LTC2487CDE#PBF

LTC®2487 is a 4-channel (2 differential), 16bit, no Latency ∆S™ ADC with easy drive technology and a 2-wire, I2C interface. The patented sampling scheme eliminates dynamic input current errors and the short comings 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 LTC2487 includes programmable gain, a high accuracy temperature sensor and an integrated oscillator. This device can be configured to measure an external signal (from combinations of 4 analogue input channels operating in single-ended or differential modes) or its internal temperature sensor. 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 and programmable gain from 1 to 256
• Integrated high accuracy temperature sensor
• GND to VCC input/reference common mode range
• Programmable 50Hz, 60Hz or simultaneous 50Hz/60Hz rejection mode
• 2ppmINL, no missing codes and 1ppm offset and 15ppm full-scale error
• 2x speed/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 0°C to 70°C

附註

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