing for availability of tighter
tolerance devices
SCHEMATIC DIAGRAM
APPLICATIONS CIRCUIT
V
R
1.5V
4k7
1.22V
G
nd
Low quiescent reference from a 1.5V battery source.
APPLICATIONS
ISSUE 5 - JANUARY 2003
1
