MICROCIRCUIT DATA SHEET Original Creation Date: 08/15/95 Last Update Date: 02/24/03 Last Major Revision Date: 08/15/95 MNLM199A-X REV 0CL PRECISION VOLTAGE REFERENCE General Description The LM199 are precision, temperature-stabilized monolithic zeners offering temperature coefficients a factor of ten better than high quality reference zeners. Constructed on a single monolithic chip is a temperature stabilizer circuit and an active reference zener. The active circuitry reduces the dynamic impedance of the zener to about 0.5ohms and allows the zener to operate over 0.5 mA to 10 mA current range with essentially no change in voltage or temperature coefficient. Further, a new subsurface zener structure gives low noise and excellent long term stability compared to ordinary monolithic zeners. The package is supplied with a thermal shield to minimize heater power and improve temperature regulation. The LM199 references are exceptionally easy to use and free of the problems that are often experienced with ordinary zeners. There is virtually no hysteresis in reference voltage with temperature cycling. Also, the LM199 is free of voltage shift due to stress on the leads. Finally, since the unit is temperature stabilized, warm up time is fast. The LM199 can be used in almost any application in place of ordinary zeners with improved performance. Some ideal applications are analog to digital converters, calibration standards, precision voltage or current sources or precision power supplies. Further in many cases the LM199 can replace references in existing equipment with a minimum of wiring changes. The LM199 series devices are packaged in a standard hermetic To-46 package inside a thermal shield. The LM199 is rated for operation from -55 C to +125 C. Industry Part Number NS Part Numbers LM199 LM199AH-SMD* LM199AH/883 Prime Die LM199 Controlling Document 5962-8856101XA* Processing Subgrp Description MIL-STD-883, Method 5004 1 2 3 4 5 6 7 8A 8B 9 10 11 Quality Conformance Inspection MIL-STD-883, Method 5005 1 Static tests at Static tests at Static tests at Dynamic tests at Dynamic tests at Dynamic tests at Functional tests at Functional tests at Functional tests at Switching tests at Switching tests at Switching tests at Temp ( oC) +25 +125 -55 +25 +125 -55 +25 +125 -55 +25 +125 -55 MICROCIRCUIT DATA SHEET MNLM199A-X REV 0CL (Absolute Maximum Ratings) Temperature Stabilizer Voltage 40V Reverse Breakdown Current 20 mA Forward Current 1 mA Reference to Substrate Voltage (Note 1) 40V -0.1V Operating Temperature Range -55 C to +125 C Storage Temperature Range -55 C to +125 C Soldering Information T0-92 package (10 sec.) T0-46 Package (10 Sec.) ESD Tolerance (Note 2) +260 C +300 C 3500V Note 1: Note 2: The substrate is electrically connected to the negative terminal of te temperature stabilizer. The voltage that can be applied to either ternimal of the reference is 40 V more positive or 0.1V more than the substrate. Human body model, 1.5k Ohms in series with 100pF 2 MICROCIRCUIT DATA SHEET MNLM199A-X REV 0CL Electrical Characteristics DC PARAMETERS SYMBOL PARAMETER CONDITIONS Vr Reverse Breakdown Voltage 0.5mA <= Ir <= 10mA Delta Vr Reverse Breakdown Voltage Change with Current Vnrms NOTES PINNAME MIN 6.8 MAX UNIT SUBGROUPS 7.1 V 1, 2, 3 0.5mA <= Ir <= 10mA 9.0 mV 1, 2, 3 Zener Rms Noise Voltage Ir = 1mA, Vh = 40V, 10Hz<Freq<10KHz 20.0 uV 1 Ihpk Peak Heater Current Vh = 40V, 1 % Duty Cycle 200 mA 1 Il Leakage Zener to Substrate Vh = 40V 250 nA 1 Delta Vz/Delta T Reverse Breakdown Temperature Coefficient Ir = 1mA, -55 C <= TA <= 85 C 3 0.5 ppm/C 1 Ir = 1mA, 85 C <= TA <= 125 C 3 10.0 ppm/C 1 Zr Reverse Dynamic Impedance Ir = 1mA 1 1 Ohm 1 Ih Stabilized Heater Current Vh = 30V(tested after 5 seconds of heater turn on time) 30 mA 1 2 14 mA 2 2 85 mA 3 80 uV 1 V 1 Vh = 30V (Still air) Vnpk Zener Peak Noise Voltage Ir = 1mA, Vh = 40V, 10Hz<Freq<10KHz Vf Forward Voltage Ir = 1mA Note 1: Note 2: Note 3: -1.6 Guaranteed by "Reverse Breakdown Voltage Change with Current". Guaranteed parameter, not tested. Tested on Auto Drift test oven. 3 MICROCIRCUIT DATA SHEET MNLM199A-X REV 0CL Revision History Rev ECN # 0CL M0004114 02/24/03 Rel Date Originator Changes Rose Malone Update MDS: MNLM199A-X, Rev. 0BL to MNLM199A-X, Rev. 0CL. Added ESD Level in Absolute Maximum Ratings Section. 4