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Ultra-Wideband, Direct-Conversion, L-Band Satellite Tuner

Industry's Widest L-Band Tuner with 1GHz RF Bandwidth

产品详情

The MAX2223 low-cost, direct-conversion tuner IC is de- signed for satellite set-top and very small aperture termi- nal (VSAT) applications. The device directly converts the satellite signals from the LNB to baseband using a broad- band I/Q downconverter. The operating frequency range extends from 925MHz to 2175MHz.

The device includes an LNA and an RF variable-gain amplifier, I and Q down-converting mixers, and baseband amplifiers. The RF variable-gain amplifier provides more than 70dB of gain control range. The device supports an RF bandwidth of 1GHz.

The device includes fully monolithic VCOs, as well as a complete fractional-N frequency synthesizer. Additionally, an on-chip crystal oscillator is provided along with a buffered output for driving additional tuners and demodulators. Synthesizer programming and device configuration are accomplished with a 2-wire serial interface. The IC features a VCO auto-select (VAS) function that automatically selects the proper VCO. For multituner applications, the device can be configured to have one of two 2-wire interface addresses. A low-power standby mode is available whereupon the signal path is shutdown while leaving the reference oscillator, digital interface, and buffer circuits active, providing a method to reduce power in single and multituner applications.

A small number of passive components are needed to form a complete broadband satellite tuner DVB-S2 RF front-end solution. The tuner is available in a very small, 5mm x 5mm, 28-pin TQFN package.

主要特征

  • 925MHz to 2175MHz Frequency Range
  • Monolithic VCO
    • Low Phase Noise: -97dBc/Hz at 10kHz
    • No Calibration Required
  • High Dynamic Range: -75dBm to 0dBm
  • 1GHz RF Bandwidth Supported
  • Single +3.3V ±5% Supply
  • Low-Power Standby Mode
  • Address Pin for Multituner Applications
  • Differential I/Q Interface
  • I2C-Compatible, 2-Wire Serial Interface
  • Very Small, 5mm x 5mm, 28-Pin TQFN Package

应用/用途

  • VSAT
Parametric specs for TV Tuners
Applications VSAT
Input Frequency (MHz) 925 to 2175
IF Output Frequency (MHz) 500
Noise Figure (dB) (typ) 8
VSUPPLY (V) 3.13 to 3.47
Footprint (mm x mm) 5.0 x 5.0
Oper. Temp. (°C) -40 to +85
Package/Pins TQFN/28
Budgetary
Price (See Notes)
$4.88 @1k
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简化框图

MAX2223: Typical Application Circuit MAX2223: Typical Application Circuit Zoom icon

技术文档

设计与质量

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描述

The MAX2223 evaluation kit (EV kit) simplifies evaluation of the MAX2223. The MAX2223 is a low-cost, directconversion tuner IC designed for satellite set-top and Very Small Aperture Terminal (VSAT) applications. The device directly converts the satellite signals from the LNB to baseband using a broadband I/Q down-converter. The operating frequency range extends from 925MHz to 2175MHz. The device supports an RF bandwidth of 1GHz.

This EV kit is a complete broadband satellite tuner DVBS2 RF front-end solution. It enables testing of the device performance and requires no additional support circuitry. Standard 50Ω SMA connectors are included on the EV kit for the inputs and outputs to allow for quick and easy evaluation on the lab bench. The MAX2223 evaluation kit contains a microcontroller (MCU) that uses a 2-wire I2Ccompatible serial interface to configure internal registers and modes. A Graphical User Interface (GUI) software running on a computer connected via USB makes it simple to program and control the device operation. The evaluation kit is fully assembled and tested at the factory.

This document provides a bill of materials, 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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特征

  • Easy Evaluation of the MAX2223 IC
  • Single 3.3V ± 5% Supply for IC
  • On-Board 5V ± 5% DAC for Gain Control
  • 925MHz to 2175MHz Operating Frequency Range
  • 50Ω SMA Connectors for the RF Ports and the Baseband Outputs
  • All Critical Peripheral Components Included
  • Micro USB Port for Interfacing with a PC
  • PC Control Software (Available at www.maximintegrated.com/evkitsoftware)

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仿真模型

MAX2223 IBIS

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参量

Parametric specs for TV Tuners
Applications VSAT
Input Frequency (MHz) 925 to 2175
IF Output Frequency (MHz) 500
Noise Figure (dB) (typ) 8
VSUPPLY (V) 3.13 to 3.47
Footprint (mm x mm) 5.0 x 5.0
Oper. Temp. (°C) -40 to +85
Package/Pins TQFN/28
Budgetary
Price (See Notes)
$4.88 @1k

主要特征

  • 925MHz to 2175MHz Frequency Range
  • Monolithic VCO
    • Low Phase Noise: -97dBc/Hz at 10kHz
    • No Calibration Required
  • High Dynamic Range: -75dBm to 0dBm
  • 1GHz RF Bandwidth Supported
  • Single +3.3V ±5% Supply
  • Low-Power Standby Mode
  • Address Pin for Multituner Applications
  • Differential I/Q Interface
  • I2C-Compatible, 2-Wire Serial Interface
  • Very Small, 5mm x 5mm, 28-Pin TQFN Package

应用/用途

  • VSAT

描述

The MAX2223 low-cost, direct-conversion tuner IC is de- signed for satellite set-top and very small aperture termi- nal (VSAT) applications. The device directly converts the satellite signals from the LNB to baseband using a broad- band I/Q downconverter. The operating frequency range extends from 925MHz to 2175MHz.

The device includes an LNA and an RF variable-gain amplifier, I and Q down-converting mixers, and baseband amplifiers. The RF variable-gain amplifier provides more than 70dB of gain control range. The device supports an RF bandwidth of 1GHz.

The device includes fully monolithic VCOs, as well as a complete fractional-N frequency synthesizer. Additionally, an on-chip crystal oscillator is provided along with a buffered output for driving additional tuners and demodulators. Synthesizer programming and device configuration are accomplished with a 2-wire serial interface. The IC features a VCO auto-select (VAS) function that automatically selects the proper VCO. For multituner applications, the device can be configured to have one of two 2-wire interface addresses. A low-power standby mode is available whereupon the signal path is shutdown while leaving the reference oscillator, digital interface, and buffer circuits active, providing a method to reduce power in single and multituner applications.

A small number of passive components are needed to form a complete broadband satellite tuner DVB-S2 RF front-end solution. The tuner is available in a very small, 5mm x 5mm, 28-pin TQFN package.

简化框图

MAX2223: Typical Application Circuit MAX2223: Typical Application Circuit Zoom icon

技术文档

支持和培训

在Maxim的知识库中搜索您所需的答案。

过滤搜索

Maxim专业的应用工程师团队也可以为您解答技术问题,请 访问Maxim的 支持中心