LM9140 Precision Micropower Shunt Voltage Reference
April 1998
LM9140 Precision Micropower Shunt Voltage Reference
Gen...
LM9140 Precision Micropower Shunt
Voltage Reference
April 1998
LM9140 Precision Micropower Shunt
Voltage Reference
General Description
The LM9140’s reverse breakdown
voltage temperature coefficients of ± 25 ppm/˚C are ideal for precision applications. The LM9140’s advanced design eliminates the need for an external stabilizing capacitor while ensuring stability with any capacitive load, thus making the LM9140 easy to use. Further 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 µA for the LM9140-2.5 to 100 µA 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 ± 0.5% (B grade) at 25˚C. Bandgap reference temperature drift curvature correction and low dynamic impedance ensure stable reverse breakdown
voltage accuracy over a wide range of operating temperatures 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: ± 25 ppm/˚C (max) n Output
voltage tolerance: ± 0.5% (max) n Low output noise (10 Hz to 10 kHz): 35 µVrms (typ) n Wide operating current range: 60 µA to 15 mA n Industrial temperature range: −40˚C to +85˚C
Applications
n n n n n n n n Portable, Batter...