LTC2387IUH-18#TRPBF

Overview

The LTC2387IUH-18#TRPBF is an 18-bit, 15Msps successive approximation register (SAR) analog-to-digital converter manufactured by Analog Devices Inc. It operates from 5V and 2.5V supplies with a differential input range of ±4.096V. Key electrical specifications include a typical SNR of 95.7dB at 1MHz input frequency, a maximum integral nonlinearity (INL) of ±3LSB, and a power dissipation of 125mW at full throughput. The device features a serial LVDS digital interface and is housed in a 32-lead 5mm × 5mm QFN package.

Feature Summary

• 18-bit resolution with guaranteed no missing codes
• 15Msps throughput rate with zero pipeline latency
• Serial LVDS digital interface supporting one-lane or two-lane modes
• Internal 2.048V reference with ±20ppm/°C temperature coefficient

Applications

• High speed data acquisition
• Imaging systems
• Communications requiring wide dynamic range
• Control loops
• Instrumentation

Procurement Notes

Verify the #TRPBF suffix indicates tape and reel packaging containing 2500 units. Confirm the 'I' grade designation corresponds to the –40°C to 85°C operating temperature range. Ensure the QFN-32 package dimensions match the PCB footprint requirements for the 5mm × 5mm plastic body.

Selection Notes

Select this component when high linearity and low noise are required at sampling rates up to 15Msps. The internal reference buffer simplifies design if external references are not needed. Consider the LVDS interface complexity versus single-ended alternatives if minimizing data lines is critical. Verify that the 125mW power dissipation fits within the thermal constraints of the application.

Part Context

This part belongs to the LTC2387 family, which includes 16-bit and 18-bit variants. The IUH-18 suffix specifically denotes the industrial temperature grade (-40°C to 85°C), QFN-32 package, and 18-bit resolution. The TRPBF suffix indicates RoHS-compliant tape and reel packaging.

Replacement Considerations

The LTC2387CUH-18#TRPBF is a compatible alternative with identical electrical specifications but a commercial temperature range (0°C to 70°C). Other members of the LTC2387 family offer different resolutions or sampling rates but share similar pinouts and interfaces.