BUY SA5223D https://www.utsource.net/itm/p/762186.html
Wide dynamic range AGC transimpedance amplifier 150MHz
Description: The SA5223D is a monolithic integrated circuit designed for use in the protection of telephone lines. Features: Low on-state resistance Low power consumption Low leakage current Low clamping voltage Low capacitance High surge capability Low thermal resistance Low EMI/RFI noise Applications: The SA5223D is suitable for use in telephone line protection applications, including telephone sets, modems, and other communication equipment. (For reference only)