LT1019 Datasheet | Linear Technology

LT1019 Precision Reference Features s s s s s s s s s s s DESCRIPTIO Tight Initial Output Voltage: < 0.05% Ultralow Drift: 3ppm/°C Typical Series or Shunt Operation Curvature Corrected Ultrahigh Line Rejection: ≈ 0.5ppm/V Low Output Impedance: ≈ 0.02Ω Plug-In Replacement for Present References Available at 2.5V, 4.5V, 5V, and 10V 100% Noise Tested Temperature Output Industrial Temperature Range in SO-8 The LT ®1019 is a third generation bandgap voltage reference utilizing thin film technology and a greatly improved curvature correction technique. Wafer level trimming of both reference and output voltage bines to produce units with high yields to very low TC and tight initial tolerance of output voltage. The LT1019 can both sink and source up to 10m A and can be used in either the series or shunt mode. This allows the reference to be used for both positive and negative output voltages without external ponents. Minimum input/ output voltage is less than 1V in the series mode, providing improved tolerance of low line conditions. The LT1019 is available in four voltages: 2.5V, 4.5V, 5V and 10V. It is a direct replacement for most bandgap references presently available including AD580, AD581, REF-01, REF-02, MC1400, MC1404 and LM168. U APPLICATIO S s s s s s s Negative Shunt References A/D and D/A Converters Precision Regulators Constant Current Sources V/F Converters Bridge Excitation , LTC and LT are registered trademarks of Linear Technology Corporation. TYPICAL APPLICATION Ultralinear Strain Guage 15V 357Ω- 0.5W IN OUT GND 5V R3 2M R2 20k R4 20k ACTIVE ELEMENT OUTPUT VOLTAGE (NORMALIZED) (V) LT1019-5 350Ω BRIDGE + A1† LT1637 - A2 - +LT1001 R5 2M GAIN = 100 R6- - 2M - TA01 - 5V 357Ω- 0.5W - 15V - REDUCES REFERENCE AND AMPLIFIER LOADING TO ≈ 0. - - IF R6 = R3, BRIDGE IS NOT LOADED BY R2 AND R4. † A1 VOS AND DRIFT ARE NOT CRITICAL BECAUSE A2 ACTS AS A DIFFERENTIAL AMPLIFIER. Output Voltage Drift 1.003 1.002 1.001 1.000 0.999 0.998 0.997 -...