MAX3518 DOCSIS 3.0上行放大器

MAX3518 DOCSIS 3.0上行放大器

The MAX3518 is an integrated CATV upstream amplifier IC designed to meet the DOCSIS 3.0 requirements, while dissipating only 1.25W. The amplifier covers a 5MHz to 85MHz input frequency range (275MHz, 3dB bandwidth), and is capable of transmitting four QPSK modulated carriers, each at +58dBmV, simultaneously within this range. Both input and output ports are differential, requiring than an external balun be used at the output port. The gain is controlled in 1dB steps over a 63dB range using a SPI™ 3-wire interface.

The MAX3518 operates from a single +5V supply. Four power codes are provided to allow maximum supply current to be reduced as determined by distortion requirements. In addition, for each power code, supply current is automatically reduced as gain is reduced while maintaining distortion performance. For DOCSIS 3.0 applications, the MAX3518 draws 300mA at 33dB gain, dropping to 250mA at 31dB gain. The MAX3518 supply current drops to 5mA between bursts to minimize power dissipation in transmit-disable mode. Control logic levels are 3.3V CMOS.

The MAX3518 is available in a 20-pin thin QFN package, and operates over the extended industrial temperature range (-40°C to
+85°C).

	+5V Supply Voltage
	Low Power: 1.25W at 31dB Gain, 64dBmV Output
	Ultra-Low 25mW Dissipation in Transmit-Disable Mode
	63dB Gain Control Range in 1dB Steps
	-60dBc Harmonic Distortion at 64dBmV Output
	Small 5mm x 5mm Thin QFN Package
	Low Burst On/Off Transient
	275MHz, 3dB Bandwidth

DOCSIS 3.0电缆调制解调器
机顶盒
VOIP调制解调器

上行放大器DOCSISintegratedupstream

免责声明：本网信息来自于互联网，目的在于传递更多信息，并不代表本网赞同其观点。其原创性以及文中陈述文字和内容未经本站证实，对本文以及其中全部或者部分内容、文字的真实性、完整性、及时性本站不作任何保证或承诺，并请自行核实相关内容。本站不承担此类作品侵权行为的直接责任及连带责任。如若本网有任何内容侵犯您的权益，请及时联系我们，本站将会在24小时内处理完毕。