LTC2385IUH-16#PBF

Overview

The LTC2385IUH-16#PBF is a 16-bit, 5Msps successive approximation register (SAR) analog-to-digital converter manufactured by Analog Devices Inc. It operates from 5V and 2.5V supplies with a typical power dissipation of 78mW at full throughput. The device features a serial LVDS digital interface supporting one-lane or two-lane output modes for optimized data rates. Key electrical specifications include a guaranteed 16-bit resolution with no missing codes, ±0.5 LSB maximum integral nonlinearity (INL), and a typical signal-to-noise ratio (SNR) of 93.8dB at a 1MHz input frequency. It incorporates an internal 2.048V reference with a buffer capable of delivering up to 4.096V.

Feature Summary

• 16-bit resolution with 5Msps sampling rate and no pipeline latency
• Serial LVDS interface with configurable one-lane or two-lane output modes
• Internal 2.048V reference with integrated buffer providing 4.096V output
• Guaranteed 16-bit performance with no missing codes and ±0.5 LSB max INL

Applications

• High-speed data acquisition systems
• Imaging applications requiring wide dynamic range
• Communications systems with significant signal bandwidth
• Control loops requiring no-latency operation
• Instrumentation and automatic test equipment (ATE)

Procurement Notes

Verify the specific temperature grade suffix when ordering; the 'I' designation indicates an operating range of –40°C to 85°C. Confirm package availability as the component is supplied in a 32-lead QFN format. Ensure supply voltages match the specified 5V analog and 2.5V digital requirements during procurement planning.

Selection Notes

Select this component for applications demanding high speed combined with precision linearity. The internal reference simplifies design but requires verification if external higher-accuracy references are needed. Consider the LVDS interface complexity versus standard CMOS interfaces based on board layout constraints and noise immunity requirements.

Part Context

This part belongs to the LTC2385 family of SAR ADCs. The IUH-16 variant specifically denotes the industrial temperature grade (-40°C to 85°C) and the 16-bit resolution version within the 5Msps series. It shares the same physical footprint and pinout with other resolution variants in the family, facilitating potential design upgrades.

Replacement Considerations

Direct replacements within the same family include the LTC2385CUH-16#PBF for commercial temperature ranges (0°C to 70°C). Higher resolution options like the LTC2386-18 or lower speed variants may serve as functional substitutes if timing and accuracy requirements allow.