NTE999−1 Integrated Circuit Programmable Voltage Reference TO92 Type Package Description: The NTE999−1 is a programmable shunt voltage reference in a TO92 type package with guaranteed temperature stability over the entire operating temperature range. The output voltage may be set to any value between 2.5V and 36V with two external resistors. The NTE999−1 operated with a wide current range from 1 to 100mA wit a typical dynamic impedance of 0.2+ . Features: D Adjustable Output Voltage: VREF to 36V D Sink Current capability: 1 to 100mA D Typical Output Impedance: 0.22+ D 0.4% Voltage Precision Absolute Maximum Ratings: Cathode−to−Anode Voltage, VKA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37V Continuous Cathode Current Range, Ik . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −100 to +150mA Reference Input Current Range, Iref . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.05 to +10mA Power Dissipation (Note 1), Pd . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 625mW Operating Junction Temperature, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +1505C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −655 to +1505C Electrostatic Discharge, ESD HBM: Human Body Model (Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2000V MM: Machine Model (Note 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200V CDM: Charged Device Model (Note 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1500V Thermal Resistance, Junction−to−Ambient, RthJA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +1305C/W Note 1. Calculated with TJ = +1505C, TA = +255C, and with RthJA = 2005C/W. Note 2. Human body model: A 100pF capacitor is charged to the specified voltage, then discharged through a 1.5k+ resistor between tow pins of the device. This is done for all couples of connected pin combinations while the other pins are floating. Note 3. Machine model: A 200pF capacitor is charged to the specified voltage, then discharged directly between two pins of the device with no external series resistor (internal resistor < 5+ ). This is done for all couples of connected pin combinations while the other pins are floating. Note 4. Charged device model: All pins and the package are charged together to the specified voltage and then discharged directly to the ground through only one pin. This is done for all pins. Recommended Operating Conditions: Parameter Symbol Cathode−to−Anode Voltage Min Typ Max Unit VKA Vref − 36 V Ik 1 − 100 mA Topr −20 − +70 5C Cathode Current Operating Ambient Temperature Range Test Conditions Electrical Characteristics: (TA = +255C unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit 2.49 2.50 2.51 V Reference Input Voltage Vref VKA = Vref, Ik = 10mA Reference Input Voltage Deviation Over Temperature Range DVref VKA = Vref, Ik = 10mA, Tmin 3 TA 3 Tmax, Note 5 − 3 20 mV Temperature Coefficient of Reference Input Voltage DVref DT VKA = Vref, Ik = 10mA, Tmin 3 TA 3 Tmax, Note 6 − +13 +90 ppm/5C Ratio of Change in Reference Input Voltage to Change in Cathode−to−Anode Voltage DVref DVka Ik = 10mA, DVKA = 36V to 3V −2.0 −1.1 − mV/V − 1.5 2.5 3A − − 3.0 3A Reference Input Current Iref Ik = 10mA, R1 = 10k+ , R2 = 8 Tmin 3 TA 3 Tmax Reference Input Current Deviation over Temperature Range DIref Ik = 10mA, R1 = 10k+ , R2 = 8, Tmin 3 TA 3 Tmax − 0.2 1.2 3A Minimum Cathode Current for Regulation Imin VKA = Vref − 0.5 1.0 mA Off−State Cathode Current Ioff − 180 500 nA − 0.2 0.5 + Dynamic Impedance |ZKA| VKA = Vref, DIk = 1 to 100mA, f 3 1kHz, Note 7 Note 5. DVref is defined as the difference between the maximum and minimum values obtained over the full temperature range, DVref = Vrefmax − Vrefmin. Note 6. The temperature coefficient is defined as the slopes (positive and negative) of the voltage versus temperature limits within which the reference is guaranteed. Note 7. The dynamic impedance is defined as |ZKA| = DVK DIK .135 (3.45) Min .500 (12.7) Min Seating Plane .210 (5.33) Max .021 (.445) Dia Max Ref K A .100 (2.54) .050 (1.27) .165 (4.2) Max .105 (2.67) Max .205 (5.2) Max .105 (2.67) Max