LTC1290CMJ

Analog To Digital Converters (ADC) Overview

The LTC1290CMJ is a single-chip 12-bit data acquisition system manufactured by Analog Devices Inc. It integrates an 8-channel analog multiplexer, a sample-and-hold circuit, and a successive approximation A/D converter. The device supports both unipolar (12-bit) and bipolar (11-bit plus sign) conversions with a maximum throughput rate of 50kHz. It operates on a single 5V supply or ±5V supplies, drawing 6.0mA during active conversion. The component features a full-duplex serial interface compatible with standard microprocessor ports and is housed in a 20-lead ceramic DIP package.

Analog To Digital Converters (ADC) Feature Summary

• Integrated 12-bit SAR ADC with 8-channel input multiplexer
• Software programmable for unipolar/bipolar modes and variable word lengths (8, 12, or 16 bits)
• Full-duplex synchronous serial interface for direct MPU connection
• Low power consumption with software-controlled power shutdown mode

Analog To Digital Converters (ADC) Applications

• Industrial process control systems requiring multi-channel signal acquisition
• Data logging equipment for environmental monitoring
• Medical instrumentation for biomedical signal recording
• Automotive test and measurement devices

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific temperature grade suffix (e.g., CMJ indicates commercial range) against project requirements. Confirm package authenticity as the J package is listed as obsolete in some contexts; consult manufacturer documentation for current availability status and lead times prior to ordering.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a high channel count is required within a single IC footprint. Ensure the application voltage does not exceed the absolute maximum ratings of 12V between VCC and GND. Verify that the source impedance allows for the required sampling frequency without introducing significant aperture error.

Analog To Digital Converters (ADC) Part Context

This part belongs to the LTC1290 family of data acquisition systems. The 'CMJ' designation identifies the specific temperature range and ceramic DIP packaging variant. Other variants include plastic SO wide and PDIP packages with different thermal characteristics and operating temperature limits.

Analog To Digital Converters (ADC) Replacement Considerations

Public confirmed substitute part numbers are not available in the provided datasheet. Consider the LTC1292 series for integrated DAC functionality or other 12-bit ADCs from the manufacturer if pin compatibility is not required.