MAX19794

PRODUCTION

10MHz to 500MHz Dual Analog Voltage Variable Attenuator with On-Chip 10-Bit SPI-Controlled DAC

High-Performance RF VVA Features 46dB of Linearly Controlled Dynamic Range and Excellent Attenuation Flatness

Data Sheet (Rev. 1) Product Selection Table
Part Models
2
1ku List Price
Starting From $6.75
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Part Details

  • Wide Band Coverage
    • RF Frequency Range from 10MHz to 500MHz
  • High Linearity
    • Greater than +34.4dBm IIP3 over the Full Attenuation Range
    • +21.8dBm Input P1dB
  • 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
    • 22.4dB (per Attenuator)
    • 44.7dB (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 Similar with MAX19791, MAX19792, and MAX19793
  • Lead-Free Package
MAX19794
10MHz to 500MHz Dual Analog Voltage Variable Attenuator with On-Chip 10-Bit SPI-Controlled DAC
MAX19794: Typical Application Circuit
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Documentation

Data Sheet 1

Reliability Data 1

Technical Articles 1

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Hardware Ecosystem

Parts Product Life Cycle Description
Analog Control Variable Gain Amplifiers (VGAs) 3
MAX19790
PRODUCTION 250MHz to 4000MHz Dual, Analog Voltage Variable Attenuator
MAX19791
PRODUCTION 50MHz to 4000MHz Dual Analog Voltage Variable Attenuator with On-Chip 10-Bit SPI-Controlled DAC
MAX19793
PRODUCTION 1500MHz to 6000MHz Dual Analog Voltage Variable Attenuator with On-Chip 10-Bit SPI-Controlled DAC
Product 1
MAX19792
LAST TIME BUY 500MHz to 4000MHz Dual Analog Voltage Variable Attenuator with On-Chip 10-Bit SPI-Controlled DAC
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Tools & Simulations

Software Development 1

Evaluation Kits

MAX19794EVKIT

Evaluation Kit for the MAX19794

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Features and Benefits

  • Easy Evaluation of the MAX19794 IC
  • On-Board DAC which Outputs 4V ±5% to Control the Attenuation
  • On-Board Power Supply +3.3V and +5V from the MAX32625PICO
  • The Operating Frequency Range Extends from10MHz to 500MHz
  • 50Ω SMA Connectors on the RF Ports
  • All Critical Peripheral Components Included
  • A Micro USB Port to Interface with the PC
  • PC Control Software

Product Details

The MAX19794 evaluation kit (EV kit) simplifies the evaluation of the MAX19794. The MAX19794 dual general- purpose analog voltage variable attenuator (VVA) is designed to interface with 50Ω systems operating in the 10MHz to 500MHz frequency range.

The MAX19794 is a monolithic VVA IC designed for broadband system applications, including wireless infrastructure digital and spread-spectrum communication systems WCDMA/LTE, TD-SCDMA/TD-LTE, WiMAX®, cdma2000®, GSM/EDGE, and MMDS Base Stations VSAT/Satellite Modems. The MAX19794 evaluation kit hosts a microcontroller (MCU) that uses a serial peripheral interface to configure internal registers and modes. Graphical User Interface (GUI) software running on a computer makes it simple to program registers and control the device operation. The evaluation kit is fully assembled and tested at the factory.

This document provides a component list, a list of equipment required to evaluate the device, a straightforward test procedure to verify functionality, a description of the EV kit circuit, the circuit schematic, and artwork for each layer of the printed circuit board (PCB).

Applications

  • 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
MAX19794EVKIT
Evaluation Kit for the MAX19794

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