LT1009M_15 Datasheet, PDF (1/11 Pages) Texas Instruments – 2.5-V INTEGRATED REFERENCE CIRCUIT

LT1009M
www.ti.com
SLVS925A – APRIL 2009 – REVISED JULY 2013
2.5-V INTEGRATED REFERENCE CIRCUIT
Check for Samples: LT1009M
FEATURES
1
• Excellent Temperature Stability
• Initial Tolerance: 0.2% Typical
• Dynamic Impedance: 0.6 Ω Typical
• Wide Operating Current Range
• Directly Interchangeable With LM136
• Needs No Adjustment for Minimum
Temperature Coefficient
• Available in Military (–55°C/125°C)
Temperature Range ⁽¹⁾
(1) Custom temperature ranges available
DESCRIPTION/ORDERING INFORMATION
The LT1009 reference circuit is a precision-trimmed 2.5-V shunt regulator featuring low dynamic impedance and
a wide operating current range. 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.
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 LT1009 is characterized for operation from –55°C to 125°C.
Figure 1. SYMBOL
ANODE
CATHODE
ADJ
T_A
–55°C to 125°C
ORDERING INFORMATION⁽¹⁾
PACKAGE(BARE DIE)⁽²⁾
CHIPTRAY
ORDERABLE PART NUMBER
LT1009MKGD1
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
web site at www.ti.com.
(2) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.
BARE DIE INFORMATION
DIE THICKNESS
15 Mils
BACKSIDE FINISH
Silicon with backgrind
BOND PAD METALIZATION
COMPOSITION
AlCu/TiW
1
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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.
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