Intersil Announce New 24-bit ADCs Featuring Industry’s Highest Measurement Accuracy

The ADCs’ wide PGA gain range facilitates direct connection to load cells, thermocouples and other popular sensors with a wide variety of sensitivities. The devices feature best-in-class noise performance through their entire output word rate range from 2.5 to 4,000SPS, delivering system flexibility unmatched by competitive devices. The ISL26102 and ISL26104 provide two-channel and four-channel input multiplexers, respectively, and are designed for instrumentation such as weighing systems and temperature monitoring and control. They provide designers of these precision instruments the ability to digitize, with unmatched accuracy, small signals from low cost sensors, without the added cost and complexity of external amplifiers and signal conditioning circuits.



Features and Specifications:



•Low Noise: Less than 8nV/√Hz at 128x gain

•Low Power: 50mW power dissipation during conversions and 1μA shutdown mode

•Low side power switch lets users shut off load cell current to reduce consumption

•Robust ESD rating exceeds 8kV HBM

•Bidirectional SPI-compatible serial digital interfaces enables easy connection to an MCU or FPGA



Integration with Intersil’s Low-Noise Precision Products



The ISL26102 and ISL26104 complement Intersil’s industry-leading portfolio of low-noise, precision signal path products. At the Renesas DevCon 2012, Intersil demonstrated a precision temperature and strain gauge AFE paired with a RL78/G13 Renesas microcontroller. In addition to the ISL26102, this reference design combined the ISL28617 40V Instrumentation Amplifier, ISL21090, low noise precision voltage reference, ISL28134, 5V Low Noise Zero-Drift Op Amp, and ISL22317 DCP to create turnkey solutions for both temperature and strain applications.



Pricing and Availability



The ISL26102 and ISL26104 are available now in 24-lead TSSOP packages and are priced at $5.45 and $5.95 each, respectively, in 1,000-unit quantities.