MAX3509 CATV上行放大器(含应用电路和参数资料)
max3509 catv上行放大器(含应用电路和参数资料)
max3509概述
the max3509 is a programmable power amplifier for use in catv upstream applications. the device outputs up to 66dbmv qpsk through a 1:1 transformer. it features variable gain controlled by a 3-wire digital serial bus. gain control is available in 1db steps. the device operates over a 5mhz to 65mhz frequency range.
the max3509 offers a transmit-disable mode, which places the device in a high-isolation state for use between bursts in tdma systems. in this mode, all analog functions are shut down, minimizing output noise and power consumption. when entering and leaving transmit-disable mode, transients are kept to 25mv nominal at full gain. in addition, supply current is reduced to 7.8ma.
an additional power-down mode is available. shutdown mode disables all circuitry and reduces current consumption to less than 1µa.
the max3509 is available in a 20-pin tssop-ep package for the extended-industrial temperature range(-40°c to +85°c). max3509关键特性
ultra-low power-up/down transients, 25mv (typ) at 66dbmv output single-supply operation output level ranges from <12dbmv to 67dbmv (qpsk) gain programmable in 1db steps low transmit output noise floor: -41dbmv (160khz bw) low transmit-disable output noise: -70dbmv shutdown mode
max3509应用/使用
电缆调制解调器
catv基础结构
catv状态监视
opencatv机顶盒
线缆电话
max3509应用电路
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MAX3509 CATV上行放大器(含应用电路和参数资料)
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max3509概述
the max3509 is a programmable power amplifier for use in catv upstream applications. the device outputs up to 66dbmv qpsk through a 1:1 transformer. it features variable gain controlled by a 3-wire digital serial bus. gain control is available in 1db steps. the device operates over a 5mhz to 65mhz frequency range.
the max3509 offers a transmit-disable mode, which places the device in a high-isolation state for use between bursts in tdma systems. in this mode, all analog functions are shut down, minimizing output noise and power consumption. when entering and leaving transmit-disable mode, transients are kept to 25mv nominal at full gain. in addition, supply current is reduced to 7.8ma.
an additional power-down mode is available. shutdown mode disables all circuitry and reduces current consumption to less than 1µa.
the max3509 is available in a 20-pin tssop-ep package for the extended-industrial temperature range(-40°c to +85°c). max3509关键特性
ultra-low power-up/down transients, 25mv (typ) at 66dbmv output single-supply operation output level ranges from <12dbmv to 67dbmv (qpsk) gain programmable in 1db steps low transmit output noise floor: -41dbmv (160khz bw) low transmit-disable output noise: -70dbmv shutdown mode
max3509应用/使用
电缆调制解调器
catv基础结构
catv状态监视
opencatv机顶盒
线缆电话
max3509应用电路
典型工作电路
厉害了！80岁老奶奶玩VR：竟掏出真枪对屏幕怒射
印制电路板感光阻焊白油黄变的原因及改善方法
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TI（德州仪器）工程师给出的五条建议
MAX3509 CATV上行放大器(含应用电路和参数资料)
对网络攻击和威胁的预测和检测
千兆宽带网络如何驱动经济增长
人脸识别助力警方抓获北大弑母案逃犯 为警方破案提供智能化的武器
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Synopsys将收购思源科技（SpringSoft）
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2022年性价比高的耳机有哪些？适合学生党的蓝牙耳机推荐
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软通动力彭强：拥抱智能化时代 加速转型升级
瞬间售罄 华为Mate9 Pro首发 京东抢购成功体验
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