ADA-4743-TR2G

RF Amplifiers Overview

The ADA-4743-TR2G is a silicon-based RF amplifier manufactured by Broadcom Limited, designed for wideband applications. It operates within a frequency range of 0 Hz to 2.5 GHz and provides a typical gain of 16.5 dB. The device requires an operating supply current of 80 mA and features a noise figure of 4.2 dB. Packaged in a lead-free plastic SOT-343 (SC-70) surface-mount configuration with four pins, it supports supply voltages starting at 3.3 V. This component is classified as obsolete and is no longer in active production.

RF Amplifiers Feature Summary

• Wideband operation covering DC to 2.5 GHz
• High gain performance suitable for signal amplification
• Low power consumption design
• Compact surface-mount packaging

RF Amplifiers Applications

• ISM band applications
• PCS band systems
• WLL frequency bands
• WiMax (802.16) standards support

RF Amplifiers Procurement Notes

This component is officially designated as obsolete and is no longer manufactured by Broadcom Limited. Procurement must rely on remaining stock from authorized distributors or secondary market suppliers. Verify the authenticity of available units through official obsolescence notifications and datasheets. Ensure that any sourced inventory matches the specific TR2G suffix requirements for pinout and electrical characteristics. Cross-reference with similar active components if long-term supply stability is required.

RF Amplifiers Selection Notes

Select this part only for legacy designs requiring DC to 2.5 GHz amplification with specific gain profiles. Consider the obsolete status when planning for future production runs. Evaluate alternative active RF amplifiers from the manufacturer's current portfolio that offer comparable frequency ranges and package types. Ensure compatibility with existing PCB layouts due to the SOT-343 form factor. Review updated datasheets for any changes in recommended operating conditions compared to earlier revisions.

RF Amplifiers Part Context

The ADA-4743 series represents Broadcom's wideband low-power RF amplifier lineup. The TR2G variant specifically denotes the tape-and-reel packaging format within the SOT-343 footprint. This series targets wireless communication infrastructure and mobile devices. The transition to lead-free and RoHS-compliant manufacturing aligns with environmental standards. The device integrates bipolar technology for stable performance across the specified bandwidth.

RF Amplifiers Replacement Considerations

Public confirmed substitute part numbers are not explicitly listed in the provided documentation. Users should consult Broadcom's official obsolescence notices for recommended alternatives. Similar active RF amplifiers in the SOT-343 package may serve as functional replacements if electrical parameters match.