ALM-31222-TR2G

RF Amplifiers Overview

The ALM-31222-TR2G is a silicon-based RF power amplifier from the Meranti series, designed for operation within the 1.7 GHz to 2.7 GHz frequency range. It delivers an output power of 1W (30dBm) with a typical gain of 14.9 dB and a noise figure of 2.7 dB at 2 GHz. The device operates on a 5V supply with a current consumption of 750 mA. Key performance metrics include a P1dB of 31.5 dBm, an OIP3 of 47.9 dBm, and an input return loss of 10 dB. It features high isolation of 30 dB and supports a maximum operating temperature of +150°C. The component is housed in a 22-MCOB (5x6 mm) surface-mount package.

RF Amplifiers Feature Summary

• Integrated 1W power amplifier optimized for wideband wireless applications
• High linearity performance with superior third-order intercept point
• Robust thermal capability supporting high junction temperatures
• Compact surface-mount packaging for efficient board space utilization

RF Amplifiers Applications

• GSM base station infrastructure
• PCS network equipment
• W-CDMA transmission systems
• WiMAX broadband access units

RF Amplifiers Procurement Notes

This component is officially classified as obsolete by Broadcom Limited. Procurement must rely exclusively on secondary market distributors or surplus inventory channels. Verify part authenticity through serial code validation and datasheet cross-referencing. Ensure handling procedures comply with moisture sensitivity level requirements during storage and assembly to prevent package damage.

RF Amplifiers Selection Notes

Engineers should evaluate this amplifier for legacy system maintenance or specific wideband coverage needs between 1.7 GHz and 2.7 GHz. Consider the high supply current requirement of 750 mA when designing power management circuits. The 22-MCOB footprint necessitates specific PCB land pattern design. Due to obsolescence, alternative modern solutions with similar gain and power profiles should be assessed for new designs.

RF Amplifiers Part Context

The ALM-31222-TR2G belongs to Broadcom's Meranti family of RF amplifiers, targeting multi-standard wireless infrastructure. It complements lower-power variants like the MSA-0611 by providing higher output capabilities. The device utilizes silicon technology, distinguishing it from GaAs alternatives in terms of thermal handling and cost structure for base station applications.

RF Amplifiers Replacement Considerations

No direct public substitute part numbers are confirmed for this obsolete component. Designers should consult Broadcom application notes for modern replacements or evaluate generic 1W Si LDMOS amplifiers with compatible 22-MCOB footprints.

RF Amplifiers FAQ

What is the maximum operating temperature for the ALM-31222-TR2G?

The device supports a maximum operating temperature of +150°C.

Does the ALM-31222-TR2G support WiMAX applications?

Yes, the component is documented as suitable for WiMAX, GSM, PCS, and W-CDMA applications.