ADC14V155CISQ/NOPB

Analog To Digital Converters (ADC) Overview

The ADC14V155CISQ/NOPB is a 14-bit, 155 MSPS analog-to-digital converter manufactured by Texas Instruments (formerly National Semiconductor). It features a 1.1 GHz input bandwidth and utilizes a pipeline architecture. The device supports differential or single-ended inputs with LVDS outputs. Power specifications include a 3.3 V analog supply and a 1.8 V digital supply. Key performance metrics include a Signal-to-Noise Ratio (SNR) of 72.3 dB, an Effective Number of Bits (ENOB) of 11.5 bits, and a Differential Nonlinearity (DNL) of 0.5 LSB. It operates within a temperature range of -40°C to +85°C and is housed in a WQFN-48 package.

Analog To Digital Converters (ADC) Feature Summary

• High-speed conversion capability at 155 MSPS with a 1.1 GHz analog input bandwidth
• Integrated low-voltage differential signaling (LVDS) output drivers for high-speed data transfer
• Flexible input configuration supporting both differential and single-ended signal types
• Low power consumption design optimized for high-performance data acquisition systems

Analog To Digital Converters (ADC) Applications

• Software-defined radio (SDR) front-end digitization
• Instrumentation and test equipment requiring high-resolution sampling
• Medical imaging systems such as ultrasound and CT scanners
• Wideband communication system receivers

Analog To Digital Converters (ADC) Procurement Notes

Verify the manufacturer designation carefully, as this component originates from National Semiconductor, which was acquired by Texas Instruments. Ensure the specific suffix 'NOPB' is included in part numbers to confirm RoHS compliance and lead-free status. Cross-reference datasheets between National Semiconductor archives and Texas Instruments current documentation to ensure pinout and electrical parameter consistency. Confirm that the WQFN-48 package dimensions match your PCB footprint requirements before ordering.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a balance of high resolution and extreme speed is required for wideband signals. The 1.1 GHz bandwidth allows for direct sampling of high-frequency carriers without intermediate frequency stages. Consider the LVDS output interface if long trace lengths or noise immunity are critical design constraints. Evaluate the 1.8 V digital supply requirement against your system's logic levels to determine if level shifting is necessary for interfacing with standard 3.3 V processors.

Analog To Digital Converters (ADC) Part Context

This device belongs to the ADC14V155 series, designed for demanding applications where high dynamic range and fast sampling rates are essential. It represents a transition period product linking National Semiconductor's legacy portfolio with Texas Instruments' current offerings. The series is characterized by its pipeline architecture, which provides efficient throughput for continuous data streams. It serves as a bridge component for engineers migrating from older National Semiconductor designs to modern TI-supported ecosystems.

Analog To Digital Converters (ADC) Replacement Considerations

The ADC14155CISQ/NOPB is a related variant within the same family but lacks the LVDS outputs specified for the CISQ model. Verify interface compatibility before substitution, as the output driver type differs significantly. Other members of the ADC14V155 family may offer different packaging options or slight performance variations. Always consult the official datasheet to confirm functional equivalence regarding pinouts and electrical characteristics.