LT1029/LT1029A 5V Bandgap Reference FEATURES DESCRIPTIO 0.2% Output Tolerance The LT 1029 is a 5V bandgap reference intended for use 0.6 Shunt Impedance in the shunt or Zener mode, allowing it to be used as 700A to 10mA Operating Current either a positive or negative reference. The output is Pin Compatible with LM136-5 pretrimmed to 0.2% accuracy with 20ppm/C maximum 20ppm/C Max Drift temperature drift. A trim pin allows additional output Output Voltage Trim does not Affect Drift adjustment for even more precise output voltage. Can be Used as Positive or Negative Reference Operating current range for the LT1029 is 700A to 10mA. Extremely low dynamic impedance allows excellent U output regulation even with fluctuating operating current. APPLICATIO S The LT1029 will replace an LM136-5 or LM336-5 and A-to-D and D-to-A Converters simplify circuits using the minimum temperature coeffi- Precision Regulators cient trim network. The LT1029 does not require this Precision Current Sources special network to meet its temperature drift specification V to F and F to V Converters these application network components are simply removed. If output trimming is required for initial accuracy, the diodes in the trim network should be replaced with jumpers. , LTC and LT are registered trademarks of Linear Technology Corporation. TYPICAL APPLICATIO Output Voltage Drift 5.015 15V R1 5.010 10k 5V 5.005 LT1029 5.000 LT1029 4.995 5V R2 4.990 10k 15V 4.895 LT1029 TA01 50 25 0 25 50 75 100 125 TEMPERATURE (C) LT1029 TA02 1029afa 1 OUTPUT VOLTAGE (V) U ULT1029/LT1029A ABSOLUTE AXI U RATI GS (Note 1) Reverse Current .................................................... 15mA Storage Temperature ............................ 65C to 150C Forward Current ................................................... 10mA Lead Temperature (Soldering, 10 sec).................. 300C Operating Temperature Range LT1029C/LT1029AC ............................... 0C to 70C LT1029M/LT1029AM (OBSOLETE) .... 55C to 125C UUW PACKAGE/ORDER I FOR ATIO ORDER PART ORDER PART BOTTOM VIEW NUMBER NUMBER + ADJ BOTTOM VIEW LT1029AMH LT1029ACZ ADJ + LT1029MH LT1029CZ LT1029ACH LT1029CH H PACKAGE Z PACKAGE TO-46 METAL CAN TO-92 PLASTIC T = 150C, = 440C/W, = 80C/W JMAX JA JC T = 100C, = 160C/W JMAX JA OBSOLETE PACKAGE Consider the Z Package as an Alternate Source Consult LTC Marketing for parts specified with wider operating temperature ranges. ELECTRICAL CHARACTERISTICS The denotes the specifications which apply over the full operating temperature range, otherwise specifications are T = 25C. A PARAMETER CONDITIONS MIN TYP MAX UNITS Reverse Breakdown Voltage I = 1mA LT1029AM/LT1029AC 4.99 5.00 5.01 V R LT1029M/LT1029C 4.95 5.00 5.05 V Reverse Breakdown Change with Current 700A I 10mA 2 5 mV R 38 mV Reverse Dynamic Impedance I = 1mA 0.2 0.6 R 0.3 1.0 Temperature Stability I = 1mA LT1029AC 37 mV R LT1029C 512 mV LT1029AM 718 mV LT1029M 10 36 mV Equivalent Temperature Drift LT1029AM/LT1029AC 820 ppm/C LT1029C 12 34 ppm/C LT1029M 15 40 ppm/C Long Term Stability 20 ppm/kHr Trim Range 3+ 5, 13 % Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. 1029afa 2 U WWW