添加到信号链设计器

AD8317:  1 MHz to 10 GHz , 50 dB Log Detector/Controller

产品详情

The AD8317 is a demodulating logarithmic amplifier, capable of accurately converting an RF input signal to a corresponding decibel-scaled output. It employs the progressive compression technique over a cascaded amplifier chain, each stage of which is equipped with a detector cell. The device can be used in either measurement or controller modes. The AD8317 maintains accurate log conformance for signals of 1 MHz to 8 GHz and provides useful operation to 10 GHz. The input dynamic range is typically 50 dB (re: 50 Ω) with error less than ±1 dB. The AD8317 has 8 ns/10 ns response time (fall time/rise time) that enables RF burst detection to a pulse rate of beyond 50 MHz. The device provides unprecedented logarithmic intercept stability vs. ambient temperature conditions. A supply of 3.0 V to 5.5 V is required to power the device. Current consumption is typically 22 mA, and it decreases to 200 μA when the device is disabled.

The AD8317 can be configured to provide a control voltage to a power amplifier or a measurement output from the VOUT pin. Because the output can be used for controller applications, special attention has been paid to minimize wideband noise. In this mode, the setpoint control voltage is applied to the VSET pin.

The feedback loop through an RF amplifier is closed via VOUT, the output of which regulates the output of the amplifier to a magnitude corresponding to VSET. The AD8317 provides 0 V to (VPOS − 0.1 V) output capability at the VOUT pin, suitable for controller applications. As a measurement device, VOUT is externally connected to VSET to produce an output voltage VOUT that is a decreasing linear-in-dB function of the RF input signal amplitude.

The logarithmic slope is −22 mV/dB, determined by the VSET interface. The intercept is 15 dBm (re: 50 Ω, CW input) using the INHI input. These parameters are very stable against supply and temperature variations.

The AD8317 is fabricated on a SiGe bipolar IC process and is available in a 2 mm × 3 mm, 8-lead LFCSP with an operating temperature range of −40°C to +85°C.

Applications

  • RF transmitter PA setpoint control and level monitoring
  • Power monitoring in radiolink transmitters
  • RSSI measurement in base stations, WLANs, WiMAX, and radars
  • Data Sheet, Rev. A, 8/07

    特点和优势

    • Wide bandwidth: 1 MHz to 10 GHz
    • High accuracy: ±1.0 dB over temperature
    • 50 dB dynamic range up to 8 GHz
    • Stability over temperature: ±0.5 dB
    • Low noise measurement/controller
      output VOUT
    • Pulse response time: 8 ns/10 ns (fall/rise)
    • Small footprint, 2 mm × 3 mm LFCSP
    • Supply operation: 3.0 V to 5.5 V @ 22 mA
    • Fabricated using high speed SiGe process

    Functional Block Diagram for AD8317

    文档

    快讯名称 内容类型 文件类型
    AD8317: 1 MHz to 10 GHz, 50 dB Log Detector/Controller Data Sheet (Rev B, 03/2008) (pdf, 775 kB) 产品数据手册 PDF
    AN-1040: RF功率校准提高无线发射机的性能  (pdf, 0) 应用笔记 PDF
    AN-1040: RF Power Calibration Improves Performance of Wireless Transmitters  (pdf, 152 kB) 应用笔记 PDF
    Measurement and Control of RF Power
    by Eamon Nash, Analog Devices, Inc.
    技术文章 HTML
    Detecting Fast RF Bursts using Log Amps  (pdf, 174 kB)
    by Yuping Toh, Analog Devices, Inc.
    技术文章 PDF
    Make Precise Base-Station Power Measurements  (pdf, 1764 kB)
    (Microwaves and RF, November 2002)
    技术文章 PDF
    Log Amps and Directional Couplers Enable VSWR Detection  (pdf, 2223 kB)
    by Anil Rachakonda and Larry Hawkins, Analog Devices, Inc. (RF Design, 1/1/2007)
    技术文章 PDF
    Measuring VSWR and Gain in Wireless Systems  (pdf)
    By Eamon Nash, Analog Devices Inc., (Microwave Journal, Nov 2005)
    技术文章 PDF
    Measuring the RF Power in CDMA2000 and W-CDMA High Power Amplifiers (HPAs)  (pdf, 609 kB)
    By Larry Hawkins, Analog Devices, Inc. (MPD Digest, Nov. 2005)
    技术文章 PDF
    Design a Logamp RF Pulse Detector  (pdf, 338 kB)
    by Eamon Nash
    (Microwaves & RF, January 1, 2000)
    技术文章 PDF
    RF 手册  (pdf, 988 kB)
    RF IC 选型指南(12/2010)
    概况 PDF
    Industrial Applications 概况 HTML
    RAQs index 非常见问题解答 HTML
    What is an RF Detector, and how is it used? 常见问题解答 HTML
    术语表 专业词汇表 HTML

    设计工具,模型,驱动及软件

    快讯名称 内容类型 文件类型
    ADIsimRF
    ADI公司的ADIsimRF设计工具可以计算RF信号链内的大部分重要参数,包括级联增益、噪声系数、IP3、P1dB和总功耗。
    ADIsim Design/Simulation Tools HTML
    ADIsimPLL™
    ADIsimPLL 可以对ADI公司的最新高性能PLL产品进行快速、可靠的评估。它是目前最全面的PLL频率合成器设计和仿真工具,可实现所有对PLL性能有显著影响的重要非线性效应仿真。ADIsimPLL可以免去设计过程中的至少一项重复劳动,从而加快上市速度。
    ADIsim Design/Simulation Tools HTML

    评估套件,原理图符号和PCB封装

    评估板和开发套件查看评估板和套件页面以了解文档和采购信息

    原理图符号和PCB封装— ADI公司提供与当今众多CAD系统兼容的原理图符号和PCB封装(Symbols & Footprints),以便更广泛、更轻松地使用。

    产品推荐及参考设计

    推荐配套产品

    建议配套产品


    推荐AD8317使用的低噪声电压调节器

    • 如需3 V、150 mA固定输出低压差调节器,推荐使用ADP150
    • 如需3 V、300 mA固定输出低压差调节器,推荐使用ADP7102
    推荐电源解决方案
    • 欲选择电压调节器产品,请使用ADIsimPower

    这些建议有帮助吗?

    Sample样片申请及购买

    价格,封装及供货状态

    AD8317 型号选项
    产品型号 封装 引脚 温度范围 包装和数量 报价*(100-499) 报价*1000 pcs RoHS 查看PCN/PDN 查看库存/
    购买/样片
    AD8317ACHIPS 产品状态: 量产 CHIPS OR DIE 0 工业 Tray, 456 $ 0.00 $ 0.00 Y  材料信息 通知我 订购
    AD8317ACPZ-R2 产品状态: 量产 8 ld LFCSP (2x3x.85mm) 8 工业 Reel, 250 $ 5.05 $ 5.05 Y  材料信息 通知我 订购
    AD8317ACPZ-R7 产品状态: 量产 8 ld LFCSP (2x3x.85mm) 8 工业 Reel, 3000 - $ 3.98 Y  材料信息 通知我 订购 样片
    AD8317ACPZ-WP 产品状态: 量产 8 ld LFCSP (2x3x.85mm) 8 工业 Tray, 50 $ 5.05 $ 5.05 Y  材料信息 通知我 订购
    帮助

    这里所列出的美国报价单仅供预算参考,指美元报价(规定订量的每片美元,美国离岸价),如有修改不再另行通知。由于地区关税、商业税、汇率及手续费原因,国际报价可能不同。对于特殊批量报价,请与您当地的ADI公司办事处或代理商联络。对于评估板和套件的报价是指一个单位价格。

    AD8317 评估板
    产品型号 描述 报价 RoHS 查看PCN/PDN 查看库存/
    购买/样片
    AD8317-EVALZ 产品状态: 量产 Evaluation Board $ 100.19 -

    所示报价为单片价格。所列的美国报价单仅供预算参考,指美元报价(每片美国离岸价),如有修改,恕不另行通知。由于地区关税、商业税、汇率及手续费原因,国际报价可能不同。

    查看库存和订购

    浏览代理商名单
    沪ICP备09046653号
    产品评价 X
    content here.
    content here.

    产品评价

    关闭