LM368-5 0 and LM368-10 Precision Voltage References
January 1995
LM368-5 0 and LM368-10 Precision Voltage References
General Description
The LM368 is a precision monolithic temperature-compen-
sated voltage reference The LM368 makes use of thin-film
technology enhanced by the discrete laser trimming of re-
sistors to achieve excellent Temperature coefficient
(Tempco) of V
OUT
(as low as 5ppm C) along with tight
initial tolerance (as low as 0 02%) The trim scheme is such
that individual resistors are cut open rather than being
trimmed (partially cut) to avoid resistor drift caused by elec-
tromigration in the trimmed area The LM368 also provides
excellent stability vs changes in input voltage and output
current (both sourcing and sinking) This device is available
in output voltage options of 5 0V and 10 0V and will operate
in both series or shunt mode Also see the LM368-2 5 data
sheet for a 2 5V output The devices are short circuit proof
when sourcing current A trim pin is made available for fine
trimming of V
OUT
or for obtaining intermediate values with-
out greatly affecting the Tempco of the device
Features
Y
Y
Y
Y
Y
Y
Y
Y
Y
300
mA
operating current
Low output impedance
Excellent line regulation ( 0001% V typical)
Single-supply operation
Externally trimmable
Low temperature coefficient
Operates in series or shunt mode
10 0V or 5 0V
Excellent initial accuracy (0 02% typical)
Connection Diagram
Metal Can Package
TL H 5522 鈥?1
Top View
case connected to V
b
Order Number LM368YH-10
LM368YH-5 0 LM368H-10 LM368H-5 0
See NS Package Number H08C
Typical Applications
Series Regulator
Shunt Regulator
TL H 5522 鈥?
TL H 5522 鈥?3
C
1995 National Semiconductor Corporation
TL H 5522
RRD-B30M115 Printed in U S A
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