LTC2420CS8#PBF

LTC2420CS8#PBF is a micropower 20bit A/D converter with an integrated oscillator, 8ppm INL and 1.2ppm RMS noise that operates from 2.7V to 5.5V. It uses delta-sigma technology and provides a digital filter that settles in a single cycle for multiplexed applications. The internal oscillator requires no external frequency setting components. The LTC2420 communicates through a flexible 3-wire digital interface which is compatible with SPI and MICROWIRE™ protocols. Typical applications include weight scales, direct temperature measurement, gas analysers, strain gauge transducers, instrumentation, data acquisition, industrial process control, 4-digit DVMs.

• 8ppm inl, no missing codes at 20 bits and 4ppm full-scale error 0.5ppm offset and 1.2ppm noise
• Digital filter settles in a single cycle each conversion is accurate, even after an input step
• Fast mode: 16bit noise, 12 bits TUE at 100sps
• Internal oscillator no external components required
• 110db min, 50Hz/60Hz notch filter
• Live zero-extended input range accommodates 12.5% over-range and underrange
• Single supply 2.7V to 5.5V operation and reference input voltage: 0.1V to VCC
• Low supply current (200µA) and auto shutdown and pin compatible with 24bit LTC2400
• 8 lead NSOIC package
• Operating temperature range from 0°C to 70°C

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