数据手册：MAX3509 电缆上行放大器，提供66dBmV的输出电平，工作在5MHz至65MHz .pdf [英文Rev.1(PDF,232kB)]
{该产品的所有型号已经停产。}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).
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典型工作电路
芯片订购型号
| 订购型号 | 产品状态 | 封装形式 | 工作温度 | RoHS/无铅 |
| MAX3509EUP | 停止供货 | TSSOP-EP；20引脚；42.9mm²封装信息 | -40°C至+85°C | RoHS/无铅：否材料分析 |
| MAX3509EUP+ | 停止供货 | TSSOP-EP；20引脚；42.9mm²封装信息 | -40°C至+85°C | RoHS/无铅：无铅材料分析 |
| MAX3509EUP+T | 停止供货 | TSSOP；20引脚封装信息 | -40°C至+85°C | 参考数据资料 |
| MAX3509EUP-T | 停止供货 | TSSOP-EP；20引脚；42.9mm²封装信息 | -40°C至+85°C | RoHS/无铅：否材料分析 |
- MAX3509 : CATV上行放大器 MAX3509
