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Analog Devices Inc. HMC1122 数字步进衰减器

Analog Devices HMC1122 数字步进衰减器是 6 位衰减器，范围是 0.1-6GHz，以 0.5dB 步长提供 31.5dB 的衰减控制范围。 HMC1122 衰减器采用先进的硅工艺设计，功耗低，稳定时间快，ESD 稳健性高。 该器件针对频率和温度范围内出色的步长精度和高线性度进行了优化。 片上稳压器允许 HMC1122 衰减器在 3.3-5V 单电源运行范围上运行性能不会发生变化。 HMC1122 的射频输入和输出内部匹配至 50Ω，为双向可互换设计。射频输入和输出不需要任何外部匹配元器件。 HMC1122 衰减器集成一个驱动器，支持对衰减器进行串行和并行控制。 该器件还提供用户可选上电状态和串行输出端口，可级联其他串行控制元件。 安全状态转换确保在射频信号链中安全运行各元器件。

HMC1122's bidirectional, interchangeable RF inputs and outputs are internally matched to 50Ω. The RF inputs and outputs do not require any external matching components.

HMC1122 attenuators incorporate a driver that provides both serial and parallel control of the attenuator. The devices also feature a user-selectable power-up state and a serial output port for cascading other serial-controlled components. Safe-state transitions ensure the safe operation of the components in the RF signal chain.

特性

  • Attenuation range 0.5dB LSB steps to 31.5dB
  • Low insertion loss
    • 1.1dB at 1GHz
    • 1.3dB at 2GHz
  • High linearity
    • Input 0.1dB compression (P0.1dB) 30dBm typical
    • Input third-order intercept (IP3) 55dBm typical
  • Typical step error less than ±0.1dB
  • Safe-state transitions
  • Excellent attenuation accuracy
  • RF settling time (0.05dB final RF output) 250ns
  • Low phase shift error 6° at 1GHz
  • Single supply operation 3.3V to 5V
  • ESD rating Class 2 (2kV HBM)
  • 24-lead, 4×4mm LFCSP package 16mm²

应用

  • Cellular infrastructure
  • Microwave radios and very small aperture terminals (VSATs)
  • Test equipment and sensors
  • IF and RF designs

Block Diagram

框图 - Analog Devices Inc. HMC1122 数字步进衰减器
发布日期: 2016-04-18 | 更新日期: 2022-03-11