M02045G-2Y01-T

Overview

The M02045G-2Y01-T is a high-gain limiting post-amplifier and quantizer designed for fiber optic communication applications up to 200 Mbps. It operates on a single 3.3 V or 5 V supply with a typical current consumption of 12.5 mA at 3.3 V. The device provides PECL-compatible differential data outputs and includes a programmable signal-level detector with approximately 2 dB optical hysteresis to prevent output chatter. It features an external JAM function to disable outputs when no valid signal is detected.

Feature Summary

• Integrated high-gain limiting amplifier providing necessary gain for PECL compatible logic outputs following photodetectors and transimpedance amplifiers.
• Programmable input-signal level detector allows users to set thresholds for enabling logic outputs, featuring inherent hysteresis to prevent noise-induced toggling.
• External JAM function capability disables data outputs when no valid signal is present, ensuring stable states during loss of signal conditions.

Applications

• SDH/SONET 155 Mbps Transceivers
• Fast Ethernet Receivers
• FDDI 125 Mbps Receivers
• ESCON Receivers
• FTTx and Media Converters

Procurement Notes

Verify the RoHS-compliant status indicated by the 'G' suffix in the part number against current manufacturing standards. Confirm the TSSOP20 package type matches the design requirements. Ensure compatibility with the original Mindspeed Technologies specifications now managed under MACOM Technology Solutions. Review absolute maximum ratings for power supply and temperature ranges before integration.

Selection Notes

Select this component for applications requiring a limiting amplifier with integrated signal detection and PECL outputs. It is suitable for systems operating at data rates up to 200 Mbps. Consider the 1.6 mV typical input sensitivity and the need for AC-coupled inputs. Evaluate the requirement for the JAM squelch function and the availability of the TSSOP20 package for PCB layout constraints.

Part Context

This device belongs to the MC2045 series of post-amplifiers originally manufactured by Mindspeed Technologies. The M02045G-2Y01-T specifically denotes the RoHS-compliant version housed in a TSSOP20 package. The series is engineered for fiber optic receiver stages, bridging the gap between analog transimpedance amplification and digital logic interfacing.

Replacement Considerations

M02045-2Y01-T (Non-RoHS version)

FAQ

How is the JAM function implemented?

The JAM function is implemented by externally connecting the ST (signal detect) output pin to the JAM input pin. This configuration forces the data outputs to a fixed state when the input signal falls below the programmed threshold.

What is the purpose of the CAZ pins?

The CAZ+ and CAZ- pins are used for DC offset compensation. An external capacitor connected between these pins acts with internal feedback resistors to remove DC offsets from the TIA output and the amplifier itself, functioning as a DC auto-zero circuit.

Can the device operate with both 3.3 V and 5 V supplies?

Yes, the device operates with a single supply voltage ranging from 3.0 V to 5.5 V. Typical specifications are provided for both 3.3 V and 5.0 V operation, allowing flexibility in system power design.