LTC2420CS8#PBF Datasheet PDF - Linear Technology

●The LTC2420CS8#PBF is a micropower 20-bit Analog-to-digital Converter (ADC) with an integrated oscillator. It uses delta-sigma technology and provides a digital filter that settles in a single cycle for multiplexed applications. Through a single pin, the ADC can be configured for better than 110dB rejection at 50/60Hz±2% or it can be driven by an external oscillator for user-defined rejection frequency in the range 1 to 800Hz. The internal oscillator requires no external frequency setting components. The converter accepts any external reference voltage from 0.1V to VCC. With its extended input conversion range of -12.5% to 112.5%VREF, the ADC smoothly resolves the offset and over-range problems of preceding sensors or signal conditioning circuits. The ADC communicates through a flexible 3-wire digital interface which is compatible with SPI and MICROWIRE™ protocols.

● Digital filter settles in a single cycle

● Each conversion is accurate, even after an input step

● Internal oscillator - no external components required

● Low supply current and auto shutdown

● Pin compatible with 24-bit LTC2400