LT1461 Reference Datasheet

LT1461 Datasheet PDF, Equivalent


Part Number

LT1461

Description

Voltage Reference

Manufacture

Analog Devices

Total Page 18 Pages
PDF Download
Download LT1461 Datasheet PDF


LT1461
LT1461
Micropower Precision
Low Dropout Series
Voltage Reference Family
FEATURES
nn Trimmed to High Accuracy: 0.04% Max
nn Low Drift: 3ppm/°C Max
nn Low Supply Current: 50µA Max
nn High Output Current: 50mA Min
nn Low Dropout Voltage: 300mV Max
nn Excellent Thermal Regulation
nn Power Shutdown
nn Thermal Limiting
nn All Parts Guaranteed Functional from –40°C to 125°C
nn Voltage Options: 2.5V, 3V, 3.3V, 4.096V and 5V
nn AEC-Q100 Qualified for Automotive Applications
APPLICATIONS
nn A/D and D/A Converters
nn Precision Regulators
nn Handheld Instruments
nn Power Supplies
DESCRIPTION
The LT®1461 is a family of low dropout micropower band-
gap references that combine very high accuracy and low
drift with low supply current and high output drive. These
series references use advanced curvature compensation
techniques to obtain low temperature coefficient and
trimmed precision thin-film resistors to achieve high
output accuracy. The LT1461 family draws only 35µA
of supply current, making them ideal for low power and
portable applications, however their high 50mA output
drive makes them suitable for higher power requirements,
such as precision regulators.
In low power applications, a dropout voltage of less than
300mV ensures maximum battery life while maintaining
full reference performance. Line regulation is nearly im-
measurable, while the exceedingly good load and ther-
mal regulation will not add significantly to system error
budgets. The shutdown feature can be used to switch full
load currents and can be used for system power down.
Thermal shutdown protects the part from overload condi-
tions. The LT1461 is available in 2.5V, 3V, 3.3V 4.096V
and 5V options.
All registered trademarks and trademarks are the property of their respective owners.
TYPICAL APPLICATION
Basic Connection
(VOUT + 0.3V) ≤ VIN ≤ 20V
CIN
1µF
LT1461
VOUT
CL
2µF
1461 TA01
LT1461-2.5 Load Regulation, PDISS = 200mW
0mA
VOUT
20mA
VOUT LOAD REG
1mV/DIV
10ms/DIV
1461 TA02
Document Feedback
For more information www.analog.com
Rev. C
1

LT1461
LT1461
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Input Voltage .............................................................20V
Output Short-Circuit Duration........................... Indefinite
Operating Temperature Range
(Note 2).............................................. –40°C to 125°C
Storage Temperature Range (Note 3)...... –65°C to 150°C
Specified Temperature Range
Commercial.............................................. 0°C to 70°C
Industrial..............................................–40°C to 85°C
High.................................................... –40°C to 125°C
Lead Temperature (Soldering, 10 sec).................... 300°C
PIN CONFIGURATION
TOP VIEW
DNC* 1
VIN 2
SHDN 3
GND 4
8 DNC*
7 DNC*
6 VOUT
5 DNC*
S8 PACKAGE
8-LEAD PLASTIC SO
*DNC: DO NOT CONNECT
TJMAX = 150°C, θJA = 190°C/W
(Note 3)
ORDER INFORMATION
LEAD FREE FINISH
LT1461ACS8-2.5#PBF
LT1461ACS8-3#PBF
LT1461ACS8-3.3#PBF
LT1461ACS8-4#PBF
LT1461ACS8-5#PBF
LT1461BCS8-2.5#PBF
LT1461BCS8-3#PBF
LT1461BCS8-3.3#PBF
LT1461BCS8-4#PBF
LT1461BCS8-5#PBF
LT1461CCS8-2.5#PBF
LT1461CCS8-3#PBF
LT1461CCS8-3.3#PBF
LT1461CCS8-4#PBF
LT1461CCS8-5#PBF
LT1461AIS8-2.5#PBF
LT1461AIS8-3#PBF
LT1461AIS8-3.3#PBF
LT1461AIS8-4#PBF
LT1461AIS8-5#PBF
LT1461BIS8-2.5#PBF
LT1461BIS8-3#PBF
LT1461BIS8-3.3#PBF
LT1461BIS8-4#PBF
LT1461BIS8-5#PBF
LT1461CIS8-2.5#PBF
LT1461CIS8-3#PBF
LT1461CIS8-3.3#PBF
TAPE AND REEL
LT1461ACS8-2.5#TRPBF
LT1461ACS8-3#TRPBF
LT1461ACS8-3.3#TRPBF
LT1461ACS8-4#TRPBF
LT1461ACS8-5#TRPBF
LT1461BCS8-2.5#TRPBF
LT1461BCS8-3#TRPBF
LT1461BCS8-3.3#TRPBF
LT1461BCS8-4#TRPBF
LT1461BCS8-5#TRPBF
LT1461CCS8-2.5#TRPBF
LT1461CCS8-3#TRPBF
LT1461CCS8-3.3#TRPBF
LT1461CCS8-4#TRPBF
LT1461CCS8-5#TRPBF
LT1461AIS8-2.5#TRPBF
LT1461AIS8-3#TRPBF
LT1461AIS8-3.3#TRPBF
LT1461AIS8-4#TRPBF
LT1461AIS8-5#TRPBF
LT1461BIS8-2.5#TRPBF
LT1461BIS8-3#TRPBF
LT1461BIS8-3.3#TRPBF
LT1461BIS8-4#TRPBF
LT1461BIS8-5#TRPBF
LT1461CIS8-2.5#TRPBF
LT1461CIS8-3#TRPBF
LT1461CIS8-3.3#TRPBF
2
PART MARKING
461A25
1461A3
461A33
1461A4
1461A5
461B25
1461B3
461B33
1461B4
1461B5
461C25
1461C3
461C33
1461C4
1461C5
61AI25
461AI3
61AI33
461AI4
461AI5
61BI25
461BI3
61BI33
461BI4
461BI5
61CI25
461CI3
61CI33
PACKAGE DESCRIPTION
8-LEAD PLASTIC SO
8-LEAD PLASTIC SO
8-LEAD PLASTIC SO
8-LEAD PLASTIC SO
8-LEAD PLASTIC SO
8-LEAD PLASTIC SO
8-LEAD PLASTIC SO
8-LEAD PLASTIC SO
8-LEAD PLASTIC SO
8-LEAD PLASTIC SO
8-LEAD PLASTIC SO
8-LEAD PLASTIC SO
8-LEAD PLASTIC SO
8-LEAD PLASTIC SO
8-LEAD PLASTIC SO
8-LEAD PLASTIC SO
8-LEAD PLASTIC SO
8-LEAD PLASTIC SO
8-LEAD PLASTIC SO
8-LEAD PLASTIC SO
8-LEAD PLASTIC SO
8-LEAD PLASTIC SO
8-LEAD PLASTIC SO
8-LEAD PLASTIC SO
8-LEAD PLASTIC SO
8-LEAD PLASTIC SO
8-LEAD PLASTIC SO
8-LEAD PLASTIC SO
For more information www.analog.com
SPECIFIED TEMPERATURE RANGE
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
–40°C to 85°C
–40°C to 85°C
–40°C to 85°C
–40°C to 85°C
–40°C to 85°C
–40°C to 85°C
–40°C to 85°C
–40°C to 85°C
–40°C to 85°C
–40°C to 85°C
–40°C to 85°C
–40°C to 85°C
–40°C to 85°C
Rev. C


Features LT1461 Micropower Precision Low Dropout Series Voltage Reference Family FEATUR ES nn Trimmed to High Accuracy: 0.04% M ax nn Low Drift: 3ppm/°C Max nn Low Su pply Current: 50µA Max nn High Output Current: 50mA Min nn Low Dropout Voltag e: 300mV Max nn Excellent Thermal Regul ation nn Power Shutdown nn Thermal Limi ting nn All Parts Guaranteed Functional from –40°C to 125°C nn Voltage Opt ions: 2.5V, 3V, 3.3V, 4.096V and 5V nn AEC-Q100 Qualified for Automotive Appli cations APPLICATIONS nn A/D and D/A Con verters nn Precision Regulators nn Hand held Instruments nn Power Supplies DES CRIPTION The LT®1461 is a family of lo w dropout micropower bandgap references that combine very high accuracy and lo w drift with low supply current and hig h output drive. These series references use advanced curvature compensation te chniques to obtain low temperature coef ficient and trimmed precision thin-film resistors to achieve high output accur acy. The LT1461 family draws only 35µA of supply current, making them .
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