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AD8027AR データシート(PDF) 1 Page - Analog Devices |
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AD8027AR データシート(HTML) 1 Page - Analog Devices |
1 / 24 page Low Distortion, High Speed Rail-to-Rail Input/Output Amplifiers AD8027/AD8028 FEATURES High speed 190 MHz, –3 dB bandwidth (G = +1) 100 V/µs slew rate Low distortion 120 dBc @ 1 MHz SFDR 80 dBc @ 5 MHz SFDR Selectable input crossover threshold Low noise 4.3 nV/√Hz 1.6 pA/√Hz Low offset voltage: 900 µV max Low power: 6.5 mA/amplifier supply current Power-down mode No phase reversal: VIN > |VS| + 200 mV Wide supply range: 2.7 V to 12 V Small packaging: SOIC-8, SOT-23-6, MSOP-10 APPLICATIONS Filters ADC drivers Level shifting Buffering Professional video Low voltage instrumentation GENERAL DESCRIPTION The AD8027/AD80281 is a high speed amplifier with rail-to- rail input and output that operates on low supply voltages and is optimized for high performance and wide dynamic signal range. The AD8027/AD8028 has low noise (4.3 nV/√Hz, 1.6 pA/√Hz) and low distortion (120 dBc @ 1 MHz). In appli- cations that use a fraction of or the entire input dynamic range and require low distortion, the AD8027/AD8028 is an ideal choice. Many rail-to-rail input amplifiers have an input stage that switches from one differential pair to another as the input sig- nal crosses a threshold voltage, which causes distortion. The AD8027/AD8028 has a unique feature that allows the user to select the input crossover threshold voltage through the SELECT pin. This feature controls the voltage at which the complementary transistor input pairs switch. The AD8027/ AD8028 also has intrinsically low crossover distortion. CONNECTION DIAGRAMS SOT-23-6 (RT) VOUT 1 –VS 2 +IN 3 5 6 +VS DISABLE/SELECT 4 –IN +– 03327-B-001 NC = NO CONNECT NC SOIC-8 (R) 1 –IN 2 +IN 3 –VS 4 +VS VOUT NC 8 7 6 5 DISABLE/SELECT VOUTB –IN B +IN B 8 7 6 5 +VS VOUTA SOIC-8 (R) 1 –IN A 2 +IN A 3 –VS 4 + – + – VOUTB 10 9 +VS DISABLE/SELECT B –IN B +IN B 8 7 6 DISABLE/SELECT A VOUTA MSOP-10 (RM) 1 –IN A 2 +IN A 3 –VS 4 5 + – + – Figure 1. Connection Diagrams (Top View) With its wide supply voltage range (2.7 V to 12 V) and wide bandwidth (190 MHz), the AD8027/AD8028 amplifier is designed to work in a variety of applications where speed and performance are needed on low supply voltages. The high per- formance of the AD8027/AD8028 is achieved with a quiescent current of only 6.5 mA/amplifier typical. The AD8027/AD8028 has a shut down mode that is controlled via the SELECT pin. The AD8027/AD8028 is available in SOIC-8, MSOP-10, and SOT-23-6 packages. They are rated to work over the industrial temperature range of –40°C to +125°C. OUTPUT VOLTAGE (V p-p) 012 345 678 9 10 –140 –120 –100 –80 –60 –40 –20 G = +1 FREQUENCY = 100kHz RL = 1kΩ VS = ±5V VS = +3V VS = +5V 03327-A-063 Figure 2. SFDR vs. Output Amplitude 1Protected by U.S. patent numbers 6,486,737B1; 6,518,842B1 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: 781.326.8703 © 2003 Analog Devices, Inc. All rights reserved. |
同様の部品番号 - AD8027AR |
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同様の説明 - AD8027AR |
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