AD780CR-REEL7

Overview

The AD780CR-REEL7 is a series precision voltage reference IC manufactured by Analog Devices Inc. It provides fixed output voltages of ±2.5 V and ±3 V with an initial accuracy tolerance of ±0.06% and ±0.17%. The device operates within a supply voltage range of 4 V to 36 V and draws a supply current of 1 mA. It features a maximum shunt current of 10 mA and a temperature coefficient of 7 ppm/°C. Noise performance is specified at 4 µVp-p from 0.1 Hz to 10 Hz. The component is housed in an 8-SOIC package and supports operation temperatures from -40°C to +85°C.

Feature Summary

• Provides high-precision series voltage references with tight initial accuracy tolerances for critical analog applications.
• Operates over a wide input supply voltage range up to 36 V, accommodating various system power architectures.
• Delivers low noise performance suitable for sensitive signal conditioning and data acquisition circuits.

Applications

• Precision analog-to-digital converter (ADC) reference sources
• High-accuracy instrumentation amplifier biasing
• Data acquisition systems requiring stable voltage benchmarks

Procurement Notes

Verify the specific suffix configuration against official Analog Devices documentation to confirm pinout compatibility and electrical specifications. Confirm RoHS compliance status and manufacturing origin details prior to integration. Ensure the selected package variant matches the intended PCB footprint and thermal management requirements for the target application environment.

Selection Notes

Select this component when a stable, low-noise series reference is required for dual-polarity or single-supply systems operating within the specified voltage range. Consider the ±0.06% initial accuracy and 7 ppm/°C temperature coefficient for applications demanding high long-term stability. Evaluate the 8-SOIC package constraints against available board space and thermal dissipation needs.

Part Context

This part belongs to the AD780 family of ultrahigh precision bandgap voltage references. The family includes variants with different accuracy grades and temperature ranges, such as the AD780ARZ and AD780BR. The CR designation typically indicates a commercial temperature grade variant within this precision reference lineup.

Replacement Considerations

Official substitutes include AD780ARZ-REEL7 and AD780BR-REEL7. Verify that the alternative part number meets the specific accuracy, temperature range, and package requirements of the original design before substitution.