M02045G-2Y03-T

Overview

The M02045G-2Y03-T is a high-gain limiting post-amplifier and quantizer designed for fiber optic communication applications up to 200 Mbps. It operates with a 3.3 V or 5 V supply, drawing a typical current of 12.5 mA at 3.3 V. The device features a typical input sensitivity of 1.6 mVpp differential and provides PECL-compatible logic outputs. It includes a programmable signal-level detector with approximately 2 dB optical hysteresis to prevent output chatter. The component is housed in a QSOP16 package and supports an operating temperature range from -40 °C to +85 °C.

Feature Summary

• Integrated high-gain limiting amplifier providing necessary gain for PECL compatible logic outputs following photodetector stages.
• Programmable signal-level detector allows user-defined thresholds for enabling logic outputs with built-in hysteresis.
• JAM function disables data outputs when no valid input signal is present, preventing noise-induced toggling.
• Internal DC offset compensation circuitry removes effects of transimpedance amplifier output offsets.

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 QSOP16 package designation matches the required footprint. Ensure the operating temperature range of -40 °C to +85 °C aligns with system environmental requirements. Cross-reference the Mindspeed prefix with MACOM Technology Solutions branding if applicable to the specific supply chain context.

Selection Notes

Select this component for fiber optic receiver chains requiring high sensitivity and low power consumption. The 1.6 mV typical input sensitivity makes it suitable for low-light applications. The integrated signal detect and JAM functions simplify design by reducing external components needed for loss-of-signal detection. Ensure AC-coupling capacitors are sized correctly to maintain low-frequency cutoff below 100 kHz for jitter minimization.

Part Context

This device belongs to the MC2045 series of post-amplifiers manufactured by Mindspeed Technologies. The M02045G-2Y03-T specifically denotes the RoHS-compliant version packaged in a 16-lead Quad Small Outline Package (QSOP). The series is engineered for high-speed digital fiber optic links, serving as the final amplification stage before logic interfacing.

Replacement Considerations

M02045-2Y03-T is the non-RoHS compliant equivalent within the same package family.

FAQ

How is the JAM function implemented?

The JAM function is enabled by externally connecting the ST (signal detect) output pin to the JAM input pin. This 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 connect an external capacitor that acts with internal feedback resistors to form a DC auto-zero circuit. This compensates for DC offsets from the preceding transimpedance amplifier.

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.