PRECISION 1.25 VOLT
MICROPOWER VOLTAGE REFERENCE
ISSUE 2 - MARCH 1998
DEVICE DESCRIPTION
The ZREF12 uses a bandgap circuit design to
achieve a precision micropower voltage
reference of 1.24 volts. The device is
available in a small outline surface mount
package, ideal for applications where space
saving is important, as well as packages for
through hole requirements.
The ZREF12 design provides a stable voltage
without an external capacitor and is stable
with capacitive loads. The ZREF12 is
recommended for operation between 50碌A(chǔ)
and 5mA and so is ideally suited to low
power and battery powered applications.
Excellent performance is maintained to an
absolute maximum of 25mA, however the
rugged design and 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.
ZREF12
FEATURES
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Small outline SO8 and TO92 style
packages
No stabilising capacitor required
Typical T
C
30ppm/擄C
Typical slope resistance 0.65鈩?/div>
鹵
1% tolerance
Industrial temperature range (Military
temperature range available on request)
Operating current 50碌A(chǔ) to 5mA
Transient response, stable in less than
10碌s
Alternative package options and
tolerances available
Battery powered and portable
equipment.
Metering and measurement systems.
Instrumentation.
Precision power supplies.
Test equipment.
Data acquisition systems
APPLICATIONS
SCHEMATIC DIAGRAM
V
R
G
nd
4-267
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