AD1580BKSZ-REEL7

Overview

The AD1580BKSZ-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% and a maximum temperature drift of 50 ppm/°C. The device operates within a wide current range from 50 µA to 10 mA and features low noise characteristics, including 20 µV rms in the 10 Hz to 10 kHz bandwidth. Designed for industrial applications, it functions reliably across a temperature range of −40°C to +85°C. The component is housed in a compact SC-70 surface-mount package.

Feature Summary

• Utilizes proprietary curvature correction techniques to minimize voltage output nonlinearity over temperature variations.
• Maintains stability with any value of capacitive load without requiring external isolation resistors for standard operation.
• Features high electrostatic discharge (ESD) protection ratings, ensuring robustness against human body and machine model events.

Applications

• Portable, battery-powered equipment
• Cellular phones, notebook computers, PDAs, GPSs, and DMMs
• 3 V/5 V, 8-bit to 12-bit data converters

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 distributor catalogs to ensure availability and correct pinout configuration for the SC-70 package.

Selection Notes

Select this component when a precise 1.225 V reference is required in space-constrained designs utilizing the SC-70 package. The B-grade specification offers tighter initial accuracy compared to the A-grade variant. Consider the minimum operating current of 50 µA for low-power battery applications. Evaluate the dynamic output impedance and noise performance requirements against the datasheet specifications to ensure compatibility with sensitive analog front-end circuits.

Part Context

The AD1580 series includes variants such as the AD1580ARTZ and AD1580BRTZ, which utilize the SOT-23 package. The AD1580BKSZ-REEL7 specifically denotes the B-grade version packaged in the smaller SC-70 form factor. This family of devices serves as a cost-effective solution for precision bandgap references in portable electronics and industrial instrumentation where size and power consumption are critical design constraints.

Replacement Considerations

Direct substitutes include other AD1580 variants like the AD1580BKSZ-REEL or AD1580BRTZ-REEL7, provided the package type difference is accommodated in the PCB layout. Verify that alternative components match the 1.225 V output voltage and SC-70 footprint if physical replacement is necessary.