MAX40659ETA+

Overview

The MAX40659ETA+ is a high-speed transimpedance amplifier designed for optical distance measurement receivers in LiDAR applications. It features an internal 100mA input current clamp and a fixed small-signal transimpedance of 36.6kΩ. The device operates from a +3.3V supply, consuming approximately 24mA to 36mA depending on conditions. It provides a minimum bandwidth of 360MHz and exhibits 45nARMS input-referred noise. The component includes an offset adjustment input for bias control and is housed in an 8-pin TDFN package.

Feature Summary

• Internal 100mA input current clamp protects the amplifier during overload events
• Integrated offset adjustment input allows precise control of effective input offset current
• Optimized for low-noise performance with 45nARMS input-referred noise density
• Fast recovery from overload combined with high gain suitable for precision distance measurement

Applications

• Optical Distance Measurement
• LiDAR Receivers
• Industrial Safety Systems
• Autonomous Driving Systems

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and temperature range. Ensure compatibility with the required 8-TDFN footprint and thermal pad grounding requirements. Confirm RoHS compliance status through manufacturer datasheets before procurement.

Selection Notes

Select this component when a fixed 36.6kΩ transimpedance value is required for LiDAR signal processing. Consider the 100mA internal clamp capability for handling high transient currents without external protection diodes. Evaluate the 360MHz minimum bandwidth against system frequency requirements.

Part Context

This part belongs to the MAX40658/MAX40659 family of transimpedance amplifiers manufactured by Analog Devices / Maxim Integrated. The MAX40659 variant specifically offers double the transimpedance gain compared to the MAX40658 model while sharing identical pinouts and general electrical characteristics.

Replacement Considerations

The MAX40658ETA+ is a pin-compatible alternative within the same series offering 18.3kΩ transimpedance instead of 36.6kΩ.