LT1019ACH-10

Voltage Reference Overview

The LT1019ACH-10 is a precision voltage reference from Analog Devices Inc. utilizing third-generation bandgap technology with thin film construction and curvature correction. It provides a fixed 10V output with an initial tolerance of 0.05% and a typical temperature coefficient of 5ppm/°C across the industrial range (-40°C to 85°C). The device operates in series or shunt modes, sourcing or sinking up to 10mA, with ultrahigh line rejection of approximately 0.5ppm/V and low output impedance near 0.02Ω.

Voltage Reference Feature Summary

• Third-generation bandgap architecture with thin film technology and curvature correction for improved stability
• Capable of both sourcing and sinking current up to 10mA in series or shunt configurations
• Features ultrahigh line rejection and low output impedance for precise regulation
• Includes a dedicated temperature output pin proportional to absolute temperature

Voltage Reference Applications

• A/D and D/A converters
• Precision regulators
• Constant current sources
• Bridge excitation circuits

Voltage Reference Procurement Notes

Verify that the specific part number matches the required package type (H8 TO-5 metal can) and temperature grade (Industrial -40°C to 85°C). Confirm the ordering suffix corresponds to the desired accuracy class (LT1019A) and output voltage (10V). Ensure compatibility with existing system designs referencing legacy bandgap parts like AD580 or LM168.

Voltage Reference Selection Notes

Select this component when high precision and low drift are critical within the industrial temperature range. The H8 package is suitable for applications requiring through-hole mounting or specific thermal characteristics associated with metal cans. Consider the available trim range if fine-tuning the output voltage is necessary for the application.

Voltage Reference Part Context

The LT1019 series serves as a direct replacement for older bandgap references such as the AD580, REF-01, and LM168. It represents an evolution in analog devices offering tighter tolerances and lower drift compared to standard industry counterparts. The LT1019ACH-10 specifically targets industrial environments requiring robust performance over extended temperature variations.

Voltage Reference Replacement Considerations

LT1019CN8-10

Voltage Reference FAQ

Can the LT1019ACH-10 operate in negative voltage configurations?

Yes, the device can be used in either series or shunt mode, allowing it to operate with positive or negative output voltages without external components.

What is the function of the TEMP pin on the LT1019?

The TEMP pin provides a voltage directly proportional to absolute temperature (PTAT) with a slope of approximately 2.1mV/°C, useful for monitoring relative temperature changes.