PRECISION 1.25 VOLT
MICROPOWER VOLTAGE REFERENCE
ZRA124
ISSUE 2 - FEBRUARY 1997
DEVICE DESCRIPTION
•
•
•
•
•
•
Typical TC 30ppm/°C
Typical slope resistance 0.65Ω
The ZRA124 uses a bandgap circuit design to
achieve a precision micropower voltage
reference of 1.24 volts. The device is available
in small outline surface mount packages, ideal
for applications where space saving is
important, as well as packages for through
hole requirements.
± 1% tolerance
Industrial temperature range
Operating current 50µA to 5mA
Transient response, stable in less than 10µs
The ZRA124 design provides a stable voltage
withoutanexternal capacitorandisstablewith
capacitiveloads. The ZRA124isrecommended
for operation between 50µA and 5mA and so
is ideally suited to low power and battery
powered applications.
APPLICATIONS
•
•
•
•
•
•
Battery powered and portable equipment.
Metering and measurement systems.
Instrumentation.
Excellent performance is maintained to a
suggested absolute maximum of 25mA,
however the rugged design and 20 volt
processing allows the reference to withstand
transient effects and currents up to 200mA.
Superiorswitchingcapabilityallowsthedevice
to reach stable operating conditions in only a
few microseconds.
Precision power supplies.
Test equipment.
Data acquisition systems
FEATURES
•
Small outline SOT23, SO8 and TO92 style
packages
• No stabilising capacitor required
SCHEMATIC DIAGRAM
V
R
Gnd
1 - 21
