ISL267450IBZ-T

Analog To Digital Converters (ADC) Overview

The ISL267450IBZ-T is a 12-bit, 1MSPS sampling SAR-type Analog-to-Digital Converter (ADC) manufactured by Renesas Electronics Corporation. It features excellent linearity over supply and temperature variations and is drop-in compatible with the AD7450A. The device utilizes a robust, fully-differential input offering high impedance to minimize leakage current errors, maintaining specified measurement accuracy with input signals up to the supply rails. It supports reference inputs from 0.1V to 3.5V for 5V operation. Power dissipation is 8.5mW at 1MSPS and drops to 5µW in Auto Power-Down mode. The component operates within the Industrial temperature range of –40 °C to +85 °C and is housed in an 8-lead MSOP package.

Analog To Digital Converters (ADC) Feature Summary

• Drop-in compatible with AD7450A for simplified design integration
• Robust fully-differential input maintains accuracy up to supply rails
• SPI-compatible serial digital interface for easy FPGA and microcontroller interfacing
• High ESD survivability rated at up to 8kV Human Body Model

Analog To Digital Converters (ADC) Applications

• Remote Data Acquisition Systems
• Battery Operated Instruments
• Industrial Process Control
• Pressure Sensors
• Flow Controllers

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'IBZ-T' against official Renesas documentation to confirm the tape-and-reel packaging format and industrial temperature grade. Ensure compatibility with existing AD7450A footprints if used as a direct replacement. Confirm that the 5V supply rail requirements align with system power constraints, given the 8.5mW active power dissipation specification.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a 12-bit resolution and 1MSPS sampling rate are required for industrial applications. It is suitable for designs needing high input impedance and rail-to-rail signal handling capabilities. Consider the Auto Power-Down feature for battery-operated systems requiring ultra-low standby power consumption of 5µW. Verify SPI interface compatibility with the host controller before finalizing the selection.

Analog To Digital Converters (ADC) Part Context

The ISL267450IBZ-T belongs to the ISL2674xx family of SAR ADCs, which also includes the 10-bit ISL267440 variant. This family is designed to provide high performance in a compact form factor, targeting cost-sensitive industrial and sensor applications. The devices share similar pinouts and functional characteristics, allowing for flexible design choices based on resolution requirements while maintaining consistent interface and power management features.

Analog To Digital Converters (ADC) Replacement Considerations

The ISL267450IBZ-T is officially documented as drop-in compatible with the AD7450A. Designers replacing legacy components should verify that the AD7450A footprint matches the 8-lead MSOP package of the ISL267450IBZ-T. No additional external components are typically required due to the integrated reference input flexibility.