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Linear - Amplifiers - Special Purpose

The MAX3747AEUB+ is a high-performance, low-power single-ended amplifier that delivers the best-in-class low noise, low distortion, and wide operating temperature range for a wide range of applications, including digital television broadcasts, high-end mobile communications, and automotive infotainment applications. The amplifier is ideal for portable applications where power efficiency and low noise performance are required in a limited space.

The MAX3747AEUB+ has excellent noise performance, linearity, and phase noise over a wide operating temperature range. It delivers excellent performance, with a noise figure of 0.6 dB and total harmonic distortion of -114 dB. The device is powered internally and requires only a single supply, simplifying overall system design and integration. The MAX3747AEUB+ is available in a space-saving 6-mm x 6-mm lead frame surface-mount package.

Application Field

The MAX3747AEUB+ is suitable for use in a number of high-performance applications. It is particularly well suited for a variety of portable, low-power communications applications, including:

• Digital television and radio broadcast
• Mobile handsets and other hand-held devices
• Wireless LAN and data services
• Automotive infotainment systems
• Portable medical electronics

The MAX3747AEUB+ is engineered to reduce power consumption and system noise in any of these applications. It offers high-performance linearity, low distortion, and low-noise performance, which helps to extend battery life and simplify final testing and calibration.

Working Principle

The MAX3747AEUB+ utilizes an internally matched input network that enables excellent performance over a wide input dynamic range. The amplifier has low noise and high linearity performance over a wide frequency range, with a flat frequency response. The input network consists of two high-speed amplifiers, each driven by a separate current-holding input buffer.

The amplifier also incorporates a high-speed bipolar output stage with an independent output buffer, providing an output voltages from 0.5 V to 4 V. The device allows for high dynamic range through its wide voltage gain range. It also has excellent temperature stability and can be compensated for changes in the temperature for more consistent performance.

The MAX3747AEUB+ features a high-speed Class-D output stage, providing a low noise output with a low THD of 1%. The amplifier also features an integrated digital-to-analog converter, allowing for digital control of the gain, frequency response and bandwidth of the device.

Conclusion

The MAX3747AEUB+ is a high-performance, low-power single-ended amplifier that delivers the best-in-class low noise, low distortion, and wide operating temperature range for a wide range of applications. It is suitable for use in a number of high-performance applications, including digital television and radio broadcast, mobile handsets, wireless LAN, and automotive infotainment systems. The amplifier is engineered to reduce power consumption and system noise and has excellent noise performance, linearity, and phase noise over a wide operating temperature range.

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