LT1634 Micropower Precision Shunt Voltage Reference Fea T Descrip T n Initial Voltage Accuracy: 0.05% The LT 1634 is a micropower, precision, shunt voltage n Low Operating Current: 10A reference. The bandgap reference uses trimmed precision n Low Drift: 10ppm/C Max thin film resistors to achieve 0.05% initial voltage accura - n Less Than 1 Dynamic Impedance cy. Improved curvature correction technique guarantees n Both Commercial and Industrial Temperature Range 10ppm/C maximum temperature drift. Advances in Parts Are Available design, processing and packaging techniques guarantee n Available in 1.25V, 2.5V, 4.096V and 5V in SO-8 10A operation and low temperature cycling hysteresis. and TO-92 Packages The LT1634 does not require an output compensation n 1.25V and 2.5V Available in MSOP Package capacitor, but is stable with capacitive loads. Low dynamic impedance makes the LT1634 reference easy to use from unregulated supplies. a T The LT1634 reference can be used as a high performance n Portable Meters upgrade to the LM185/LM385, LT1004 and LT1034 where n Precision Regulators lower power and guaranteed temperature drift is n A/D and D/A Converters required. n Calibrators L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Typical a T Super Accurate 4.096V Output References Temperature Drift 5V 45k 2.0 + I = 10A R V OUT V = 1.25V LT1495 LT1634-4.096 1.5 OUT 4.096V 1.0 5V 0.5 5V 4 0 LTC 1043 5 6 0.5 I = 200A S 1.0 OUTPUT ACCURACY 1F BETTER THAN 0.075% AT 500A OUTPUT 1.5 15 18 17 2.0 40 20 0 20 40 60 80 100 5V TEMPERATURE (C) 1634 TA02 5V V OUT LT1495 4.096V + 1F 5V 1634 TA01 1634ff 1 For more information www.linear.com/LT1634 REVERSE VOLTAGE CHANGE (mV) ion pplica ions pplica ion uresLT1634 (Note 1) a Te Maxi Mu M r a T Current Operating Operating Temperature Range 1.25V ...............................................................100mA Commercial ............................................. 0C to 70C 2.5V ...................................................................50mA Industrial .............................................40C to 85C 4.096V, 5V .........................................................30mA Storage Temperature Range (Note 1) ..... 65C to 150C Forward Current .....................................................20mA Lead Temperature (Soldering, 10 sec) ...................300C pin con F T BOTTOM VIEW TOP VIEW TOP VIEW DNC* 1 8 NC*** DNC* 1 8 NC*** TEST** V GND OUT DNC* 2 7 DNC* DNC* 2 7 DNC* DNC* 3 6 V OUT 3 6 DNC* V OUT 5 TEST** GND 4 GND 4 5 TEST** MS8 PACKAGE 8-LEAD PLASTIC MSOP Z PACKAGE S8 PACKAGE T = 125C, = 250C/W JMAX JA 8-LEAD PLASTIC SO 3-LEAD PLASTIC TO-92 T = 125C, = 190C/W T = 125C, = 190C/W JMAX JA JMAX JA *Connected internally. Do Not Connect external circuitry to these pins. **The TEST pin can be left unconnected or connected to the GND pin (GND pin on Z package, Pin4 on MS8 and S8 packages) *** Not connected internally. Der in F Ma T LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION SPECIFIED TEMPERATURE RANGE LT1634BCMS8-1.25 PBF LT1634BCMS8-1.25 TRPBF LTCV 8-Lead Plastic MSOP 0C to 70C LT1634BCMS8-2.5 PBF LT1634BCMS8-2.5 TRPBF LTDF 8-Lead Plastic MSOP 0C to 70C LT1634ACS8-1.25 PBF LT1634ACS8-1.25 TRPBF 1634A1 8-Lead Plastic SO 0C to 70C LT1634ACS8-2.5 PBF LT1634ACS8-2.5 TRPBF 1634A2 8-Lead Plastic SO 0C to 70C LT1634ACS8-4.096 PBF LT1634ACS8-4.096 TRPBF 1634A4 8-Lead Plastic SO 0C to 70C LT1634ACS8-5 PBF LT1634ACS8-5 TRPBF 1634A5 8-Lead Plastic SO 0C to 70C LT1634AIS8-1.25 PBF LT1634AIS8-1.25 TRPBF 634AI1 8-Lead Plastic SO 40C to 85C LT1634AIS8-2.5 PBF LT1634AIS8-2.5 TRPBF 634AI2 8-Lead Plastic SO 40C to 85C LT1634AIS8-4.096 PBF LT1634AIS8-4.096 TRPBF 634AI4 8-Lead Plastic SO 40C to 85C LT1634AIS8-5 PBF LT1634AIS8-5 TRPBF 634AI5 8-Lead Plastic SO 40C to 85C LT1634BCS8-1.25 PBF LT1634BCS8-1.25 TRPBF 1634B1 8-Lead Plastic SO 0C to 70C LT1634BCS8-2.5 PBF LT1634BCS8-2.5 TRPBF 1634B2 8-Lead Plastic SO 0C to 70C LT1634BCS8-4.096 PBF LT1634BCS8-4.096 TRPBF 1634B4 8-Lead Plastic SO 0C to 70C LT1634BCS8-5 PBF LT1634BCS8-5 TRPBF 1634B5 8-Lead Plastic SO 0C to 70C LT1634BIS8-1.25 PBF LT1634BIS8-1.25 TRPBF 634BI1 8-Lead Plastic SO 40C to 85C LT1634BIS8-2.5 PBF LT1634BIS8-2.5 TRPBF 634BI2 8-Lead Plastic SO 40C to 85C LT1634BIS8-4.096 PBF LT1634BIS8-4.096 TRPBF 634BI4 8-Lead Plastic SO 40C to 85C LT1634BIS8-5 PBF LT1634BIS8-5 TRPBF 634BI5 8-Lead Plastic SO 40C to 85C LT1634CCZ-1.25 PBF LT1634CCZ-1.25 TRPBF 3-Lead Plastic TO-92 0C to 70C LT1634CCZ-2.5 PBF LT1634CCZ-2.5 TRPBF 3-Lead Plastic TO-92 0C to 70C LT1634CCZ-4.096 PBF LT1634CCZ-4.096 TRPBF 3-Lead Plastic TO-92 0C to 70C LT1634CCZ-5 PBF LT1634CCZ-5 TRPBF 3-Lead Plastic TO-92 0C to 70C Consult LTC Marketing for parts specified with wider operating temperature ranges. Consult LTC Marketing for information on lead based finish parts. For more information on lead free part marking, go to: