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AD654:  Low Cost Monolithic Voltage-to-Frequency Converter

产品状态:量产
Data
Sheet
AD654 英文产品数据手册 Rev B, 12/1999 (pdf 180kB) （关于数据手册）

产品详情

产品状态:量产
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The AD654 is a monolithic V/F converter consisting of an input amplifier, a precision oscillator system, and a high current output stage. A single RC network is all that is required to set up any full scale (FS) frequency up to 500 kHz and any FS input voltage up to ±30 V. Linearity error is only 0.03% for a 250 kHz FS, and operation is guaranteed over an 80 dB dynamic range. The overall temperature coefficient (excluding the effects of external components) is typically ±50 ppm/°C. The AD654 operates from a single supply of 5 V to 36 V and consumes only 2.0 mA quiescent current.

The low drift (4 µV/°C typ) input amplifier allows operation directly from small signals such as thermocouples or strain gauges while offering a high (250 M(ohm)) input resistance. Unlike most V/F converters, the AD654 provides a square-wave output, and can drive up to 12 TTL loads, optocouplers, long cables, or similar loads.

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特点和优势

  • Low Cost
  • Single or Dual Supply,
    5 V to 36 V, ±5 V to ±18 V
  • Full-Scale Frequency Up to 500 kHz
  • Minimum Number of External Components Needed
  • Versatile Input Amplifier
    - Positive or Negative Voltage Modes
    - Negative Current Mode
    - High Input Impedance, Low Drift
  • Low Power: 2.0 mA Quiescent Current
  • Low Offset: 1 mV

Functional Block Diagram for AD654

AD654 Diagram

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文档

快讯名称 内容类型 文件类型
AD654: Low Cost Monolithic Voltage-to-Frequency Converter Data Sheet  (Rev B, 12/1999) (pdf, 180 kB) 产品数据手册 PDF
AN-361: Ask the Applications Engineer (V/F Converters)  (pdf, 287 kB) 应用笔记 PDF
AN-278: Operation and Applications of the AD654 IC V-to-F Converter  (pdf, 3376 kB) 应用笔记 PDF
AN-276: Analog to Digital Conversion by Using V/F Converters  (pdf, 646 kB) 应用笔记 PDF
Single-Supply Acceleration-to-Frequency Circuits
(Analog Dialogue, Vol. 29, No. 3, 1995) 		《模拟对话》杂志 HTML
High-Frequency Signal-Contamination 《模拟对话》杂志 HTML
Ask The Applications Engineer-3
(V/F Converters)
(Analog Dialogue, 30th Anniversary Reader Bonus) 		《模拟对话》杂志 HTML
RAQs index 非常见问题解答 HTML
What is a Voltage to Frequency Converter (VFC) and how can the be used to send analog signals over long distances without loss of accuracy? 常见问题解答 HTML
术语表 专业词汇表 HTML

评估套件，原理图符号和PCB封装

原理图符号和PCB封装— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

Sample样片申请及购买

价格，封装及供货状态

AD654 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
AD654JN 产品状态: 量产 8 ld PDIP 8 商业 Tube, 50 $ 5.00 $ 4.47 N  材料信息 查看PCN 订购
AD654JNZ 产品状态: 量产 8 ld PDIP 8 商业 Tube, 50 $ 4.45 $ 4.00 Y  材料信息 查看PCN 订购
AD654JNZ/+ 产品状态: 量产 8 ld PDIP 8 商业 Tube, 50 $ 7.05 $ 7.05 Y  材料信息 查看PCN 订购
AD654JR 产品状态: 量产 8 ld SOIC 8 商业 Tube, 98 $ 4.85 $ 4.35 N  材料信息 查看PCN 订购
AD654JR-REEL 产品状态: 量产 8 ld SOIC 8 商业 Reel, 2500 $ 0.00 $ 4.35 N  材料信息 查看PCN 订购
AD654JRZ 产品状态: 量产 8 ld SOIC 8 商业 Tube, 98 $ 4.20 $ 3.76 Y  材料信息 查看PCN 订购
AD654JRZ-REEL 产品状态: 量产 8 ld SOIC 8 商业 Reel, 2500 $ 0.00 $ 3.76 Y  材料信息 查看PCN 订购
AD654JRZ-REEL7 产品状态: 量产 8 ld SOIC 8 商业 Reel, 750 $ 0.00 $ 3.76 Y  材料信息 查看PCN 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。

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