MAX3657ETC+T

Overview

The MAX3657ETC+T is a low-noise transimpedance amplifier designed for optical receivers operating up to 155Mbps. It features a typical small-signal bandwidth of 130MHz and an input-referred noise current of 14nARMS at 117MHz. The device provides a transimpedance gain of 54kΩ with a linear range supporting up to 2µAP-P input current. Operating from a single +3.3V supply, it consumes approximately 76mW of power. The component includes an integrated filter resistor and an average photocurrent monitor.

Feature Summary

• Integrated DC-cancellation circuit that minimizes pulse-width distortion without requiring external compensation capacitors
• Built-in photocurrent monitor providing a current output proportional to the average input signal
• Internal filter resistor combined with external capacitance to reduce photodiode cathode noise
• Differential CML output structure with internal back termination for driving standard loads

Applications

• Optical receivers operating at data rates up to 155Mbps
• Class-B and Class-C Passive Optical Networks (PONs)
• SFP and SFF optical transceivers
• BiDi (Bidirectional) transceiver modules

Procurement Notes

Verify the specific suffix 'ETC' corresponds to the 12-pin Thin QFN package with an operating temperature range of -40°C to +85°C. Confirm the datasheet revision matches the required electrical characteristics. Ensure compatibility with the intended photodiode capacitance, as performance is optimized for inputs near 0.5pF. Check for availability constraints associated with this specific package variant.

Selection Notes

Select this component when designing receivers for 155Mbps fiber-optic applications requiring low jitter and high sensitivity. It is suitable for environments where Class-B or Class-C PON specifications must be met. Consider the 130MHz bandwidth and 14nARMS noise figure for optimal signal resolution. Evaluate the need for the integrated photocurrent monitor for system diagnostics and bias control.

Part Context

This device belongs to the Maxim Integrated MAX3657 family of transimpedance amplifiers. The family includes die variants such as MAX3657E/D and MAX3657BE/D, which offer reversed output polarities. These components are engineered for high-gain, low-power dissipation in compact form factors, facilitating integration into various optical communication modules.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.