LT1019 Precision Reference FEATURES DESCRIPTIO Tight Initial Output Voltage: <0.05% The LT 1019 is a third generation bandgap voltage refer- Ultralow Drift: 3ppm/C Typical ence utilizing thin film technology and a greatly improved Series or Shunt Operation curvature correction technique. Wafer level trimming of Curvature Corrected both reference and output voltage combines to produce Ultrahigh Line Rejection: 0.5ppm/V very low TC and tight initial output voltage tolerance. Low Output Impedance: 0.02 The LT1019 can both sink and source up to 10mA and can Plug-In Replacement for Present References be used in either the series or shunt mode, allowing the Available at 2.5V, 4.5V, 5V, and 10V reference to operate with positive or negative output 100% Noise Tested voltages without external components. Minimum input/ Temperature Output output voltage is less than 1V in the series mode, providing Industrial Temperature Range in SO-8 improved tolerance of low line conditions and excellent Available in 8-Lead N8 and S8 Packages line regulation. U APPLICATIO S The LT1019 is available in four voltages: 2.5V, 4.5V, 5V and 10V. It is a direct replacement for most bandgap Negative Shunt References references presently available including AD580, AD581, A/D and D/A Converters REF-01, REF-02, MC1400, MC1404 and LM168. Precision Regulators , LTC and LT are registered trademarks of Linear Technology Corporation. Constant Current Sources All other trademarks are the property of their respective owners. V/F Converters Bridge Excitation TYPICAL APPLICATION Output Voltage Drift Ultralinear Strain Gauge 15V 357* 0.5W 5V 1.003 R3 10ppm/C IN OUT 1.002 2M FULL TEMP RANGE BOX 350 LT1019-5 BRIDGE 1.001 R2 GND 20k LT1019 CURVE 1.000 A1 A2 R4 GAIN = 100 LT1637 LT1001 20k + 0.999 5ppm/C 0C TO 70C BOX ACTIVE ELEMENT R5 0.998 UNCOMPENSATED 2M R6** STANDARD BANDGAP 2M DRIFT CURVE 0.997 50 25 0 25 50 75 100 125 LT1019 TA01 5V TEMPERATURE (C) 357* *REDUCES REFERENCE AND AMPLIFIER 1019 TA02 0.5W LOADING TO 0. **IF R6 = R3, BRIDGE IS NOT LOADED BY R2 AND R4. 15V A1 V AND DRIFT ARE NOT CRITICAL BECAUSE A2 OS ACTS AS A DIFFERENTIAL AMPLIFIER. 1019fd 1 OUTPUT VOLTAGE (NORMALIZED) (V) + U ULT1019 ABSOLUTEXAI U RATI GS (Note 1) Specified Temperature Range Input Voltage .......................................................... 40V Commercial ............................................. 0C to 70C Output Voltage (Note 2) Industrial ............................................ 40C to 85C LT1019-5, LT1019-10 ........................................ 16V Military ............................................. 55C to 125C LT1019-2.5, LT1019-4.5 ...................................... 7V Trim Pin Voltage ................................................... 30V Output Short-Circuit Duration (Note 2) Temp Pin Voltage ..................................................... 5V V < 20V .................................................... Indefinite IN Storage Temperature Range (Note 11) 65C to 150C 20V V 35V ............................................. 10 sec IN Lead Temperature (Soldering, 10 sec)................. 300C /O PACKAGE RDER I FOR ATIO TOP VIEW TOP VIEW TOP VIEW DNC* 8 DNC* 1 DNC* 8 DNC* 1 8 DNC* DNC* 1 7 DNC* INPUT 2 7 DNC* INPUT DNC* 2 7 INPUT 2 6 OUTPUT TEMP 3 OUTPUT 6 TEMP 3 6 OUTPUT GND 4 5 TRIM GND 4 5 TRIM TEMP 3 5 TRIM 4 N8 PACKAGE S8 PACKAGE GND (CASE) 8-LEAD PDIP 8-LEAD PLASTIC SO H PACKAGE *INTERNALLY CONNECTED. DO NOT *INTERNALLY CONNECTED. DO NOT 8-LEAD TO-5 METAL CAN CONNECT EXTERNALLY. CONNECT EXTERNALLY. *INTERNALLY CONNECTED. DO NOT CONNECT EXTERNALLY T = 100C, = 130C/ W T = 100C, = 130C/ W JMAX JA JMAX JA T = 150C, = 150C/ W, = 45C/W JMAX JA JC ORDER PART ORDER PART ORDER PART S8 PART NUMBER NUMBER MARKING NUMBER LT1019CH-2.5 LT1019ACN8-2.5 LT1019ACS8-2.5 019A25 LT1019ACH-2.5 LT1019CN8-5 LT1019ACH-4.5 LT1019CH-4.5 LT1019ACN8-4.5 LT1019CN8-10 LT1019ACS8-5 1019A5 LT1019CH-5 LT1019ACN8-5 LT1019AIS8-2.5 19AI25 LT1019ACH-5 LT1019IN8-2.5 LT1019ACH-10 LT1019CH-10 LT1019ACN8-10 LT1019IN8-4.5 LT1019AIS8-5 019AI5 LT1019MH-2.5 LT1019CN8-2.5 LT1019CS8-2.5 1925 LT1019AMH-2.5 LT1019IN8-5 LT1019AMH-4.5 LT1019MH-4.5 LT1019CN8-4.5 LT1019IN8-10 LT1019CS8-4.5 1945 LT1019MH-5 LT1019CS8-5 1905 LT1019AMH-5 LT1019AMH-10 LT1019MH-10 LT1019CS8-10 1910 LT1019IS8-2.5 19I25 OBSOLETE LT1019IS8-5 19I05 CONSIDER THE N8 OR S8 FOR ALTERNATE SOURCES. 1019fd 2 U WU U W W W