16-Bit 8-/16-Channel ADC
LTC2497
16-Bit 8-/16-Channel
DS
ADC with Easy Drive Cancellation and
Input Current I2C Interface
Features
n Up to ...
Description
LTC2497
16-Bit 8-/16-Channel
DS
ADC with Easy Drive Cancellation and
Input Current I2C Interface
Features
n Up to Eight Differential or 16 Single-Ended Inputs n Easy DriveTM Technology Enables Rail-to-Rail
Inputs with Zero Differential Input Current n Directly Digitizes High Impedance Sensors with
Full Accuracy n 2-Wire I2C Interface with 27 Addresses Plus One
Global Address for Synchronization n 600nV RMS Noise (0.02LSB Transition Noise) n GND to VCC Input/Reference Common Mode Range n Simultaneous 50Hz/60Hz Rejection n 2ppm INL, No Missing Codes n 1ppm Offset and 15ppm Full-Scale Error n No Latency: Digital Filter Settles in a Single Cycle,
Even After a New Channel Is Selected n Single Supply, 2.7V to 5.5V Operation (0.8mW) n Internal Oscillator n Tiny 5mm × 7mm QFN Package
Applications
n Direct Sensor Digitizer n Direct Temperature Measurement n Instrumentation n Industrial Process Control
Description
The LTC®2497 is a 16-channel (eight differential), 16-bit, No Latency DSTM ADC with Easy Drive technology and a 2-wire, I2C interface. 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 LTC2497 includes an integrated oscillator. This device can be configured to measure an external signal f...
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