LTC2492IDE#PBF

LTC®2492 is a 4-channel (2-channel differential), 24bit, No Latency ∆∑™ ADC with Easy Drive technology. The patented sampling scheme eliminates dynamic input current errors and the shortcomings of on-chip buffering through automatic cancellation of differential input current. This allows large external source impedances and rail-to-rail input signals to be directly digitized while maintaining exceptional DC accuracy. The LTC2492 includes a high-accuracy temperature sensor and an integrated oscillator. This device can be configured to measure an external signal (from combinations of 4 analog input channels operating in single-ended or differential modes) or its internal temperature sensor. It can be programmed to reject line frequencies of 50Hz, 60Hz, or simultaneous 50Hz/60Hz and configured to double its output rate. Typical applications include direct sensor digitizer, direct temperature measurement, instrumentation and industrial process control.

• Directly digitizes high-impedance sensors with full accuracy
• 600nV rms noise
• Integrated high-accuracy temperature sensor
• GND to VCC input/reference common mode range
• 2ppm INL, no missing codes and 1ppm offset and 15ppm full-scale error
• 2x speed mode/reduced power mode (15Hz using internal oscillator and 80µA at 7.5Hz output)
• No latency: digital filter settles in a single cycle, even after a new channel is selected
• Single supply 2.7V to 5.5V operation (0.8mw) and internal oscillator
• 14 lead DFN package
• Operating temperature range from -40°C to 85°C

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party