MAX3658AETA-T

Overview

The MAX3658AETA-T is a transimpedance preamplifier designed for optical receivers operating at data rates up to 622Mbps. It features low noise, high gain, and low power dissipation, making it suitable for fiber access and small form-factor transceivers. Key electrical parameters include an input-referred noise of 45nARMS, a transimpedance gain of 18.3kΩ, and a bandwidth of 580MHz. The device supports a 2mA p-p input overload capability with a typical sensitivity of -33dBm. It operates on a single +3.3V supply with a power dissipation of 66mW. The component includes an average photocurrent monitor and is housed in an 8-TDFN (3x3) package.

Feature Summary

• Integrated filter resistor provides positive bias for photodiodes
• Built-in average photocurrent monitor for system diagnostics
• Low noise and high gain architecture optimized for optical reception
• Compact die size facilitates assembly into TO-46 optical heads

Applications

• Optical receivers operating up to 622Mbps
• Passive Optical Networks (PON)
• Small Form-Factor Pluggable (SFF/SFP) transceivers
• FTTx transceiver modules

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging configuration when sourcing. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor certificates. Ensure the 8-TDFN footprint matches the target PCB design constraints. Cross-reference the datasheet revision to confirm pinout compatibility with existing designs.

Selection Notes

Select this component for applications requiring high-speed optical signal processing with strict power constraints. The 18.3kΩ transimpedance gain and 580MHz bandwidth support 622Mbps data rates effectively. Consider the integrated photocurrent monitor if system health monitoring is required. The 3.3V single-supply operation simplifies power management in portable or dense optical modules.

Part Context

The MAX3658 series belongs to Maxim Integrated's portfolio of specialized amplifiers for optical networking. This family addresses the needs of fiber access networks and compact transceiver modules. The AETA variant specifically denotes the surface-mount TDFN package option, distinguishing it from bare-die versions like the MAX3658AE/D. It complements other high-speed optical interface solutions within the same product line.

Replacement Considerations

Publicly confirmed substitute part numbers include MAX3658AETA+T and MAX3658AETA-T. Verify functional equivalence regarding pinout and electrical specifications before substitution.