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AD8079ARZ датащи(PDF) 1 Page - Analog Devices |
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AD8079ARZ датащи(HTML) 1 Page - Analog Devices |
1 / 12 page a AD8079 FEATURES Factory Set Gain AD8079A: Gain = +2.0 (Also +1.0 & –1.0) AD8079B: Gain = +2.2 (Also +1 & –1.2) Gain of 2.2 Compensates for System Gain Loss Minimizes External Components Tight Control of Gain and Gain Matching (0.1%) Optimum Dual Pinout Simplifies PCB Layout Low Crosstalk of –70 dB @ 5 MHz Excellent Video Specifications (RL = 150 ) Gain Flatness 0.1 dB to 50 MHz 0.01% Differential Gain Error 0.02 Differential Phase Error Low Power of 50 mW/Amplifier (5 mA) High Speed and Fast Settling 260 MHz, –3 dB Bandwidth 750 V/ s Slew Rate (2 V Step), 800 V/ s (4 V Step) 40 ns Settling Time to 0.1% (2 V Step) Low Distortion of –65 dBc THD, fC = 5 MHz High Output Drive of Over 70 mA Drives Up to 8 Back-Terminated 75 Loads (4 Loads/ Side) While Maintaining Good Differential Gain/ Phase Performance (0.01%/0.17 ) High ESD Tolerance (5 kV) Available in Small 8-Pin SOIC APPLICATIONS Differential A-to-D Driver Video Line Driver Differential Line Driver Professional Cameras Video Switchers Special Effects RF Receivers FUNCTIONAL BLOCK DIAGRAM 8-Pin Plastic SOIC 1 2 3 4 5 6 7 8 AD8079 +IN1 GND GND +IN2 OUT1 +VS –VS OUT2 Dual 260 MHz Gain = +2.0 & +2.2 Buffer REV. A 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 which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. PRODUCT DESCRIPTION The AD8079 is a dual, low power, high speed buffer designed to operate on ±5 V supplies. The AD8079’s pinout offers excel- lent input and output isolation compared to the traditional dual amplifier pin configuration. With two ac ground pins separating both the inputs and outputs, the AD8079 achieves very low crosstalk of less than –70 dB at 5 MHz. Additionally, the AD8079 contains gain setting resistors factory set at G = +2.0 (A grade) or Gain = +2.2 (B grade) allowing circuit configurations with minimal external components. The B grade gain of +2.2 compensates for gain loss through a system by providing a single-point trim. Using active laser trimming of these resistors, the AD8079 guarantees tight control of gain and channel-channel gain matching. With its performance and con- figuration, the AD8079 is well suited for driving differential cables and transformers. Its low distortion and fast settling are ideal for buffering high speed dual or differential A-to-D con- verters. The AD8079 features a unique transimpedance linearization circuitry. This allows it to drive video loads with excellent differ- ential gain and phase performance of 0.01% and 0.02 ° on only 50 mW of power per amplifier. It features gain flatness of 0.1 dB to 50 MHz. This makes the AD8079 ideal for professional video electronics such as cameras and video switchers. The AD8079 offers low power of 5 mA/amplifier (VS = ±5 V) and can run on a single +12 V power supply while delivering over 70 mA of load current. All of this is offered in a small 8-pin SOIC package. These features make this amplifier ideal for por- table and battery powered applications where size and power are critical. The outstanding bandwidth of 260 MHz along with 800 V/ µs of slew rate make the AD8079 useful in many general purpose high speed applications where dual power supplies of ±3 V to ±6 V are required. The AD8079 is available in the industrial temperature range of –40 °C to +85°C. FREQUENCY – Hz 1M 1G 10M 100M –0.5 0.1 0 –0.1 –0.2 –0.3 –0.4 1 0 –9 –1 –2 –3 –4 –5 –6 –7 –8 SIDE 2 SIDE 1 SIDE 2 SIDE 1 RL = 100Ω VIN = 50mV rms 50 Ω 50 Ω Figure 1. Frequency Response and Flatness One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 617/329-4700 World Wide Web Site: http://www.analog.com Fax: 617/326-8703 © Analog Devices, Inc., 1996 |
Аналогичный номер детали - AD8079ARZ |
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Аналогичное описание - AD8079ARZ |
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