400MHz至2.5GHz、低噪声、SiGe下变频混频器

 

器件号	Replacement	Explanation

说明

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The MAX2680/MAX2681/MAX2682 miniature, low-cost, low-noise downconverter mixers are designed for low-voltage operation and are ideal for use in portable communications equipment. Signals at the RF input port are mixed with signals at the local oscillator (LO) port using a double-balanced mixer. These downconverter mixers operate with RF input frequencies between 400MHz and 2500MHz, and downconvert to IF output frequencies between 10MHz and 500MHz.

The MAX2680/MAX2681/MAX2682 operate from a single +2.7V to +5.5V supply, allowing them to be powered directly from a 3-cell NiCd or a 1-cell Lithium battery. These devices offer a wide range of supply currents and input intercept (IIP3) levels to optimize system performance. Additionally, each device features a low-power shutdown mode in which it typically draws less than 0.1µA of supply current. Consult the Selector Guide for various combinations of IIP3 and supply current.

The MAX2680/MAX2681/MAX2682 are manufactured on a high-frequency, low-noise, advanced silicon-germanium process and are offered in the space-saving 6-pin SOT23 package.

MAX2680、MAX2681、MAX2682：典型工作电路 放大+

关键特性

• 400MHz to 2.5GHz Operation
• +2.7V to +5.5V Single-Supply Operation
• Low Noise Figure: 6.3dB at 900MHz (MAX2680)
• High Input Third-Order Intercept Point (IIP3 at 2450MHz)
  • -6.9dBm at 5.0mA (MAX2680)
  • +1.0dBm at 8.7mA (MAX2681)
  • +3.2dBm at 15.0mA (MAX2682)
• < 0.1µA Low-Power Shutdown Mode
• Ultra-Small Surface-Mount Packaging

应用

• 400MHz/900MHz/2.4GHz ISM波段无线装置
• 蜂窝电话/无绳电话
• IEEE 802.11与无线数据
• 个人通信系统(PCS)
• 无线本地环路(WLL)