1
SEMICONDUCTORS
DEVICE DESCRIPTION
The ZRA124 uses a bandgap circuit design to achieve a
precision micropower voltage reference of 1.24 volts.
Thedeviceisavailable ina smalloutline surfacemount
packages, ideal for applications where space saving is
important.
The ZRA124 design provides a stable voltage without
an external capacitor and is stable with capacitive
loads. The ZRA124 is recommended for operation
between 50A and 5mA and so is ideally suited to low
power and battery powered applications.
Excellent performance is maintained to an absolute
maximumof25mA, howeverthe rugged designand 20
volt processing allows the reference to withstand
transient effects and currents up to 200mA. Superior
switching capability allows the device to reach stable
operating conditions in only a few microseconds.
FEATURES
•
Typical T
C
30ppm/°C
•
Typical slope resistance 0.65⍀
•
⫾ 1% tolerance
•
Industrial temperature range
•
Operating current 50A to 5mA
•
No stabilising capacitor required
•
Transient response, stable in less than 10s
•
Small SOT23 package
APPLICATIONS
•
Battery powered and portable equipment
•
Metering and measurement systems
•
Instrumentation
•
Precision power supplies
•
Test equipment
•
Data acquisition systems
ZRA124
ISSUE 3 - JUNE 2004
PRECISION 1.24 VOLT MICROPOWER VOLTAGE REFERENCE
SCHEMATIC DIAGRAM
DEVICE TOL % REEL
SIZE
TAPE
WIDTH
REEL
QUANTITY
PART
MARK
ZRA124F01TA 1 7” 8mm 3,000 12C
ORDERING INFORMATION
TOP VIEW
Pin 1 floating or connected to pin 2
