MAX19791ETX+T

The MAX19791 dual general-purpose analog voltage variable attenuator (VVA) is designed to interface with 50Ω systems operating in the 50MHz to 4000MHz frequency range. The device includes a patented control circuit that provides 23dB of attenuation range (per attenuator) with a typical linear control slope of 8dB/V.

Key Features

• Wideband Coverage
  • 50MHz to 4000MHz RF Frequency Range
• High Linearity
  • Greater Than +37.4dBm IIP3 Over the Full Attenuation Range
  • +22.6dBm Input P_1dB
• Integrates Two Analog Attenuators in One Monolithic Device
• Two Convenient Control Options
  • Single Analog Voltage
  • On-Chip SPI-Controlled 10-Bit DAC
• Step-Up/Down Pulse Command Inputs
• Flexible Attenuation Control Ranges
  • 23dB (Per Attenuator)
  • 46dB (Both Attenuators Cascaded)
• Linear dB/V Analog Control Response Curve Simplifies Automatic Leveling Control and Gain-Trim Algorithms
• Excellent Attenuation Flatness Over Wide Frequency Ranges and Attenuation Settings
• On-Chip Comparator (for Successive Approximation Measurement of Attenuator Control Voltage)
• Low 13mA Supply Current
• Single 5V or 3.3V Supply Voltage
• Pin-Compatible with the MAX19792 and MAX19793
• Pin-Compatible with the MAX19794 with Addition of Two Shunt Capacitors
• PCB-Compatible with the MAX19790
• Lead(Pb)-Free Package

Application

• Automatic Level Control (ALC)
• Broadband System Applications, Including Wireless Infrastructure Digital and Spread-Spectrum Communication Systems
• General Test Equipment
• Lineup Gain Trim
• Microwave Point-to-Point Systems
• Receiver Gain Control
• Temperature-Compensation Circuits
• Transmitter Gain Control
• VSAT/Satellite Modems
• WCDMA/LTE, TD-SCDMA/TD-LTE, WiMAX®, cdma2000®, GSM/EDGE, and MMDS Base Stations