BANGALORE, INDIA: Texas Instruments Inc. (TI) has introduced two new bipolar, 12-bit, 1-MSPS successive approximation register (SAR) analog-to-digital converters (ADC) for industrial process controls (PLC) and data acquisition.
The 4-channel ADS8634 and 8-channel ADS8638 provide the widest temperature range available for demanding industrial measurement applications up to 125 degrees and are fully characterized over the extended industrial temperature range. They also allow an input range of ±12 V, an improvement of 20 percent over the competition, when used with an external reference.
Key features and benefits of ADS8634 and ADS8638
• Per-channel software-selectable input ranges support ±12 V, ±10 V, ±5 V, ±2.5 V, 0-5 V, and 0-10 V, providing a single-chip solution for a wide range of inputs while enabling designers to easily interface to a variety of sensors with a single ADC.
• 1-MSPS sampling rate – a 4x improvement from the previous generation.
• Digital interface supports 1.8-V to 5-V hosts without additional level-shifting circuitry.
• Integrated reference and temperature sensor reduces system cost and complexity.
The addition of dual-alarm threshold logic per channel and alarm output minimizes the number of host accesses required in monitoring applications.
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