LTC2488IDE#PBF

Product Summary

The LTC2488IDE#PBF is an Analog -to- Digital Converter. The LTC2488IDE#PBF is a 4-channel (2-channel differential), 16- bit, No Latency ΔΣ™ 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-torail input signals to be directly digitized while maintaining exceptional DC accuracy. The LTC2488IDE#PBF includes 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. It automatically rejects line frequencies of 50Hz and 60Hz simultaneously. The LTC2488IDE#PBF allows a wide common mode, input range (0V to VCC), independent of the reference voltage. Any combination of single-ended or differential inputs can be selected and the fi rst conversion after a new channel selection is valid. The applications of the LTC2488IDE#PBF include Direct Sensor Digitizer, Direct Temperature Measurement, Instrumentation and Industrial Process Control.

Parametrics

LTC2488IDE#PBF absolute maximum ratings: (1)Supply Voltage (VCC): –0.3V to 6V; (2)Analog Input Voltage (CH0 to CH3, COM): –0.3V to (VCC + 0.3V); (3)REF+, REF–: –0.3V to (VCC + 0.3V); (4)Digital Input Voltage: –0.3V to (VCC + 0.3V); (5)Digital Output Voltage: –0.3V to (VCC + 0.3V); (6)Operating Temperature Range: –40℃ to 85℃; (7)Storage Temperature Range: –65℃ to 150℃.

Features

LTC2488IDE#PBF features: (1)Up to 2 Differential or 4 Single-Ended Inputs; (2)Easy Drive Technology Enables Rail-to-Rail Inputs with Zero Differential Input Current; (3)Directly Digitizes High Impedance Sensors with Full Accuracy; (4)600nV RMS Noise (0.02LSB Transition Noise); (5)GND to VCC Input/Reference Common Mode Range; (6)Simultaneous 50Hz/60Hz Rejection; (7)2ppm INL, No Missing Codes; (8)1ppm Offset and 15ppm Full-Scale Error; (9)No Latency: Digital Filter Settles in a Single Cycle, Even After a New Channel is Selected; (10)Single Supply 2.7V to 5.5V Operation (0.8mW); (11)Internal Oscillator; (12)Tiny 4mm × 3mm DFN Package.

Diagrams