ADA-4543-TR2G

RF Amplifiers Overview

The ADA-4543-TR2G is a silicon general-purpose RF amplifier manufactured by Broadcom Limited. It operates across a frequency range of 0 Hz to 2.5 GHz with a typical gain of 15.1 dB and a noise figure of 3.7 dB at 900 MHz. The device requires a supply voltage between 3.1 V and 3.8 V, drawing 10 mA to 30 mA of current. Key performance metrics include an output IP3 of 15 dBm and a P1dB of 1.9 dBm. Power dissipation is rated at 145 mW. It is housed in a SOT-343 (SC-70) surface-mount package.

RF Amplifiers Feature Summary

• Designed for broadband operation from DC to 2.5 GHz
• Utilizes silicon bipolar technology for general-purpose amplification
• Optimized for low-noise signal processing in wireless applications

RF Amplifiers Applications

• PCS (Personal Communications Service)
• WLL (Wireless Local Loop)
• 802.16/WiMax systems
• ISM band applications

RF Amplifiers Procurement Notes

This component is officially listed as obsolete by the manufacturer. Availability is restricted, and distributors may not stock this item in all regions. Verify end-of-life status and check for official product change notifications before design-in. Sourcing should focus on finding verified surplus or alternative replacement components due to discontinuation.

RF Amplifiers Selection Notes

Select this part only if the specific 0 Hz to 2.5 GHz bandwidth and 15.1 dB gain profile match the system requirements. Consider the 3.7 dB noise figure for sensitivity needs. Due to its obsolete status, evaluate long-term supply chain risks. Compare against newer silicon RF amplifiers that offer similar form factors but improved availability and potentially better linearity metrics.

RF Amplifiers Part Context

The ADA-4543 belongs to a series of high-frequency RF amplifiers intended for mobile and wireless broadband networks. It serves as a building block for signal conditioning in consumer electronics and communication infrastructure. The TR2G suffix indicates a specific tape-and-reel packaging configuration for automated assembly processes.

RF Amplifiers Replacement Considerations

Public documentation lists BGA420H6327XTSA1 from Infineon Technologies as a similar substitute part number.