 Linear Technology Corporation introduces the LTC2499, a 16-channel delta-sigma analog-to-digital converter (ADC) that communicates via an I2C-compatible serial interface and includes a unique analog input architecture. The LTC2499’s Easy Drive(TM) front-end design results in zero average differential input current, allowing measurements of high impedance input sources without the use of an internal buffer. This patented sampling scheme simplifies the design of front-end signal conditioning circuits and allows the ADC to be driven directly from bridges, RTDs, thermocouples and high impedance sensors. Rail-to-rail input signals can be directly digitized while maintaining excellent DC accuracy (2ppm INL).
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