Difference Amplifiers
A difference amplifier is a special purpose amplifier designed to measure differential signals, otherwise known as a subtractor. A key feature of a difference amplifier is its ability to remove unwanted common mode signals, known as common mode rejection (CMR). Unlike most types of amplifiers, difference amplifiers are typically able to measure voltages beyond the supply rails, and are used in applications where large dc or ac common-mode voltages are present. They are ideal for current and voltage monitoring. We offer a range of difference amplifiers, optimized for low distortion, low power, or high voltage performance.
For higher speed and fully differential amplifiers, please see differential amplifiers. For amplifiers with higher input impedance, please see instrumentation amplifiers.
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PRODUCT SELECTION TABLES
All Design Tools
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Filter
Analog Filter Wizard 2.0
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.
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Photodiode
Analog Photodiode Wizard
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.
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Amp Tools
Amp Tools
View all tools available for Analog Devices' Amplifiers products.
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Product Search
Product Search
Search, compare and select products using our parametric selection tables.
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ADIsimADC
ADIsimADC
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.
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ADIsimDAC
ADIsimDAC
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.
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ADC/DAC Tools
Amp Tools
View all tools available for Analog Devices' Data Converters products.
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Product Search
Product Search
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ADIsimRF
ADIsimRF
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.
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ADIsimPLL
ADIsimPLL
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.
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RF Tools
RF Tools
View all tools available for Analog Devices' RF ICs.
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Product Search
Product Search
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ADIsimPower
ADIsimPower
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.
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Digital Power Management
Digital Power Management
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.
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Power Tools
Power Tools
View all tools available for Analog Devices' Power Management products.
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Product Search
Product Search
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Difference Amplifiers
| 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 |
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Upcoming Webinar Broadcast Event: System-level Analog Architectures for Process Control I/O Modules
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Tiny Difference Amps:
Small Size, Small Price, Big Performance.
