MAX3522BCTN+

Overview

The MAX3522BCTN+ is a dual-output programmable gain amplifier (PGA) designed for DOCSIS 3.1 upstream applications. It operates within a 5MHz to 204MHz RF bandwidth and delivers +68dBmV combined output power at either output without requiring external RF switches. The device features a 54dB gain range adjustable in 1dB steps via a 3-wire SPI interface. It utilizes high-voltage CMOS technology to provide high dynamic range while minimizing power consumption under a +5V supply.

Feature Summary

• Dual-output architecture eliminates the need for external RF switches when selecting between different upstream bandwidths.
• Programmable gain control allows adjustment across a 54dB range with 1dB resolution through a serial peripheral interface.
• Compliant with DOCSIS 3.1 spurious emission limits for upstream transmission requirements.

Applications

• Cable Modem (CM) systems
• Customer Premises Equipment (CPE)
• DOCSIS 3.1 Upstream (D3.1 US) amplification

Procurement Notes

Verify the specific suffix against official Analog Devices documentation, as package or temperature variations may exist. Confirm current availability status directly with authorized distributors, as supply constraints may apply. Ensure the component meets RoHS compliance requirements for your target market before finalizing procurement orders.

Selection Notes

Select this component for designs requiring integrated dual-path amplification to reduce bill of materials complexity. The built-in gain adjustability simplifies calibration processes compared to fixed-gain alternatives. Verify that the system power budget accommodates the +5V requirement and that the SPI interface is supported by the host controller.

Part Context

This part belongs to the Maxim Integrated portfolio, now part of Analog Devices Inc. It is specifically engineered for cable broadband infrastructure, addressing the stringent linearity and power output demands of modern DOCSIS 3.1 upstream channels. The TQFN-56 package facilitates compact PCB layout for dense consumer electronics.

Replacement Considerations

Consult official cross-reference data for verified substitutes. Generic replacements may not match the specific dual-output configuration or DOCSIS 3.1 compliance metrics required for upstream signal integrity.