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AD8642ARZ-REEL Folha de dados(PDF) 1 Page - Analog Devices |
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AD8642ARZ-REEL Folha de dados(HTML) 1 Page - Analog Devices |
1 / 16 page Low Power, Rail-to-Rail Output Precision JFET Amplifier AD8641/AD8642/AD8643 Rev. B Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2005 Analog Devices, Inc. All rights reserved. FEATURES Low supply current: 250 µA max Very low input bias current: 1 pA max Low offset voltage: 750 µV max Single-supply operation: 5 V to 26 V Dual-supply operation: ±2.5 V to ±13 V Rail-to-rail output Unity-gain stable No phase reversal SC70 package APPLICATIONS Line-/battery-powered instruments Photodiode amplifiers Precision current sensing Medical instrumentation Industrial controls Precision filters Portable audio ATE GENERAL DESCRIPTION The AD8641/AD8642/AD8643 are low power, precision JFET input amplifiers featuring extremely low input bias current and rail-to-rail output. The ability to swing nearly rail-to-rail at the input and rail-to-rail at the output enables designers to buffer CMOS DACs, ASICs, and other wide output swing devices in single-supply systems. The outputs remain stable with capacitive loads of more than 500 pF. The AD8641/AD8642/AD8643 are suitable for applications utilizing multichannel boards that require low power to manage heat. Other applications include photodiodes, ATE reference level drivers, battery management, and industrial controls. The AD8641/AD8642/AD8643 are fully specified over the extended industrial temperature range of –40°C to +125°C. The AD8641 is available in 5-lead SC70 and 8-lead SOIC lead-free packages. The AD8642 is available in 8-lead MSOP and 8-lead SOIC lead-free packages. The AD8643 is available in 14-lead SOIC and 16-lead, 3 mm × 3 mm, LFCSP lead-free packages. PIN CONFIGURATIONS OUT 1 +IN 3 VEE 2 VCC 5 –IN 4 AD8641 TOP VIEW (Not to Scale) Figure 1. 5-Lead SC70 (KS-5) NC 1 –IN 2 +IN 3 VEE 4 NC 8 VCC 7 OUT 6 NC 5 AD8641 TOP VIEW (Not to Scale) NC = NO CONNECT Figure 2. 8-Lead SOIC (R-8) OUT A 1 –IN A 2 +IN A 3 V– 4 V+ 8 OUT B 7 –IN B 6 +IN B 5 AD8642 TOP VIEW (Not to Scale) Figure 3. 8-Lead SOIC (R-8) OUT A 1 –IN A 2 +IN A 3 V– 4 V+ 8 OUT B 7 –IN B 6 +IN B 5 AD8642 TOP VIEW (Not to Scale) Figure 4. 8-Lead MSOP (RM-8) OUT A 1 OUT D 14 –IN A 2 –IN D 13 +IN A 3 +IN D 12 V+ 4 V– 11 +IN B 5 +IN C 10 –IN B 6 –IN C 9 OUT B 7 OUT C 8 TOP VIEW (Not to Scale) AD8643 Figure 5. 14-Lead SOIC (R-14) 12 11 10 9 +IN C V– +IN D –IN D 1 –IN A 2 3 4 +IN B V+ +IN A AD8643 TOP VIEW PIN 1 INDICATOR NC = NO CONNECT Figure 6. 16-Lead LFCSP (CP-16) (Not Drawn to Scale) |
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