LTC2391CLX-16#PBF

Overview

The LTC2391CLX-16#PBF is a 16-bit, 250ksps successive approximation register (SAR) analog-to-digital converter manufactured by Analog Devices Inc. It operates from a single 5V supply and supports a ±4.096V fully differential input range. The device achieves a typical signal-to-noise ratio (SNR) of 94dB at a 20kHz input frequency and guarantees no missing codes at 16 bits with a maximum integral nonlinearity (INL) of ±2LSB. It features an internal precision reference with a maximum temperature coefficient of ±20ppm/°C and dissipates 95mW at full throughput. The component is housed in a 48-lead 7mm × 7mm plastic LQFP package.

Feature Summary

• 16-bit resolution with guaranteed no missing codes and ±2LSB max INL
• 250ksps sampling rate with 94dB typical SNR at fIN = 20kHz
• Single 5V supply operation with ±4.096V differential input range
• Internal 4.096V reference with ±20ppm/°C max temperature coefficient
• Parallel and serial interface modes with 1.8V to 5V I/O voltages

Applications

• Medical Imaging
• High Speed Data Acquisition
• Digital Signal Processing
• Industrial Process Control
• Instrumentation

Procurement Notes

Verify the specific ordering suffix for the required temperature grade and packaging format. The CLX suffix indicates the commercial temperature range (0°C to 70°C) and tray packaging. Confirm that the lead-free finish (#PBF) meets environmental compliance requirements for the target assembly process. Ensure the selected variant matches the design's thermal and operational constraints.

Selection Notes

Select this component when a low noise, high-speed 16-bit ADC is required with a single 5V supply. The internal reference simplifies design but external references may be used for higher accuracy. Choose between parallel or serial interfaces based on system pin count and data throughput needs. Ensure the input signal conditioning circuit can drive the differential inputs within the specified common mode range.

Part Context

This part belongs to the LTC2391-16 family of low noise SAR ADCs. Other variants include the LTC2392-16 (0.5Msps) and LTC2393-16 (1Msps). The CLX-16 designation specifically denotes the commercial grade operating temperature range and the LQFP package form factor. It shares functional similarities with the LTC2391IUK-16 but differs in package type and temperature rating.

Replacement Considerations

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