NXP Semiconductors MHW1244N

Overview

MHW1244N from Freescale Semiconductor is a 5–200 MHz CATV reverse path amplifier module using silicon bipolar transistor technology, delivering 24.0 ± 0.5 dB gain at 10 MHz, ≥18 dB input/output return loss, and −61 dBc typical cross modulation distortion under 26-channel loading. It operates from a 24 Vdc supply and is specified for high-split 2-way cable TV systems.

For engineers reviewing the MHW1244N datasheet, MHW1244N pinout, MHW1244N application, or MHW1244N equivalent, key selection criteria include its guaranteed 5–200 MHz bandwidth, ±0.2 dB gain flatness, RoHS-compliant Case 1302-01 package, and verified performance in mid/high-split return-path amplification with stable DC current (210–240 mA) across −20°C to +100°C case temperature.

Technical Context

The MHW1244N is a unconditionally stable broadband RF amplifier designed specifically for CATV return-path signal conditioning in 5–200 MHz spectrum. Its architecture delivers consistent gain flatness (±0.2 dB), low noise figure (≤5.0 dB), and distortion-limited linearity (XMD26 = −61 dBc typ, CTB26 = −67.5 dBc typ) under multi-channel FLAT loading.

It replaces MHW1244 with identical form, fit, and function, maintaining compatibility with legacy 2-way cable infrastructure. The device uses silicon bipolar process technology and requires no external biasing components-DC current is internally regulated and thermally stabilized over full operating temperature range.

Key Specifications

Pinout & Package

Package: Case 1302-01, Style 1 - hermetically sealed metal-ceramic module with integrated RF matching, optimized for 75 Ω CATV return-path impedance and thermal dissipation up to +100°C case temperature.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar CATV reverse-path amplifier applications.

Compared with MHW1244 (legacy) and MAX2109 (lower-bandwidth alternative), the MHW1244N uniquely combines 200 MHz bandwidth, 24 dB gain, −61 dBc 26-channel distortion, and unconditional stability in a RoHS-compliant metal-ceramic package-making it the sole qualified solution for high-split DOCSIS 3.1 upstream amplification.

Availability

MHW1244N is available at Aetrix Electronics and suitable for CATV headend upgrades, fiber-deep node deployments, and DOCSIS 3.1 upstream infrastructure requiring stable component supply, long-lifecycle support, and guaranteed RoHS compliance.

Supply support for MHW1244N includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Freescale Semiconductor was a leading designer of RF, analog, and mixed-signal semiconductors for automotive, industrial, and communications markets before its acquisition by NXP in 2015.

The MHW1244N belongs to Freescale's CATV RF amplifier product line, engineered specifically for broadband return-path signal integrity in cable infrastructure-emphasizing distortion control, thermal stability, and 75 Ω system integration.

FAQ

What is the operating frequency range of the MHW1244N?

The MHW1244N operates across 5.0–200 MHz with fully tested and guaranteed response and return loss performance. This range supports low-, mid-, and high-split CATV return-path architectures, including DOCSIS 3.1 upstream extensions. The MHW1244N maintains ≥18 dB input/output return loss and ±0.2 dB gain flatness throughout this band, enabling reliable deployment in modern broadband networks.

Is the MHW1244N pin-compatible with its predecessor MHW1244?

Yes-the MHW1244N is a direct replacement for MHW1244 with no form, fit, or function changes. Both share identical Case 1302-01 packaging, pinout (Pins 1, 2, 3, 5, 7, 8, 9), electrical specifications, and thermal behavior. The MHW1244N adds RoHS compliance while retaining full backward compatibility, making it suitable for drop-in upgrades in existing infrastructure.

What distortion performance does the MHW1244N deliver under 26-channel loading?

Under 26-channel FLAT loading (5–200 MHz), the MHW1244N delivers −61 dBc typical cross modulation distortion (XMD26) and −67.5 dBc typical composite triple beat (CTB26). These values are measured at +50 dBmV per channel and meet DOCSIS 3.1 upstream linearity requirements for high-split systems. The MHW1244N achieves this with unconditional stability and no external compensation.

Does the MHW1244N require external biasing or matching components?

No-the MHW1244N integrates internal biasing, RF matching, and thermal regulation. It operates directly from a 24 Vdc supply (with +28 Vdc absolute maximum rating) and presents 75 Ω matched RF input and output ports. No external DC blocking, bias tees, or impedance-matching networks are required, simplifying PCB layout and reducing bill-of-materials cost in CATV node designs.

What is the thermal operating range and DC current draw of the MHW1244N?

The MHW1244N operates with case temperature from −20°C to +100°C and draws 210 mA typical / 240 mA maximum DC current. Its silicon bipolar design provides stable gain and distortion performance across this full range, eliminating gain drift in outdoor cabinets or unconditioned plant environments. The MHW1244N's thermal robustness is validated per Freescale's specification tables and supports long-term reliability in demanding CATV infrastructure.