LTC1291CCN8#PBF

ADCs/DACs - Special Purpose Overview

The LTC1291CCN8#PBF is a single-chip 12-bit data acquisition system manufactured by Analog Devices Inc. It integrates a successive approximation A/D converter, an analog multiplexer, and a sample-and-hold circuit within an 8-lead plastic DIP package. The device operates on a single 5V supply, utilizing VCC as the reference voltage. It features a serial interface compatible with most microprocessor ports, supporting both single-ended and differential input configurations. Key electrical specifications include a maximum conversion time of 12μs, a typical active supply current of 6.0mA, and a shutdown current of 10μA maximum.

ADCs/DACs - Special Purpose Feature Summary

• 12-bit resolution with unipolar A/D conversion using switched capacitor technology
• Integrated two-channel analog multiplexer with sample-and-hold on the positive input
• Direct 3-wire or 4-wire serial interface to microprocessors without external hardware
• Power shutdown capability reducing supply current to 10μA maximum

ADCs/DACs - Special Purpose Applications

• Remote data acquisition systems requiring minimal interconnects
• Microprocessor-based industrial control and monitoring
• Battery-powered instrumentation benefiting from low power consumption

ADCs/DACs - Special Purpose Procurement Notes

Verify that the component matches the specific CCN8 suffix for commercial temperature range (0°C to 70°C) and plastic DIP packaging. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure ordering details align with the exact part number to avoid functional discrepancies associated with different grade or package variants.

ADCs/DACs - Special Purpose Selection Notes

Select this component when a compact 12-bit ADC with integrated multiplexing is required for single-supply applications. The device is suitable for designs where direct interfacing with standard MPU serial ports simplifies board layout. Consider the 100pF input capacitance and source resistance limitations when designing analog front-ends to ensure proper settling times during the sampling phase.

ADCs/DACs - Special Purpose Part Context

This part belongs to the LTC1291 family of single-chip data acquisition systems. The CCN8 designation indicates the commercial temperature grade and the 8-lead plastic dual in-line package. Other variants in the series include BCN8 and DCN8, which differ primarily in temperature range and performance specifications. The device replaces older discrete ADC and MUX solutions by integrating these functions into a single small footprint.

ADCs/DACs - Special Purpose Replacement Considerations

Consult Analog Devices marketing for parts specified with wider operating temperature ranges if environmental conditions exceed the commercial limit. The J8 ceramic DIP package is listed as obsolete; the N8 plastic package is recommended as the alternate source.