LTC2385IUH-18#PBF

Overview

The LTC2385IUH-18#PBF is an 18-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 fully differential ±4.096V input range. Key electrical specifications include a typical SNR of 95.7dB at 1MHz input frequency, a maximum INL of ±1.5 LSB, and power dissipation of 78mW at full throughput. The device features a serial LVDS interface supporting one-lane or two-lane output modes, an internal 2.048V reference, and no pipeline latency.

Feature Summary

• 18-bit resolution with guaranteed no missing codes and ±1.5 LSB maximum INL
• 5Msps sampling rate with zero pipeline delay for high-speed control loops
• Serial LVDS digital interface with configurable one-lane or two-lane output modes
• Internal 2.048V reference with ±20ppm/°C temperature coefficient

Applications

• High speed data acquisition systems
• Imaging applications requiring wide dynamic range
• Communications systems with significant signal bandwidth
• Control loop applications needing no-latency operation
• Instrumentation and ATE equipment

Procurement Notes

Verify the ordering suffix #PBF indicates lead-free finish and tube packaging. Confirm the 'I' grade designation corresponds to the –40°C to 85°C operating temperature range. Ensure compatibility with the 32-lead QFN package dimensions during procurement planning.

Selection Notes

Select this component when 18-bit linearity and 5Msps throughput are required without pipeline latency. The internal reference and buffer simplify design if external precision references are not needed. Consider the LVDS interface requirements for clock distribution and data routing in high-speed PCB layouts.

Part Context

This part belongs to the LTC2385-18 family of SAR ADCs. The 'I' suffix denotes the industrial temperature range variant, while 'UH' specifies the 32-lead 5mm x 5mm QFN package. It is distinct from lower-speed or multi-channel variants within the broader ADC portfolio.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify pinout and electrical parameter compatibility before considering any alternative devices.