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AM422 データシート(PDF) 1 Page - Analog Microelectronics |
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AM422 データシート(HTML) 1 Page - Analog Microelectronics |
1 / 10 page VOLTAGE/CURRENT CONVERTER AM422 analog microelectronics April 99 Analog Microelectronics GmbH Phone: +49 (0)6131/91 073 – 0 1/10 An der Fahrt 13, D – 55124 Mainz Fax: +49 (0)6131/91 073 – 30 Rev. 2.1 Internet: www.analogmicro.de E–Mail: info@analogmicro.de FEATURES • Wide Supply Voltage Range: 6...35V • Wide Operating Temperature Range: –40°C...+85°C • Adjustable Voltage Reference: 4.5 to 10V • Operational Amplifier Input: 0.5...4.5V, 0...5V, other • Adjustable Offset Current • Available as Three– (0/4...20mA) or Two–Wire Version (4...20mA) • Adjustable Output Current Range • Protection Against Reverse Polarity • Protected Current Output APPLICATIONS • Sensor Interface • Industrial Process Control • Programmable Current Source • Current Source Reference GENERAL DESCRIPTION The AM422 is a low cost monolithic voltage– to–current converter specially designed for analog signal transmission. The AM422 is available in a 3– or 2–wire version, which al- lows applications with flexible input voltage ranges to be used for a standard output current. Output current range and current offset level are freely adjustable by external resistors. The IC consists of three basic sections: an opera- tional amplifier input stage for single ended input signals (0.5–4.5V, 0–10V, or other), a programmable 4.5 to 10V reference for trans- ducer excitation, and a current output, freely adjustable in a wide current range (4–20mA, 0–20mA, other). With the broad spectrum of possible input signals the AM422 is a flexible and multipurpose voltage–to–current converter for single ended transducers or voltage trans- mission. DELIVERY • DIL8 packages (samples) • SOP8 packages • Dice on 5“ blue foil BLOCK DIAGRAM VIN OUT RS SET VCC 2 1 3 4 7 GND AM422 Input Amplifier 5 G = 1 VREF 2 V I VREF VSET 6 8 Reference Voltage Figure 1 |
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同様の説明 - AM422 |
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