LT1009_06 Datasheet, PDF (1/17 Pages) Texas Instruments – 2.5-V INTEGRATED REFERENCE CIRCUIT

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LT1009
2.5-V INTEGRATED REFERENCE CIRCUIT
SLVS013L – MAY 1987 – REVISED SEPTEMBER 2005
FEATURES
• Excellent Temperature Stability
• Initial Tolerance…0.2% Max
• Dynamic Impedance…0.6 Ω Max
• Wide Operating Current Range
• Directly Interchangeable With LM136
• Needs No Adjustment for Minimum
Temperature Coefficient
D OR PW PACKAGE
(TOP VIEW)
NC 1
NC 2
NC 3
ANODE 4
8 CATHODE
7 NC
6 CATHODE
5 ADJ
NC − No internal connection
DESCRIPTION/ORDERING INFORMATION
LP PACKAGE
The LT1009 reference circuit is a precision-trimmed
(TOP VIEW)
2.5-V shunt regulator featuring low dynamic
impedance and a wide operating current range. The
maximum initial tolerance is ±5 mV in the LP package
and ±10 mV in the D package. The reference
tolerance is achieved by on-chip trimming, which
minimizes the initial voltage tolerance and the
temperature coefficient, α_VZ.
ANODE
CATHODE
ADJ
<br/>
Although the LT1009 needs no adjustments, a third terminal (ADJ) allows the reference voltage to be adjusted
±5% to eliminate system errors. In many applications, the LT1009 can be used as a terminal-for-terminal
replacement for the LM136-2.5, which eliminates the external trim network.
The LT1009 uses include 5-V system references, 8-bit analog-to-digital converter (ADC) and digital-to-analog
converter (DAC) references, and power-supply monitors. The device also can be used in applications such as
digital voltmeters and current-loop measurement and control systems.
The LT1009C is characterized for operation from 0°C to 70°C. The LT1009I is characterized for operation from
–40°C to 85°C.
T_A
0°C to 70°C
–40°C to 85°C
ORDERING INFORMATION
PACKAGE ⁽¹⁾
ORDERABLE PART NUMBER
SOIC – D
Tube of 75
Reel of 2500
LT1009CD
LT1009CDR
Bulk of 1000
LT1009CLP
TO-226/TO-92 – LP
Ammo of 2000
LT1009CLPM
Reel of 2000
LT1009CLPR
TSSOP – PW
Tube of 150
Reel of 2000
LT1009CPW
LT1009CPWR
SOIC – D
Tube of 75
Reel of 2500
LT1009ID
LT1009IDR
Bulk of 1000
LT1009ILP
TO-226/TO-92 – LP
Ammo of 2000
LT1009ILPM
Reel of 2000
LT1009ILPR
TSSOP – PW
Tube of 150
Reel of 2000
LT1009IPW
LT1009IPWR
TOP-SIDE MARKING
1009C
LT1009C
1009C
1009I
LT1009I
1009I
(1) Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at
www.ti.com/sc/package.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 1987–2005, Texas Instruments Incorporated