LT1009CH

Voltage Reference Overview

The LT1009CH is a precision trimmed 2.5V shunt regulator diode manufactured by Analog Devices Inc. It features a maximum initial tolerance of ±5mV and operates within a temperature range of 0°C to 70°C. The device utilizes on-chip trimming to minimize initial voltage tolerance and temperature drift, ensuring high stability. It offers a wide operating current range from 400μA to 10mA with low dynamic impedance. The component is housed in a TO-46 metal can package with three pins.

Voltage Reference Feature Summary

• Precision on-chip trimming ensures minimal initial voltage tolerance and reduced temperature drift for stable reference performance.
• Wide operating current range supports versatile integration across varying load conditions without external adjustment requirements.
• Third terminal allows reference voltage adjustment of ±5% to calibrate out system errors when necessary.

Voltage Reference Applications

• 5-V system voltage references
• 8-bit analog-to-digital converter (ADC) references
• Digital voltmeter circuits

Voltage Reference Procurement Notes

Verify the specific manufacturer source, as the LT1009CH designation may indicate legacy Linear Technology stock or Texas Instruments production under license. Confirm RoHS compliance status and exact package pinout compatibility before integration. Ensure the supplier provides valid traceability documentation for this specific part number variant.

Voltage Reference Selection Notes

Select the LT1009CH for applications requiring a stable 2.5V reference with moderate temperature stability. Consider the TO-46 package constraints for thermal management and mechanical mounting. Evaluate if the ±5% adjustability feature meets calibration needs compared to fixed-output alternatives.

Voltage Reference Part Context

The LT1009 series serves as a high-precision two-terminal voltage reference designed for accuracy-critical analog circuits. It functions as a shunt regulator, maintaining a constant voltage drop across its terminals despite current variations. This family replaces older discrete reference solutions with integrated, trimmed semiconductor devices.

Voltage Reference Replacement Considerations

The LT1009 can serve as a pin-to-pin replacement for the LM136, allowing elimination of external trim networks in existing designs.