LT1019CS8-2.5#PBF

Voltage Reference Overview

The LT1019CS8-2.5#PBF is a precision shunt voltage reference IC manufactured by Analog Devices Inc., offering a fixed output of 2.5V with an initial accuracy of ±0.2%. It operates within an input voltage range of 4V to 40V and draws a supply current of 1.5mA, while supporting a maximum cathode current of 800µA and an output current of 10mA. The device features a low noise profile of 2.5ppm peak-to-peak from 0.1Hz to 10Hz and maintains a temperature coefficient of 20ppm/°C across the commercial operating temperature range of 0°C to 70°C. Packaged in an 8-SOIC surface-mount housing, it provides stable reference performance for sensitive analog circuits.

Voltage Reference Feature Summary

• Provides high-precision fixed voltage reference with tight initial tolerance
• Features ultra-low low-frequency noise characteristics for signal integrity
• Operates as a shunt regulator with wide input voltage capability
• Delivers stable performance across standard commercial temperature ranges

Voltage Reference Applications

• Precision analog-to-digital converter (ADC) reference inputs
• High-resolution digital-to-analog converter (DAC) voltage sources
• Calibration standards for measurement instrumentation
• Battery-powered sensing systems requiring low power consumption

Voltage Reference Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and RoHS3 adherence before procurement. Confirm the package type matches the 8-SOIC footprint requirements for your PCB layout. Ensure the operating environment stays within the specified 0°C to 70°C commercial temperature range. Check for any recent product change notices regarding marking or material declarations. Validate that the 2.5V output aligns with your system's reference voltage needs.

Voltage Reference Selection Notes

Select this component when a fixed 2.5V reference is required with minimal low-frequency noise. Consider the 800µA minimum cathode current requirement for proper regulation. Evaluate the 20ppm/°C temperature coefficient against your thermal stability requirements. Compare the 1.5mA supply current against battery life constraints in portable designs. Ensure the 8-SOIC package fits within your available board space constraints.

Voltage Reference Part Context

This part belongs to the LT1019 series of precision shunt voltage references from Analog Devices. The series includes various fixed output voltages such as 2.5V, 4.5V, and 5V, all sharing similar electrical characteristics and packaging options. The CS8 variant specifically denotes the commercial temperature grade and SOIC-8 surface-mount package configuration.

Voltage Reference Replacement Considerations

LT1019CS8-2.5#TRPBF offers the same electrical specifications in tape-and-reel packaging for automated assembly.