Texas Instruments LT1009
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 and PW packages. The reference tolerance is achieved by on-chip trimming, which minimizes the initial voltage tolerance and the temperature coefficient, αVZ.| Part No. | LT1009 |
|---|---|
| Datasheet | LT1009 Download |
| Manufacturer |  Texas Instruments |
| Description | 2.5-V INTEGRATED REFERENCE CIRCUIT |
| Buy | Stock & Price |
FEATURES
1● Excellent Temperature Stability
● Initial Tolerance: 0.2% Max
● Dynamic Impedance: 0.6 Ω Max D OR PW PACKAGE (TOP VIEW)
● Wide Operating Current Range
● Directly Interchangeable With LM136
● Needs No Adjustment for Minimum Temperature Coefficient LP PACKAGE (TOP VIEW) NC 1 NC 2 NC 3 ANODE 4 8 CATHODE 7 NC 6 CATHODE 5 ADJ ANODE CATHODE ADJ NC − No internal connection
DESCRIPTION
/ORDERING INFORMATION 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.
