AD8079 - Dual 260 MHz Gain = +2.0 & +2.2 Buffer

AD8079是AD公司的一款运算放大器产品，AD8079是Dual 260 MHz Gain = +2.0 & +2.2 Buffer，本站介绍了AD8079的封装应用图解、特点和优点、功能等，并给出了与AD8079相关的AD元器件型号供参考。

AD8079 - Dual 260 MHz Gain = +2.0 & +2.2 Buffer - 运算放大器 - 视频缓冲器 - Analog Devices

产品描述

The AD8079 is a dual, low power, high speed buffer designed to operate on ±5 V supplies. The AD8079's pinout offers excellent 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 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 converters.

The AD8079 features a unique transimpedance linearization circuitry. This allows it to drive video loads with excellent differential 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 portable 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.

优势和特点

Factory Set GainGain of 2.2 Compensates for System Gain LossMinimizes External ComponentsTight Control of Gain and Gain Matching (0.1%)

Optimum Dual PinoutSimplifies PCB LayoutLow Crosstalk of -70dB @ 5MHz

Excellent Video Specifications (RL=150 ?)Gain Flatness 0.1dB to 50MHz0.01% Differential Gain Error0.02° Differential Phase Error

Low Power of 50 mW/Amplifier (5mA)

High Speed and Fast Settling260MHz, -3dB Bandwidth750 V/μs Slew Rate (2 V Step), 800 V/μs 4 V Step)40 ns Settling Time to 0.1% (2V Step)

Low Distortion of -65dBc THD, fc=5MHz

High Output Drive of Over 70mA

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