LT6656 1A Precision Series Voltage Reference FEATURES DESCRIPTION n Ultralow Supply Current: 850nA The LT 6656 is a tiny precision voltage reference that n Low Drift draws less than 1A of supply current and can operate A Grade: 10 ppm/C Max with a supply voltage within 10mV of the output voltage. B Grade: 20 ppm/C Max The LT6656 offers an initial accuracy of 0.05% and tem- n High Accuracy perature drift of 10ppm/C. The combined low power and A Grade: 0.05% Max precision characteristics are ideal for portable and battery B Grade: 0.1% Max powered instrumentation. n Long-Term Drift: 15ppm/kHr (LS8 Package) The LT6656 can supply up to 5mA of output drive with n No Humidity Sensitivity (LS8 Package) 65ppm/mA of load regulation, allowing it to be used as n High Output Drive Current: 5mA Min the supply voltage and the reference input to a low power n Low Dropout Voltage: 10mV Max ADC. The LT6656 can accept a supply voltage up to 18V n Fully Specified from 40C to 85C and withstand the reversal of the input connections. n Operational from 55C to 125C n The LT6656 output is stable with 1F or larger output Wide Supply Range to 18V n capacitance and operates with a wide range of output Reverse Input/Output Protection n capacitor ESR. Available Output Voltage Options: 1.25V, 2.048V, 2.5V, 2.8V, 3V, 3.3V, 4.096V and 5V This reference is fully specified for operation from 40C n Available in Low Profile (1mm) ThinSOT, to 85C, and is functional over the extreme temperature (2mm 2mm) DFN and High Stability Hermetic range of 55C to 125C. Low hysteresis and a consistent (5mm 5mm) LS8 Packages temperature drift are obtained through advanced design, processing and packaging techniques. APPLICATIONS The LT6656 is offered in the 6-lead SOT-23, (2mm n Precision A/D and D/A Converters 2mm) DFN, and 8-lead LS8 Packages. The LS8 is a 5mm n Portable Gas Monitors 5mm surface mount hermetic package that provides n Battery- or Solar-Powered Systems outstanding stability. n Precision Regulators All registered trademarks and trademarks are the property of their respective owners. n Low Voltage Signal Processing n Micropower Remote Sensing Output Voltage Temperature Drift TYPICAL APPLICATION 2.503 38 TYPICAL UNITS LT6656-2.5 Basic Connection 2.502 LT6656-2.5 V OUT 2.51V V 18V V V IN IN OUT 2.5V 2.501 GND 0.1F 1F 2.500 6656 TA01a 2.499 2.498 40 20 0 20 40 60 80 6652 TA01b TEMPERATURE (C) Rev D 1 Document Feedback For more information www.analog.com V (V) OUTLT6656 ABSOLUTE MAXIMUM RATINGS (Note 1) Input Voltage ...........................................................20V Operating Temperature Range (Note 2).. 55C to 125C Output Voltage ........................................... 0.3V to 20V Output Short Circuit Duration ......................... Indefinite Output Voltage Above Input Voltage .........................20V Junction Temperature .......................................... 150C Specified Temperature Range (Note 2) Storage Temperature Range (Note 3) ..... 65C to 150C Commercial ............................................. 0C to 70C Lead Temperature (Soldering, 10 sec.) Industrial .............................................40C to 85C TSOT-23 (Note 4) ..............................................300C PIN CONFIGURATION TOP VIEW V IN TOP VIEW TOP VIEW 8 NC 1 7 NC 6 NC 1 V IN GND* 1 6 V OUT 7 GND 2 5 NC GND 2 5 NC NC 2 6 V OUT GND* NC 3 4 V IN GND* 3 4 V OUT GND* 3 5 V OUT 4 S6 PACKAGE 6-LEAD PLASTIC TSOT-23 DC PACKAGE GND 6-LEAD (2mm 2mm) PLASTIC DFN T = 150C, = 230C/W JMAX JA LS8 PACKAGE *CONNECT PIN TO DEVICE GND (PIN 2) T = 125C, = 102C/W JMAX JA 8-PIN LEADLESS CHIP CARRIER (5mm 5mm) EXPOSED PAD (PIN 7) MUST BE CONNECTED TO GND T = 150C, = 125C/W JMAX JA *CONNECT PIN TO DEVICE GND (PIN 4) ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL (MINI) TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION SPECIFIED TEMPERATURE RANGE LT6656ACS6-1.25 TRMPBF LT6656ACS6-1.25 TRPBF LTFNK 6-Lead Plastic TSOT-23 0C to 70C LT6656BCS6-1.25 TRMPBF LT6656BCS6-1.25 TRPBF LTFNK 6-Lead Plastic TSOT-23 0C to 70C LT6656AIS6-1.25 TRMPBF LT6656AIS6-1.25 TRPBF LTFNK 6-Lead Plastic TSOT-23 40C to 85C LT6656BIS6-1.25 TRMPBF LT6656BIS6-1.25 TRPBF LTFNK 6-Lead Plastic TSOT-23 40C to 85C LT6656ACS6-2.048 TRMPBF LT6656ACS6-2.048 TRPBF LTFNN 6-Lead Plastic TSOT-23 0C to 70C LT6656BCS6-2.048 TRMPBF LT6656BCS6-2.048 TRPBF LTFNN 6-Lead Plastic TSOT-23 0C to 70C LT6656AIS6-2.048 TRMPBF LT6656AIS6-2.048 TRPBF LTFNN 6-Lead Plastic TSOT-23 40C to 85C LT6656BIS6-2.048 TRMPBF LT6656BIS6-2.048 TRPBF LTFNN 6-Lead Plastic TSOT-23 40C to 85C LT6656ACS6-2.5 TRMPBF LT6656ACS6-2.5 TRPBF LTFGW 6-Lead Plastic TSOT-23 0C to 70C LT6656BCS6-2.5 TRMPBF LT6656BCS6-2.5 TRPBF LTFGW 6-Lead Plastic TSOT-23 0C to 70C LT6656AIS6-2.5 TRMPBF LT6656AIS6-2.5 TRPBF LTFGW 6-Lead Plastic TSOT-23 40C to 85C LT6656BIS6-2.5 TRMPBF LT6656BIS6-2.5 TRPBF LTFGW 6-Lead Plastic TSOT-23 40C to 85C LT6656ACS6-3 TRMPBF LT6656ACS6-3 TRPBF LTFNQ 6-Lead Plastic TSOT-23 0C to 70C LT6656BCS6-3 TRMPBF LT6656BCS6-3 TRPBF LTFNQ 6-Lead Plastic TSOT-23 0C to 70C LT6656AIS6-3 TRMPBF LT6656AIS6-3 TRPBF LTFNQ 6-Lead Plastic TSOT-23 40C to 85C LT6656BIS6-3 TRMPBF LT6656BIS6-3 TRPBF LTFNQ 6-Lead Plastic TSOT-23 40C to 85C LT6656ACS6-3.3 TRMPBF LT6656ACS6-3.3 TRPBF LTFNS 6-Lead Plastic TSOT-23 0C to 70C LT6656BCS6-3.3 TRMPBF LT6656BCS6-3.3 TRPBF LTFNS 6-Lead Plastic TSOT-23 0C to 70C LT6656AIS6-3.3 TRMPBF LT6656AIS6-3.3 TRPBF LTFNS 6-Lead Plastic TSOT-23 40C to 85C LT6656BIS6-3.3 TRMPBF LT6656BIS6-3.3 TRPBF LTFNS 6-Lead Plastic TSOT-23 40C to 85C Rev D 2 For more information www.analog.com