ISL26104AVZ-T7A

Analog To Digital Converters (ADC) Overview

The ISL26104AVZ-T7A is a 24-bit Delta-Sigma Analog-to-Digital Converter (ADC) featuring an integrated low-noise programmable gain amplifier (PGA). It provides four differential, multiplexed inputs and supports conversion rates from 2.5 Sps to 4 kSps. The device offers PGA gains ranging from 1 to 128, enabling direct connection of sensors such as load cell bridges without external signal conditioning. It delivers up to 21.5 bits of noise-free performance at 10 Sps. Power specifications include 50 mW consumption during conversion and 1 μA in shutdown mode. The component operates within an automotive temperature range of -40°C to +105°C and utilizes a serial interface for communication.

Analog To Digital Converters (ADC) Feature Summary

• Integrates a low-noise programmable gain amplifier with gains up to 128x to support high-precision measurements directly from low-level sensors.
• Features a 3rd-order Delta-Sigma modulator providing exceptional noise performance and up to 21.5 bits of noise-free resolution.
• Includes a bidirectional SPI-compatible serial digital interface for straightforward connectivity with microcontrollers or FPGAs.
• Offers low-side power switching capability to allow users to disable current to connected sensor units, reducing overall system power consumption.

Analog To Digital Converters (ADC) Applications

• Weighing systems requiring high precision and direct sensor interfacing.
• Temperature monitoring and control instrumentation utilizing thermocouples or RTDs.
• Strain gauge and pressure sensor measurement applications.

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix AVZ-T7A against official Renesas documentation to confirm package type, tape-and-reel quantity, and RoHS compliance status. Ensure the operating environment remains within the specified -40°C to +105°C automotive temperature range. Confirm that the required input voltage levels match the device's 5V reference specification. Check for any recent lifecycle changes or long-term supply program (PLP) designations affecting availability.

Analog To Digital Converters (ADC) Selection Notes

Select this component when designing systems that require high-resolution digitization of low-voltage signals from bridge sensors or thermocouples. The integrated PGA eliminates the need for external amplifiers, simplifying the analog front-end design. Consider the 4-channel multiplexing capability if multiple sensor inputs are needed within a single channel constraint. Evaluate the trade-off between data rate and noise performance, as higher speeds may reduce effective resolution below the maximum 21.5 bits.

Analog To Digital Converters (ADC) Part Context

The ISL26104 is part of the Intersil product line acquired by Renesas Electronics. It belongs to a family of precision signal chain devices designed for industrial and automotive applications. This specific model represents a quad-channel variant, complementing the dual-channel ISL26102. Both devices share similar internal architectures but differ in input channel count, allowing designers to scale complexity based on application requirements.

Analog To Digital Converters (ADC) Replacement Considerations

The ISL26102 serves as a functional substitute if only two differential channels are required, sharing identical electrical characteristics and pinout compatibility regarding control signals. Verify that the replacement part number matches the exact package style and suffix requirements for your manufacturing process.