LTC1272-8CCN#PBF

Analog To Digital Converters (ADC) Overview

The LTC1272-8CCN#PBF is a 12-bit successive approximation sampling analog-to-digital converter (ADC) manufactured by Analog Devices. It operates on a single 5V supply and features an on-chip sample-and-hold circuit with a conversion time of 8µs, supporting up to 125kHz sample rates. The device includes a factory-trimmed 2.42V reference output and offers a 0V to 5V unipolar input range. Packaged in a 24-lead PDIP, it provides three-state digital outputs compatible with both 8-bit and 16-bit microprocessors.

Analog To Digital Converters (ADC) Feature Summary

• 12-bit resolution with no missing codes
• 8µs conversion time (125kHz max sample rate)
• Single 5V supply operation without negative voltage requirement
• On-chip 2.42V bandgap reference with 25ppm/°C temperature coefficient

Analog To Digital Converters (ADC) Applications

• High-speed data acquisition systems
• Multiplexed data acquisition applications
• Digital signal processing (DSP) front ends
• Single-supply measurement instruments

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific speed grade suffix '8' indicates the 8µs conversion time variant. Confirm the 'CCN' designation corresponds to the commercial temperature range (0°C to 70°C) and the 24-lead PDIP package. Ensure lead-free (#PBF) compliance matches project requirements.

Analog To Digital Converters (ADC) Selection Notes

Select this model over the -3ACN variant if system timing allows for slower 8µs conversions but requires the PDIP package. Verify that the 0V to 5V input range aligns with sensor outputs. Check that the internal 2.42V reference meets accuracy needs or plan for external reference decoupling.

Analog To Digital Converters (ADC) Part Context

This component belongs to the LTC1272 family of 12-bit ADCs. It serves as a drop-in replacement for the industry-standard AD7572, though it requires reversing the polarity of the reference bypass capacitor when used in existing AD7572 sockets due to its single-supply architecture.

Analog To Digital Converters (ADC) Replacement Considerations

LTC1272-8ACN#PBF: Same electrical specifications and speed grade, packaged in SOIC-24 instead of PDIP.