LT1009 Datasheet, PDF (1/8 Pages) Texas Instruments – 2.5-V INTEGRATED REFERENCE CIRCUITS

LT1009
2.5-V INTEGRATED REFERENCE CIRCUITS
D Excellent Temperature Stability
D Initial Tolerance . . . 0.2% Max
D Dynamic Impedance . . . 0.6 Ω Max
D Wide Operating Current Range
D Directly Interchangeable With LM136
D Needs No Adjustment for Minimum
Temperature Coefficient
D Surface-Mount Three-Lead Package
SLVS013G – MAY 1987 – REVISED NOVEMBER 1999
D PACKAGE
(TOP VIEW)
NC 1
NC 2
NC 3
ANODE 4
8 CATHODE
7 NC
6 CATHODE
5 ADJ
NC – No internal connection
description
The LT1009 reference circuit is a
precision-trimmed 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.
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.
LP PACKAGE
(TOP VIEW)
ANODE
CATHODE
ADJ
logic symbol
ANODE
ADJ
CATHODE
The LT1009 uses include 5-V system references, 8-bit ADC and 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.
AVAILABLE OPTIONS
PACKAGED DEVICES
CHIP
TA
SMALL
OUTLINE
PLASTIC
CYLINDRICAL
FORM
(Y)
(D)
(LP)
0°C to 70°C
– 40°C to 85°C
LT1009CD
LT1009ID
LT1009CLP
LT1009ILP
LT1009Y
The D and LP packages are available taped and reeled. Add the suffix R to device
type (e.g., LT1009CDR). Chip forms are tested at 25°C.
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 Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
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Copyright © 1999, Texas Instruments Incorporated
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