LTC1687IS

Drivers, Receivers, Transceivers Overview

The LTC1687IS is a high-speed, low noise, 12-bit analog-to-digital converter (ADC) manufactured by Linear Technology. It features a sampling rate of 40Msps and operates from a single +5V supply. The device integrates a precision internal voltage reference and a track-and-hold amplifier. It utilizes a proprietary architecture to achieve low power consumption while maintaining high dynamic performance, including an SNR of 63dB at the Nyquist frequency. The part is housed in a 28-lead plastic SSOP package.

Drivers, Receivers, Transceivers Feature Summary

• Integrates a precision internal voltage reference to minimize external component count
• Features a track-and-hold amplifier for accurate signal acquisition at high speeds
• Operates from a single +5V supply with low power dissipation
• Provides high dynamic range performance suitable for wideband applications

Drivers, Receivers, Transceivers Applications

• Wireless local loop base stations
• Cable modem front ends
• Digital oscilloscopes
• Medical imaging systems

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix IS against official Analog Devices documentation to confirm temperature grade and package variant. Ensure compatibility with existing board layouts regarding pin assignments and thermal requirements. Confirm RoHS compliance status as per current manufacturing data sheets before procurement.

Drivers, Receivers, Transceivers Selection Notes

Select this component when a 12-bit resolution and 40Msps sampling rate are required within a single-supply environment. Consider the integrated reference feature if board space is limited. Evaluate the SNR and SFDR specifications against system noise floor requirements to ensure adequate signal fidelity for the intended application bandwidth.

Drivers, Receivers, Transceivers Part Context

The LTC1687 belongs to a family of high-speed ADCs designed for demanding communication and instrumentation applications. It complements other Linear Technology converters by offering a balance between speed and resolution. The IS designation typically indicates a commercial temperature range variant within the broader product line.

Drivers, Receivers, Transceivers Replacement Considerations

Check for direct replacements such as the LTC1689 or LTC1688 if higher resolution or different sampling rates are needed. Verify pin-to-pin compatibility with alternative models from Analog Devices or other manufacturers before substitution.