MAX19792

Obsolete

500MHz to 4000MHz 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. 2)

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Part Details

Wideband Coverage
- 500MHz to 4000MHz RF Frequency Range
High Linearity
- Greater Than +37.9dBm IIP3 Over the Full Attenuation Range
- +22.7dBm 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
- 23.2dB (Per Attenuator)
- 46.4dB (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 MAX19791 and MAX19793
Pin-Compatible with the MAX19794 with Addition of Two Shunt Capacitors
PCB-Compatible with the MAX19790
Lead(Pb)-Free Package

Documentation

Data Sheet 1

MAX19792: 500MHz to 4000MHz Dual Analog Voltage Variable Attenuator with On-Chip 10-Bit SPI-Controlled DAC Data Sheet (Rev.2) 07/22/2015

Technical Articles 1

PCBs Layout Guidelines for RF & Mixed-Signal 09/14/2011

This is the most up-to-date revision of the Data Sheet.

Hardware Ecosystem

Parts	Product Life Cycle	Description
Analog Control Variable Gain Amplifiers (VGAs) 4
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
MAX19794	PRODUCTION	10MHz to 500MHz Dual Analog Voltage Variable Attenuator with On-Chip 10-Bit SPI-Controlled DAC

Evaluation Kits

Evaluation Kit for the MAX19792

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Features and Benefits

Easy Evaluation of the MAX19792 IC
On-Board DAC which Outputs 4V ±5% to Control Attenuation
On-Board Power Supply +3.3V and +5V from MAX32625PICO
The Operating Frequency Range Extends from 500MHz to 4000MHz
50Ω SMA Connectors on the RF Ports
All Critical Peripheral Components Included
A Micro-USB Port to Interface with the PC
PC Control Software (Available at www.maximintegrated.com/EVKitSoftware)

Product Details

The MAX19792 evaluation kit (EV kit) simplifies the evaluation of the MAX19792. The MAX19792 dual general- purpose analog voltage variable attenuator (VVA) is designed to interface with 50Ω systems operating in the 500MHz to 4000MHz frequency range.

The MAX19792 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 MAX19792 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).

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