LT6656
1A Precision Series
Voltage Reference
FEATURES
DESCRIPTION
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Ultralow Supply Current: 850nA
The LT 6656 is a tiny precision voltage reference that
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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-
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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.
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Long-Term Drift: 15ppm/kHr (LS8 Package)
The LT6656 can supply up to 5mA of output drive with
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No Humidity Sensitivity (LS8 Package)
65ppm/mA of load regulation, allowing it to be used as
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High Output Drive Current: 5mA Min
the supply voltage and the reference input to a low power
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Low Dropout Voltage: 10mV Max
ADC. The LT6656 can accept a supply voltage up to 18V
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Fully Specified from 40C to 85C
and withstand the reversal of the input connections.
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Operational from 55C to 125C
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Wide Supply Range to 18V The LT6656 output is stable with 1F or larger output
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Reverse Input/Output Protection capacitance and operates with a wide range of output
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Available Output Voltage Options: capacitor ESR.
1.25V, 2.048V, 2.5V, 3V, 3.3V, 4.096V and 5V
This reference is fully specified for operation from 40C
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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
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Precision A/D and D/A Converters
2mm) DFN, and 8-lead LS8 Packages. The LS8 is a 5mm
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Portable Gas Monitors
5mm surface mount hermetic package that provides
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Battery- or Solar-Powered Systems
outstanding stability.
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Precision Regulators
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
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Low Voltage Signal Processing
ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property
of their respective owners.
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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)
6656fc
1
For more information www.linear.com/LT6656
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 ......................... Indenfi ite
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
NC 1 6 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
6656fc
2
For more information www.linear.com/LT6656