差动放大器是一种特殊用途放大器,旨在测量差分信号,也称为减法器。差动放大器能够移除干扰共模信号,称为共模抑制(CMR),这是它的一项主要特性。与大多数类型的放大器不同,差动放大器通常能够测量超出供电轨的电压,适合存在较大直流或交流共模电压的应用。差动放大器是电流和电压监控应用的理想选择。我们提供各种具有最佳低失真、低功耗或高电压性能的差动放大器。
欲了解更高速度的完全差分放大器产品,请参考差分放大器仪表放大器。

The Analog Filter Wizard™ helps you design a low-pass, high-pass, band-pass or band-stop filter with actual op amps. It then simulates the filter’s performance with these op amps in real time. You can ask the tool to optimize for power, noise, or voltage range, and it will pick op amps and passive components appropriately. Or you can adjust the components manually yourself.
The photodiode web tool helps you select and design the best circuit for your application. To use the tool, enter the specifications of your light input, including intensity, spectral band, and the required signal bandwidth. These inputs will narrow down the available photodiode part numbers.
View all tools available for Analog Devices' Amplifiers products.
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The ADIsimADC tool is an aid to help in the selection of Analog to Digital Converterse (ADC's), perform evaluations and assist with troubleshooting. The tool uses typical data values to mathematically model the general behavior of the selected ADC. It allows a user to apply input signals, set encode (sample) rates and simulate FFT's on a selected ADC. It is useful for checking the SNR, SFDR, SINAD, THD, ENOB etc. of a selected ADC.
ADIsimDAC assists the user with finding Analog Devices' DACs and DAC Application Circuits. It takes user inputs along Typical Parametric Data to sort, select and suggest applicable DAC's, system components and circuit solutions.
View all tools available for Analog Devices' Data Converters products.
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ADIsimRF is an easy-to-use RF signal chain calculator. Cascaded Gain, Noise Figure, IP3 and P1dB as well as total power consumption are calculated. The number of stages can be varied up to a maximum of 15. Additional stages can be inserted at any point in teh signal chain and individual stages can be temporarily disabled or deleted. The calculator can be switched between Transmit Mode and Receive Mode where calculations are presented output-referred and input-referred respectively.
The ADIsimPLL design tool is a comprehensive and easy-to-use PLL synthesizer design and simulation tool. All key non-linear effects that can impact PLL performance can be simulated, including phase noise, Fractional-N spurs, and anti-backlash pulse. ADIsimPLL design tool eliminates time-consuming iterations from the PLL/synthesizer development process.
View all tools available for Analog Devices' RF ICs.
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ADIsimPower™ Voltage Regulator Design Tool produces custom DC-DC converter designs in about one minute. The user enters 5 inputs and chooses to optimize for efficiency, PCB space, cost, or part count. Output is a complete schematic, BOM, efficiency plot, and performance summary. A PDF summary and a blank PCB is offered for each design to facilitate fast prototyping to verify the design.
ADI's digital PWM (pulse-width modulation) power control and management devices provide designers with a highly integrated circuit architecture and the flexibility to configure system power-supply parameters in a matter of minutes using an intuitive GUI (graphical user interface). Power design egnineers with no prior programming experience can use the GUI to monitor and quickly adjust power functions such as frequency, timing, voltage settings, and protection limits.
View all tools available for Analog Devices' Power Management products.
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| Part# | # Channels | Slew Rate | Bandwidth @ G=10 | Rail-Rail Out | Rail-Rail In | Supply Current | CMRR | THD+N | Input Offset Voltage | Gain (min) | Nonlinearity | Vos TC | Minimum Input Common Mode | Maximum Input Common Mode | Gain Error | Gain TC | Input Voltage Noise | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ADA4830-1Reference Circuit Available | ✓ | 1 | 220V/µs | - | No | Yes | 6.8mA | 65dB | - | - | - | - | - | -8.5V | 8.5V | - | - | - |
| AD8279 | 2 | 1.4V/µs | - | Yes | No | 200µA | 80dB | - | 50µV | - | - | 300nV/degC | -45.3V | 40.5V | 0.2% | 1ppm/C | 47nV/rtHz | |
| AD8277 | ✓ | 2 | 1.1V/µs | - | Yes | Yes | 200µA | 86dB | - | 200µV | - | 5ppm | 2µV/degC | -30.2V | 27V | 0.02% | 1ppm/C | 65nV/rtHz |
| AD8278 | 1 | 1.4V/µs | - | Yes | Yes | 200µA | 80dB | - | 100µV | - | 7ppm | 1µV/degC | -45.3V | 40.5V | 0.02% | 1ppm/C | 47nV/rtHz | |
| AD8276Reference Circuit Available | ✓ | 1 | 1.1V/µs | - | Yes | Yes | 200µA | 86dB | - | 200µV | - | 5ppm | 2µV/degC | -30.2V | 27V | 0.02% | 1ppm/C | 65nV/rtHz |
| AD8271Reference Circuit Available | 1 | 30V/µs | - | Yes | Yes | 2.6mA | 80dB | 110dB | 600µV | - | 1ppm | 2µV/degC | -15.4V | 15.4V | 0.02% | 2ppm/C | 38V/rtHz | |
| AD8274Reference Circuit Available | 1 | 20V/µs | 10MHz | No | Yes | 2.6mA | 77dB | 112dB | 700µV | - | 2ppm | 3µV/degC | -40.5V | 40.5V | 0.03% | 2ppm/C | 26nV/rtHz | |
| AD8275Reference Circuit Available | 1 | 25V/µs | - | Yes | Yes | 1.9mA | 86dB | 106dB | 500µV | - | 3ppm | 7µV/degC | -12.3V | 12V | 0.024% | 1ppm/C | 40nV/rtHz | |
| AD8270 | 2 | 30V/µs | - | Yes | Yes | 2.5mA | 76dB | 145dB | 1mV | - | - | 2µV/degC | -15.4V | 15.4V | 0.08% | 10ppm/C | 38V/rtHz | |
| AD8273 | 2 | 20V/µs | - | No | Yes | 2.5mA | 77dB | 112dB | 700µV | - | 50ppm | 3µV/degC | -40.5V | 40.5V | 0.05% | 10ppm/C | 26nV/rtHz | |
| AD628Reference Circuit Available | 1 | 300mV/µs | 600KHz | No | Yes | 1.6mA | 75dB | - | 1.5mV | - | 5ppm | 8µV/degC | -120V | 120V | 0.1% | 5ppm/C | 300V/rtHz | |
| AD629Reference Circuit Available | 1 | 2.1V/µs | - | No | Yes | 1mA | 86dB | - | 500µV | - | 10ppm | 10µV/degC | -270V | 270V | 0.03% | 10ppm/C | 550V/rtHz | |
| AD626 | - | 220mV/µs | 100KHz | No | No | 2mA | 80dB | - | 500µV | - | 140ppm | 6µV/degC | -24V | 24V | 1% | 150ppm/C | - | |
| AMP03 | 1 | 9.5V/µs | - | No | Yes | 2.5mA | 85dB | - | 400V | - | - | - | -20V | 20V | 0.008% | - | 90V/rtHz |