MAX2063

Dual 50MHz to 1000MHz High-Linearity, Serial/Parallel-Controlled Digital VGA

Industry's Only Fully Programmable, Multistate Dual Digital VGA


Description

The MAX2063 high-linearity, dual digital variable-gain amplifier (VGA) operates in the 50MHz to 1000MHz frequency range. Each digital attenuator is controlled as a slave peripheral using either the SPI-compatible interface or a 5-bit parallel bus with 31dB total adjustment range in 1dB steps. An added feature allows "rapid-fire" gain selection between each of four steps, preprogrammed by the user through the SPI-compatible interface. A separate 2-pin control allows the user to quickly access any one of four customized attenuation states without reprogramming the SPI bus.

Since each of the stages has its own external RF input and RF output, this component can be configured to either optimize noise figure (amplifier configured first) or OIP3 (amplifier configured last). The device's performance features include 24dB of amplifier gain (amplifier only), 5.6dB noise figure (NF) at maximum gain (including attenuator insertion losses), and a high OIP3 level of +41dBm. Each of these features makes the device an ideal VGA for multipath receiver and transmitter applications.

In addition, the device operates from a single +5V supply with full performance, or a +3.3V supply for an enhanced power-savings mode with lower performance. This device is available in a compact 48-pin thin QFN package (7mm × 7mm) with an exposed pad. Electrical performance is guaranteed over the extended temperature range, from TC = -40°C to +85°C.
MAX2063: Typical Application Circuit MAX2063: Typical Application Circuit Enlarge+

Key Features

  • Independently Controlled Dual Paths
  • 50MHz to 1000MHz RF Frequency Range
  • Pin-Compatible Family Includes
    • MAX2062 (Analog/Digital VGA)
    • MAX2064 (Analog-Only VGA)
  • 21.3dB (typ) Maximum Gain
  • 0.25dB Gain Flatness Over 100MHz Bandwidth
  • 31dB Gain Range
  • 58dB Path Isolation at 200MHz
  • Supports Four "Rapid Fire" Preprogrammed Attenuator States
    • Quickly Access Any One of Four Customized Attenuation States without Reprogramming the SPI Bus
    • Ideal for Fast-Attack, High-Level Blocker Protection
    • Prevents ADC Overdrive Condition
  • Excellent Linearity at 200MHz
    • +41dBm OIP3
    • +56dBm OIP2
    • +19dBm Output 1dB Compression Point
  • 5.6dB Typical Noise Figure
  • 25ns Digital Switching Time
  • Very Low Distortion VGA Amplitude Overshoot/Undershoot of 0.05dB
  • Single +5V Supply (or +3.3V Operation)
  • Amplifier Power-Down Mode for TDD Applications

Applications/Uses

  • Cellular Band WCDMA and cdma2000® Base Stations
  • Fixed Broadband Wireless Access
  • GSM 850/GSM 900 EDGE Base Stations
  • IF and RF Gain Stages
  • Temperature-Compensation Circuits
  • WiMAX ®and LTE Base Stations and Customer Premise Equipment
  • Wireless Local Loop

Technical Documents

Tutorial 5429 The IP3 Specification - Demystified
Tutorial 5100 General Layout Guidelines for RF and Mixed-Signal PCBs

Quality and Environmental Data

Product Reliability Reports: MAX2063.pdf 
Lead-Free Package Tin (Sn) Whisker Reports

Related Resources


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