AD1580BRTZ-REEL7

Overview

The AD1580BRTZ-REEL7 is a micropower, precision shunt voltage reference manufactured by Analog Devices Inc. It provides a stable 1.225 V output with an initial accuracy of ±0.1% maximum and a temperature drift of ±50 ppm/°C maximum over the industrial range of −40°C to +85°C. The device operates within a wide current range from 50 µA to 10 mA and features a dynamic output impedance of 0.5 Ω maximum. Noise performance includes 20 µV rms in the 10 Hz to 10 kHz bandwidth and 5 µV p-p from 0.1 Hz to 10 Hz. It utilizes a proprietary bandgap design for high stability and is housed in a compact SOT-23 surface-mount package.

Feature Summary

• Proprietary curvature correction techniques minimize non-linearities in voltage output temperature characteristics.
• Stable with any value of capacitive load without requiring isolation resistors for standard operation.
• High electrostatic discharge (ESD) protection rating of 4 kV human body model and 400 V machine model.

Applications

• Portable, battery-powered equipment
• Cellular phones, notebook computers, PDAs, GPSs, and DMMs
• Smart industrial transmitters
• PCMCIA cards
• Automotive systems

Procurement Notes

Verify the specific ordering suffix to confirm the packaging format, as REEL7 indicates tape and reel packaging. Ensure the component grade matches the required initial accuracy and temperature coefficient specifications for the target application. Confirm RoHS compliance status if environmental regulations apply to the manufacturing process. Cross-reference the manufacturer part number with official distributor catalogs to validate authenticity and availability before procurement.

Selection Notes

Select this component when a low-cost, two-terminal shunt reference is required for space-constrained designs. The B-grade specification ensures tighter initial accuracy compared to the A-grade variant. Consider the operating current range requirements; the device functions effectively at currents as low as 50 µA, making it suitable for battery-operated systems. Verify that the SOT-23 package dimensions fit the printed circuit board layout constraints.

Part Context

The AD1580 series consists of micropower, precision shunt voltage references available in both A and B grades. The B-grade version offers superior initial accuracy compared to the A-grade. Both grades are specified over the same industrial temperature range and utilize identical internal bandgap architecture. The REEL7 suffix denotes the specific tape and reel packaging configuration used for automated assembly processes.

Replacement Considerations

AD1580ARTZ-REEL7

FAQ

How does the AD1580 handle capacitive loads?

The AD1580 is designed to be stable with any value of capacitive load connected directly to its output.

What is the turn-on settling time for the AD1580?

The turn-on settling time to 0.1% is typically 5 µs when measured with no load capacitor.