NTE999M Datasheet, PDF (1/3 Pages) NTE Electronics – Integrared Circuit Programmable Precision Reference

NTE999M
Integrared Circuit
Programmable Precision Reference
Description:
The NTE999M integrated circuit is a three–terminal programmable shunt regulator. This monolithic
IC voltage reference operates as a low temperature coefficient zener which is programmable from
V_ref to 36 volts with two external resistors. This device exhibits a wide operating current range of 1.0
to 100mA with a typical dynamic impedance of 0.22Ω. The characteristics of this reference make it
an excellent replacement for zener diodes in many applications such as digital voltmeters, power sup-
plies, and op amp circuitry. The 2.5 volt reference makes it convenient to obtain a stable reference
from 5.0 volt logic supplies, and since the NTE999M operates as a shunt regulator, it can be used as
either a positive or negative voltage reference.
Features:
D Programmable Output Voltage to 36 Volts
D Voltage Reference Tolerance: ±1.0%
D Low Dynamic Output Impedance: 0.22Ω Typical
D Sink Current Capability of 1.0 to 100mA
D Equivalent Full Range Temperature Coefficient of 50ppm/°C Typical
D Temperature Compensated for Operation over Full Rated Operating Temperature Range
D Low Output Noise Voltage.
Absolute Maximum Ratings: (T_A = 0° to +70°C, unless otherwise noted.)
Cathode to Anode Voltage, V_KA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37V
Cathode Current Range, Continuous, I_K . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –100 to +150mA
Reference Input Current Range, Continuous, I_ref . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.05 to +10mA
Total Power Dissipation (T_A = +25°C), P_D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 725mW
Derate Above 25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.8mW/°C
Operating Junction Temperature, T_J . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +150°C
Operating Ambient Temperature Range, T_A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0° to +70°C
Storage Temperature Range, T_stg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65° to +150°C
Thermal Resistance, Junction–to–Ambient, R_thJA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178°C/W
Thermal Resistance, Junction–to–Case, R_thJC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83°C/W
Lead Temperature (During Soldering, 1/16” from case for 10sec), T_L . . . . . . . . . . . . . . . . . . . +260°C