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LM9140BYZ-10.0 Datasheet

  • LM9140BYZ-10.0

  • Precision Micropower Shunt Voltage Reference

  • 12頁

  • NSC

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LM9140 Precision Micropower Shunt Voltage Reference
April 1998
LM9140
Precision Micropower Shunt Voltage Reference
General Description
The LM9140鈥檚 reverse breakdown voltage temperature coef-
ficients of
鹵
25 ppm/藲C are ideal for precision applications.
The LM9140鈥檚 advanced design eliminates the need for an
external stabilizing capacitor while ensuring stability with any
capacitive load, thus making the LM9140 easy to use. Fur-
ther reducing design effort is the availability of several fixed
reverse breakdown voltages: 2.500V, 4.096V, 5.000V, and
10.000V. The minimum operating current increases from
60 碌A(chǔ) for the LM9140-2.5 to 100 碌A(chǔ) for the LM9140-10.0. All
versions have a maximum operating current of 15 mA.
The LM9140 utilizes fuse and zener-zap reverse breakdown
voltage trim during wafer sort to ensure that the prime parts
have an accuracy of better than
鹵
0.5% (B grade) at 25藲C.
Bandgap reference temperature drift curvature correction
and low dynamic impedance ensure stable reverse break-
down voltage accuracy over a wide range of operating tem-
peratures and currents.
n
Tolerates capacitive loads
n
Fixed reverse breakdown voltages of 2.500V, 4.096V,
5.000V, and 10.000V
Key Specifications
(LM9140-2.5)
n
Temperature coefficient:
鹵
25 ppm/藲C (max)
n
Output voltage tolerance:
鹵
0.5% (max)
n
Low output noise (10 Hz to 10 kHz): 35 碌V
rms
(typ)
n
Wide operating current range: 60 碌A(chǔ) to 15 mA
n
Industrial temperature range: 鈭?0藲C to +85藲C
Applications
n
n
n
n
n
n
n
n
Portable, Battery-Powered Equipment
Data Acquisition Systems
Instrumentation
Process Control
Energy Management
Product Testing
Automotive
Precision Audio Components
Features
n
n
n
n
Guaranteed temperature coefficient of
鹵
25 ppm/藲C
Reverse breakdown voltage tolerance of
鹵
0.5%
Small package: TO-92
No output capacitor required
Connection Diagram
TO-92
DS011393-2
Bottom View
See NS Package Number Z03A
Ordering Information
Reverse Breakdown
Voltage Tolerance at 25藲C
and Average Reverse Breakdown
Voltage Temperature Coefficient
0.5%, 25 ppm/藲C max
LM9140BYZ-2.5,
LM9140BYZ-4.1,
LM9140BYZ-5.0,
LM9140BYZ-10.0
Z (TO-92)
漏 1998 National Semiconductor Corporation
DS011393
www.national.com

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