LTC1278-4ISW#PBF

Analog To Digital Converters (ADC) Overview

The LTC1278-4ISW#PBF is a 12-bit successive approximation analog-to-digital converter with a maximum sampling rate of 400ksps. It operates from a single +5V supply or dual ±5V supplies, consuming 75mW during active conversion and 8.5mW in shutdown mode. The device integrates a 200ns sample-and-hold circuit, an internally trimmed clock, and a precision 2.42V reference. Key electrical specifications include ±1LSB integral and differential nonlinearity, 70dB signal-to-noise plus distortion ratio at 100kHz input, and a full power bandwidth of 4MHz. It features a flexible parallel interface compatible with DSPs and microprocessors.

Analog To Digital Converters (ADC) Feature Summary

• 12-bit resolution with no missing codes over temperature
• Internal synchronized clock eliminates external clock noise issues
• Power-down feature with instant wake-up capability
• Flexible parallel interface with separate conversion start and data ready signals

Analog To Digital Converters (ADC) Applications

• High speed data acquisition systems
• Digital signal processing applications
• Multiplexed data acquisition systems
• Audio and telecom processing
• Spectrum analysis

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific speed grade suffix '-4' indicates the 400ksps variant, distinct from the -5 grade. Confirm the 'I' suffix denotes the industrial temperature range (-40°C to +85°C). Ensure the '#PBF' suffix confirms lead-free and RoHS compliance status as per manufacturer standards.

Analog To Digital Converters (ADC) Selection Notes

Select this component for applications requiring moderate throughput up to 400ksps with low power consumption. The internal reference simplifies design by removing external voltage reference components. Consider the 24-pin SOIC package constraints for board layout. Verify that the 400ksps speed meets system timing requirements compared to the faster 500ksps alternative.

Analog To Digital Converters (ADC) Part Context

This part belongs to the LTC1278 family of 12-bit ADCs. The '-4' suffix specifies the 400ksps performance grade, while '-5' denotes 500ksps. The 'ISW' designation identifies the industrial temperature range and 24-lead plastic SOIC wide package. This series is designed for easy interfacing with digital systems through its integrated clock and control logic.

Analog To Digital Converters (ADC) Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.