MAX3509

CATV上行放大器

电缆上行放大器,提供66dBmV的输出电平,工作在5MHz至65MHz


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说明

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:典型工作电路 MAX3509:典型工作电路 放大+

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

应用

  • 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
申请可靠性报告: MAX3509 
型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C   Material Composition  

备注: 通过技术手段对故障率进行汇总,并映射到相关的材料部件号。 故障率与被测件的数量密切相关。

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