概览

优势和特点

  • Factory Set Gain
    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 -70dB @ 5MHz
  • Excellent Video Specifications (RL=150 Ω)
    Gain Flatness 0.1dB to 50MHz
    0.01% Differential Gain Error
    0.02° Differential Phase Error
  • Low Power of 50 mW/Amplifier (5mA)
  • High Speed and Fast Settling
    260MHz, -3dB Bandwidth
    750 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

产品详情

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.

产品生命周期 icon-recommended 量产

该产品系列中至少有一个型号已量产并可供采购。该产品适合用于新设计,但也可能有更新的替代产品。

工具及仿真模型

SPICE模型

AD8079 SPICE Macro Models

设计工具

ADIsimPE 由SIMetrix/SIMPLIS支持

ADIsimPE线性和混合信号电路仿真器–个人版

VRMS / dBm / dBu / dBV 计算器

功率测量和信号强度的标准单位之间的换算工具。

功耗与芯片温度的关系分析

该工具根据电源电压、环境温度、负载特性和封装热数据估算芯片温度和功耗。

设计资源

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PCN-PDN信息

样片申请及购买

电脑版网站提供样片和购买功能
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