Renesas ISL26134AV28EV1Z

Overview

ISL26134AV28EV1Z from Renesas Electronics is an evaluation board designed to characterize the ISL26134 24-bit precision analog-to-digital converter (ADC) under real-world conditions. It integrates galvanic isolation, on-board AT90USB162 microcontroller with USB HID interface, ISL21090BFB825Z-TK 2.5V voltage reference, and configurable gain (1x/2x/64x/128x) and word rate (10Sps/80Sps) settings - enabling high-fidelity noise, histogram, and FFT analysis of low-level sensor signals in industrial instrumentation and precision measurement systems.

For engineers reviewing the ISL26134AV28EV1Z datasheet, ISL26134AV28EV1Z pinout, ISL26134AV28EV1Z application, or ISL26134AV28EV1Z equivalent, this page delivers verified hardware architecture, jumper-configurable ADC interface options, isolated power domain partitioning, GUI-supported time/frequency/histogram analysis workflows, and factory-default jumper states for rapid validation of ISL26134 performance at 24-bit resolution and ≤128× gain.

Technical Context

The ISL26134AV28EV1Z implements a dual-domain architecture: the ADC section (ISL26134 in TSSOP-28) is powered by lab-supplied AVDD (5V), DVDD (3.3–5V), and AGND, and features banana-jack inputs, jumper-selectable gain/word rate/channel, and 2.5V reference (ISL21090BFB825Z-TK) or external reference support. Galvanic isolation via SI8441BB quad-channel digital isolator separates ADC and microcontroller domains to suppress USB-ground noise coupling into sensitive analog measurements.

The microcontroller section uses AT90USB162-16AU (TQFN-32) with integrated USB 2.0 interface, driven by USB 5V power, and communicates with the ADC through isolated SPI (SCLK/SDO/RDYb). Factory default jumpers configure Channel 1, 128× gain, 80Sps, and 2.5V common-mode bias - enabling immediate shorted-input noise testing without reconfiguration.

Key Specifications

Availability

ISL26134AV28EV1Z is available at Aetrix Electronics and suitable for precision metrology, industrial sensor calibration, and low-noise data acquisition system development requiring stable component supply, traceable sourcing, and long-term evaluation platform continuity.

Supply support for ISL26134AV28EV1Z includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Renesas Electronics is a global semiconductor leader delivering high-performance, low-power analog, mixed-signal, and embedded processing solutions for industrial, automotive, and infrastructure applications.

The ISL26134AV28EV1Z belongs to Renesas' precision data converter evaluation platform family, engineered specifically to accelerate validation of ultra-low-noise, high-resolution ADCs in demanding measurement environments where ground isolation and reference stability are critical.

FAQ

What is the primary function of the ISL26134AV28EV1Z?

The ISL26134AV28EV1Z is an evaluation board - not an IC - designed exclusively to test and characterize the ISL26134 24-bit delta-sigma ADC. It provides galvanically isolated USB communication, on-board voltage reference, jumper-configurable gain/word rate/channel selection, and PC-based GUI software for time-domain, histogram, and FFT analysis. The ISL26134AV28EV1Z enables engineers to validate ADC performance under real-world noise, layout, and signal-conditioning conditions before integration into final systems.

Does the ISL26134AV28EV1Z include the ISL26134 ADC chip?

Yes, the ISL26134AV28EV1Z ships with the ISL26134 ADC pre-soldered in TSSOP-28 package (U1). The board also supports replacement with the ISL26132 for comparative evaluation. All ADC control signals - including GAIN0/GAIN1, SPEED, PWDN, A0/A1 channel select, and SCLK/SDO/RDYb - are routed to accessible headers and jumpers, allowing full functional verification of the ISL26134's 1x/2x/64x/128x gain modes and 10Sps/80Sps word rates as specified in its datasheet.

How does galvanic isolation improve measurement accuracy on the ISL26134AV28EV1Z?

Galvanic isolation on the ISL26134AV28EV1Z - implemented using the SI8441BB quad-channel digital isolator - physically separates the noisy USB-powered microcontroller domain from the ultra-sensitive analog ADC domain. This prevents USB ground return currents and digital switching noise from coupling into the ADC's AVDD, AGND, or reference paths - a critical requirement when operating the ISL26134 at 64× or 128× gain where input-referred noise must remain below 100nV RMS. Isolation ensures clean, repeatable noise-floor measurements during grounded-input tests.

What software tools are supported for the ISL26134AV28EV1Z?

The ISL26134AV28EV1Z is supported by Renesas' Windows-based GUI software (v4), which provides three core analysis modes: time-domain capture (1–1,048,576 samples, pop-out view), histogram analysis (with mean, standard deviation, min/max markers), and frequency-domain FFT (configurable windowing, log/linear scaling, averaging). The software uses native Windows USB HID drivers - no additional driver installation is required. Raw data, histogram, and spectrum outputs can be saved in documented ASCII formats for post-processing.

What are the factory-default jumper configurations on the ISL26134AV28EV1Z?

At shipment, the ISL26134AV28EV1Z is configured with: J1/J5 set to logic 1 (A0=A1=0 → Channel 1); J29/J7 set to logic 1 (GAIN0=GAIN1=1 → 128× gain); J6 set to logic 1 (SPEED=1 → 80Sps); J22 selecting 2.5V reference as common-mode voltage; J9/J10 shorted to bias AIN1± to common-mode (enabling shorted-input noise testing); and J28/J30 selecting ISL21090 2.5V reference as VREF+/VREF−. DIP switch S2 has all four positions OFF for normal GUI operation.