AD1582BRT-REEL7

Voltage Reference Overview

The AD1582BRT-REEL7 is a micropower, precision series mode voltage reference manufactured by Analog Devices Inc. It provides a fixed output voltage of 2.5 V with an initial accuracy of ±0.08% and a temperature coefficient of 50 ppm/°C. The device operates within a supply range from VOUT + 200 mV to 12 V, drawing a maximum quiescent current of 70 µA. It supports load currents up to ±5 mA and functions reliably across a specified temperature range of −40°C to +125°C.

Voltage Reference Feature Summary

• Series mode architecture enables sourcing or sinking up to 5 mA of load current while maintaining stable regulation.
• Patented temperature drift curvature correction design minimizes nonlinearities in the voltage output temperature characteristic.
• Low dropout operation requires only 200 mV of headroom above the output voltage for efficient performance.
• Compact SOT-23 surface-mount package facilitates integration into space-constrained portable and battery-powered designs.

Voltage Reference Applications

• Portable, battery-powered equipment such as notebook computers, cellular phones, pagers, PDAs, GPSs, and DMMs
• Computer workstations suitable for use with a wide range of video RAMDACs
• Smart industrial transmitters
• PCMCIA cards
• Automotive systems

Voltage Reference Procurement Notes

Verify that the ordering suffix RTZ corresponds to the RoHS-compliant lead-free variant if required by your assembly process. Confirm the specific grade (A or B) matches your accuracy requirements, as the base model number does not indicate tolerance. Ensure the reel packaging format aligns with your pick-and-place equipment capabilities. Cross-reference the datasheet revision J specifications against your system's thermal and electrical constraints before finalizing procurement.

Voltage Reference Selection Notes

Select this component when a low-power, high-accuracy reference is needed for 3 V or 5 V systems with varying supply voltages. The series topology offers superior power efficiency compared to conventional shunt devices by eliminating wasted current through input resistors. Consider the AD1582 specifically for applications requiring a precise 2.5 V output. Evaluate the 50 ppm/°C temperature coefficient against your system's total error budget over the operating temperature range.

Voltage Reference Part Context

This part belongs to the AD158x family of micropower, precision band gap references, which includes the AD1583 (3 V), AD1584 (4.096 V), and AD1585 (5 V). All members share similar architectural features, including low quiescent current and compact SOT-23 packaging. The AD1582 is distinguished by its 2.5 V output voltage, making it suitable for specific logic levels and sensor interfaces requiring this standard reference potential.

Voltage Reference Replacement Considerations

Direct functional substitutes within the same family include the AD1583ART, AD1584ART, and AD1585ART for different voltage outputs. For pin-compatible replacements with potentially updated specifications, consult the manufacturer's current product selector guide for any successor devices in the micropower reference category.