LTC1274CSW#PBF

Analog To Digital Converters (ADC) Overview

The LTC1274CSW#PBF is a 12-bit successive approximation analog-to-digital converter (ADC) from Analog Devices, housed in a 24-lead SOIC package. It operates on a single 5V supply or ±5V supplies, consuming 10mW at a sampling rate of 100ksps. The device features an internal 2.42V reference and a 2µs sample-and-hold circuit. Key electrical parameters include a signal-to-noise plus distortion ratio of 72.5dB at 100kHz input, full power bandwidth of 2MHz, and integral/differential linearity errors within ±1 LSB. It supports unipolar (0V to 4.096V) and bipolar (±2.048V) input ranges with parallel data output.

Analog To Digital Converters (ADC) Feature Summary

• Low power consumption of 10mW at 100ksps with 1µA shutdown current in Sleep mode
• Internal precision 2.42V reference capable of being overdriven for input span adjustment
• High dynamic performance with 72.5dB S/(N+D) and 82dB THD at 100kHz input frequency
• Supports undersampling with inputs beyond Nyquist frequency

Analog To Digital Converters (ADC) Applications

• Battery-powered portable systems
• High-speed data acquisition for PCs
• Multiplexed data acquisition systems
• Audio and telecom processing
• Spectrum analysis

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix #PBF indicates RoHS compliance and lead-free termination when sourcing. Confirm the CS variant meets commercial temperature requirements (0°C to 70°C). Ensure interface logic levels match the 5V VDD supply as the LTC1274 does not feature a separate VLOGIC pin like the LTC1277.

Analog To Digital Converters (ADC) Selection Notes

Select the LTC1274CSW#PBF for single-ended input applications requiring a parallel interface. Choose this part over the LTC1277 if differential inputs are not required, as the LTC1274 offers a simpler 12-bit parallel format without the need for high-byte enable signals. Verify that the 24-lead SOIC package fits the PCB footprint constraints.

Analog To Digital Converters (ADC) Part Context

This component belongs to the LTC1274/LTC1274 family of low-power, 12-bit ADCs. The 'C' designation specifies the commercial temperature range (0°C to 70°C), while 'I' would indicate industrial range (-40°C to 85°C). The '#PBF' suffix denotes Pb-free packaging compliant with RoHS standards.

Analog To Digital Converters (ADC) Replacement Considerations

Public confirmed substitute part numbers: None identified in verified documentation.