LM12458CIVF

ADCs/DACs - Special Purpose Overview

The LM12458CIVF is a 13-bit resolution data acquisition system manufactured by National Semiconductor, now part of Texas Instruments. It integrates a 12-bit-plus-sign sampling analog-to-digital converter with self-calibration capabilities on a single chip. The device includes a 32-word FIFO and instruction memory to simplify digital-analog interfacing. It operates within a supply voltage range of 3 V to 5.5 V, with a nominal rating of 5 V. The component supports an industrial temperature range from -40°C to +85°C and is housed in a 44-lead Plastic Quad Flat Package (PQCC44) with a 1.27 mm pin pitch.

ADCs/DACs - Special Purpose Feature Summary

• Integrates a 12-bit-plus-sign ADC with self-calibration functionality
• Includes on-chip 32-word FIFO and instruction memory for simplified system design
• Operates on a single 5 V supply (range: 3 V to 5.5 V)
• Available in a 44-lead PQCC surface-mount package

ADCs/DACs - Special Purpose Applications

• Data Acquisition Systems (DAS)
• Industrial process control monitoring
• Test and measurement equipment requiring high-resolution analog input

ADCs/DACs - Special Purpose Procurement Notes

Verify the manufacturer status, as National Semiconductor was acquired by Texas Instruments. Confirm the specific suffix 'CIVF' corresponds to the PQCC44 package and industrial temperature grade (-40°C to +85°C). Ensure compatibility with existing PCB footprints for the 44-lead quad flat package before procurement.

ADCs/DACs - Special Purpose Selection Notes

Select this component when a complete 13-bit data acquisition solution with integrated buffering is required. The self-calibrating ADC reduces external calibration needs. Compare against the LM12454 if lower channel counts or different memory configurations are sufficient for the application.

ADCs/DACs - Special Purpose Part Context

This device belongs to the LM1245x family of data acquisition systems. It shares architectural similarities with the LM12454 but offers specific integration levels suitable for complex DAS environments. The technology represents National Semiconductor's approach to combining analog conversion and digital logic on a single die.

ADCs/DACs - Special Purpose Replacement Considerations

Check for direct equivalents such as the LM12454 if functional requirements allow. Verify pinout compatibility with Texas Instruments versions (e.g., LM12458CIVX/NOPB) to ensure mechanical interchangeability.