ISL267440IHZ-T7A

Analog To Digital Converters (ADC) Overview

The ISL267440IHZ-T7A is a 10-bit, 1MSPS sampling rate Successive Approximation Register (SAR) Analog-to-Digital Converter manufactured by Renesas Electronics. It features a fully-differential input with high impedance to minimize leakage current errors and maintains accuracy with input signals up to the supply rails. The device operates on a single analog and digital power supply ranging from 2.7V to 5.25V. It includes an external reference input accepting voltages from 0.1V to 2.2V for 3V operation or 0.1V to 3.5V for 5V operation. Power consumption is 8.5mW at full sampling rate and drops to 5µW in Auto Power-Down mode. It offers up to 8kV Human Body Model ESD protection and utilizes an SPI-compatible serial interface.

Analog To Digital Converters (ADC) Feature Summary

• Fully-differential input architecture providing high impedance to reduce measurement errors caused by leakage currents.
• SPI-compatible serial digital interface enabling direct connection to standard microcontrollers and FPGAs.
• Integrated Auto Power-Down mode significantly reduces power dissipation between conversion cycles.
• Robust electrostatic discharge protection rated up to 8kV via the Human Body Model.

Analog To Digital Converters (ADC) Applications

• Remote industrial sensor data acquisition
• Battery-powered portable instruments
• Industrial process control systems
• Energy measurement devices

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'T7A' corresponds to the tape and reel packaging configuration required for automated assembly processes. Confirm that the component status remains active or assess end-of-life notices if sourcing for long-term production. Ensure the operating temperature range of -40°C to +85°C aligns with the environmental specifications of the target application system.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a 10-bit resolution is sufficient for the application requirements, offering a balance between performance and cost compared to higher-resolution alternatives. The SAR architecture provides fast conversion speeds suitable for moderate bandwidth applications. Consider the external reference voltage flexibility when designing the power management circuitry to optimize noise performance and dynamic range within the available supply constraints.

Analog To Digital Converters (ADC) Part Context

This part belongs to the ISL267440/50A series of SAR ADCs. It serves as a drop-in replacement for the AD7440, facilitating migration from legacy designs. The series shares architectural similarities with the 12-bit ISL267450A, differing primarily in resolution while maintaining identical pinouts and software compatibility.

Analog To Digital Converters (ADC) Replacement Considerations

The AD7440 is a confirmed compatible substitute due to drop-in compatibility. Designers migrating from other manufacturers should verify register mapping and timing parameters despite package equivalence.