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.
Gain of 2.2 Compensates for System Gain Loss
Minimizes External Components
Tight Control of Gain and Gain Matching (0.1%)
Simplifies PCB Layout
Low Crosstalk of -70dB @ 5MHz
Gain Flatness 0.1dB to 50MHz
0.01% Differential Gain Error
0.02° Differential Phase Error
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)
AD8079 SPICE Macro-Model
|AD8079: Dual 260 MHz Gain = +2.0 & +2.2 Buffer Data Sheet (Rev. A)||PDF 348 kB|
|AN-402: Replacing Output Clamping Op Amps with Input Clamping Amps||PDF 55 kB|
|AN-581: Biasing and Decoupling Op Amps in Single Supply Applications (Rev. 0)||PDF 166 kB|
|AN-356: User's Guide to Applying and Measuring Operational Amplifier Specifications||PDF 538 kB|
|AN-417: Fast Rail-to-Rail Operational Amplifiers Ease Design Constraints in Low Voltage High Speed Systems||PDF 228 kB|
|AN-402: 以输入箝位放大器取代输出箝位运算放大器 (Rev. 0)||PDF 294 kB|
|AN-417: 在低压高速系统中利用快速轨到轨运算放大器减少设计限制 (Rev. 0)||PDF 228 kB|
|AN-356: 用户指南：运算放大器规格参数的应用和测量 (Rev. 0)||PDF 538 kB|
|AN-581: 单电源应用中的偏置和去耦运算放大器 (Rev. 0)||PDF 0|
|AN-649: Using the Analog Devices Active Filter Design Tool (Rev. 0)||PDF 5.3 M|
|产品型号||封装||包装数量||温度范围||美金报价 100-499||美金报价 1000+||RoHS|
|AD8079AR 量产||8 ld SOIC||OTH 98||-40 至 85至||7.2||6.53||N|
|AD8079ARZ 量产||8 ld SOIC||OTH 98||-40 至 85至||5.05||4.56||Y|
|AD8079ARZ-REEL 量产||8 ld SOIC||REEL 2500||-40 至 85至||0||4.56||Y|
|AD8079ARZ-REEL7 量产||8 ld SOIC||REEL 1000||-40 至 85至||5.05||4.56||Y|
|AD8079BRZ 量产||8 ld SOIC||OTH 98||-40 至 85至||6.57||5.93||Y|
|AD8079BRZ-REEL 量产||8 ld SOIC||REEL 2500||-40 至 85至||0||5.93||Y|
|AD8079BRZ-REEL7 量产||8 ld SOIC||REEL 1000||-40 至 85至||6.57||5.93||Y|