LTC1273BCSW#PBF

Analog To Digital Converters (ADC) Overview

The LTC1273BCSW#PBF is a 12-bit, 300ksps sampling analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It operates on a single 5V supply and accepts unipolar analog input voltages ranging from 0V to 5V. The device integrates a precision 2.42V reference with 25ppm/°C drift, an internal synchronized clock, and a 600ns sample-and-hold circuit. Typical power dissipation is 75mW. Key performance metrics include ±1/2LSB maximum integral nonlinearity (INL), ±3/4LSB maximum differential nonlinearity (DNL), 70dB signal-to-noise plus distortion ratio at Nyquist, and 77dB total harmonic distortion. It utilizes a high-speed parallel interface for data output.

Analog To Digital Converters (ADC) Feature Summary

• 12-bit resolution with 300ksps sampling rate
• Integrated 2.42V reference and internal clock
• Unipolar 0V to 5V input range on single 5V supply
• ±1/2LSB INL and ±3/4LSB DNL (B Grade)
• 75mW typical power dissipation

Analog To Digital Converters (ADC) Applications

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

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific B grade linearity specifications against the official datasheet before procurement. Confirm that the SW package variant matches the PCB footprint requirements. Ensure the single 5V supply capability aligns with the system design, as bipolar variants exist for different input ranges.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a single-supply 5V operation is required for unipolar signals between 0V and 5V. The B grade offers tighter linearity limits compared to the A grade. Consider the 600ns acquisition time when determining source impedance constraints. Verify that the parallel interface timing meets the microprocessor or DSP requirements.

Analog To Digital Converters (ADC) Part Context

This part belongs to the LTC1273/LTC1275/LTC1276 family of 12-bit, 300ksps sampling ADCs. The LTC1273 specifically handles unipolar inputs, while the LTC1275 and LTC1276 support bipolar inputs with dual supplies. All share similar internal architectures, including the integrated reference and clock.

Analog To Digital Converters (ADC) Replacement Considerations

Direct pin-compatible replacements within the same family include the LTC1273ACSW#PBF (A grade). Other models like the LTC1282 offer different voltage ranges or speeds but may require schematic adjustments.