LTC2255IUH#TRPBF

Analog To Digital Converters (ADC) Overview

The LTC2255IUH#TRPBF is a 14-bit, 125Msps low-power analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It operates on a single 3V supply (2.85V to 3.4V) and dissipates 395mW at full speed. The device features a flexible input range of 1VP-P to 2VP-P, selectable via the SENSE pin, and includes an internal reference. Key performance metrics include a Signal-to-Noise Ratio (SNR) of 72.4dB and Spurious Free Dynamic Range (SFDR) of 88dB at a 5MHz input frequency. It utilizes a pipelined architecture with a 5-cycle latency and is housed in a 32-pin QFN package.

Analog To Digital Converters (ADC) Feature Summary

• 14-bit resolution with no missing codes over temperature
• 125Msps sampling rate with 640MHz full power bandwidth
• Single 3V supply operation with separate output driver supply (OVDD)
• Integrated clock duty cycle stabilizer for high-performance operation

Analog To Digital Converters (ADC) Applications

• Wireless and wired broadband communication systems
• Imaging systems requiring high dynamic range
• Ultrasound medical equipment
• Spectral analysis instruments
• Portable instrumentation

Analog To Digital Converters (ADC) Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status as indicated in official documentation. Check for lead-free marking consistency with the #PBF suffix designation. Ensure storage conditions adhere to specified humidity sensitivity levels to prevent package damage prior to assembly.

Analog To Digital Converters (ADC) Selection Notes

Select the LTC2255 variant for 125Msps throughput; use LTC2254 for 105Msps requirements. Ensure the analog input drive circuit supports the differential configuration for optimal SNR and SFDR. Verify that the source impedance remains below 100Ω per input to minimize harmonic distortion. Confirm OVDD voltage compatibility with downstream logic levels ranging from 0.5V to 3.6V.

Analog To Digital Converters (ADC) Part Context

This component belongs to the LTC225x family of low-power 3V ADCs. It is pin-compatible with other members such as the LTC2253 (12-bit), LTC2252 (12-bit), and LTC2254 (14-bit). The family covers sampling rates from 10Msps to 125Msps, allowing design flexibility across various bandwidth applications while maintaining consistent interface and pinout characteristics.

Analog To Digital Converters (ADC) Replacement Considerations

Direct substitutes within the same package and functionality include the LTC2254IUH#TRPBF (105Msps version). Other pin-compatible options in the family are the LTC2253IUH#TRPBF (12-bit, 125Msps) and LTC2252IUH#TRPBF (12-bit, 105Msps). Verify bit-resolution and sampling rate requirements before substitution.