Variable Gain Amplifiers (VGA)
Variable gain amplifiers (VGAs) have been used in a variety of remote sensing and communications equipment for more than a half-century. Applications ranging from ultrasound, radar, lidar to wireless communications—and even speech analysis—have utilized variable gain in an attempt to enhance dynamic performance.
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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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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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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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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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Analog Variable Gain Amplifiers
| Part# | Number of Channels | -3dB Bandwidth | Gain/Attenuate (min) | Gain/Attenuate (max) | Spectral Noise | Supply Current | Supply Voltage (V) | Gain Accuracy | Package | US Price 1000-4999 |
|---|---|---|---|---|---|---|---|---|---|---|
| ADL5565Reference Circuit Available | 1 | 6.75GHz | 0dB | 15.5dB | 1.52(nV/rtHz) | 80mA | 5.2V | 1dB | 16-Lead LFCSP |
$ |
| ADL5336Reference Circuit Available | 1 | - | -14.6dB | 19.5dB | - | 80mA | - | 100mdB | 32-Lead CSP |
$ |
| ADRF6516 | 2 | 31MHz | -5dB | 45dB | - | 360mA | - | 200mdB | 32-Lead CSP |
$ |
| ADRF6510Reference Circuit Available | 2 | 30MHz | -5dB | 45dB | - | 258mA | 5.25V | 100mdB | 32-Lead CSP |
$ |
| AD8264 | 4 | 235MHz | 0dB | 24dB | 2.3(nV/rtHz) | 99mA | 5V | 2dB | 40-Lead LFCSP |
$ |
| ADL5331Reference Circuit Available | 1 | 1.5GHz | -14dB | 17dB | - | 240mA | 5.25V | - | 24-Lead LFCSP |
$ |
| AD8336 | 1 | 115MHz | -14dB | 46dB | 3(nV/rtHz) | 25mA | 12V | 500mdB | 16-Lead LFCSP |
$ |
| ADL5391 | 1 | 2GHz | - | 9.5dB | 26.7(nV/rtHz) | 135mA | 5V | - | 16-Lead LFCSP |
$ |
| AD8334 | 4 | 100MHz | 4.5dB | 43.5dB | 740m(nV/rtHz) | 116mA | 5V | 500mdB | 64-Lead LFCSP |
$ |
| AD8368Reference Circuit Available | 1 | 800MHz | -12dB | 22dB | - | 60mA | 5V | 400mdB | 24-Lead LFCSP |
$ |
| AD8352Reference Circuit Available | - | 2.2GHz | 3dB | 25dB | 2.7(nV/rtHz) | 37mA | 5.5V | - | 16-Lead LFCSP |
$ |
| AD8337 | 1 | 280MHz | 0dB | 24dB | 2.2(nV/rtHz) | 15mA | 5V | 250mdB | 8-Lead LFCSP |
$ |
| ADL5330Reference Circuit Available | 1 | 3GHz | -32dB | 21dB | - | 215mA | 5.25V | - | 24-Lead LFCSP |
$ |
| AD8335 | 4 | 70MHz | -10dB | 38dB | 1.3(nV/rtHz) | 76mA | 5V | 200mdB | 64-Lead LFCSP |
$ |
| ADL5390 | 1 | 2.4GHz | -30dB | 5dB | - | 135mA | 5V | - | 24-Lead LFCSP |
$ |
| AD8340 | - | - | -32dB | -2dB | - | 130mA | - | - | - |
$ |
| AD8341 | - | - | -34.5dB | -4.5dB | - | 125mA | - | - | 24-Lead LFCSP |
$ |
| AD8331Reference Circuit Available | 1 | 120MHz | -4.5dB | 43dB | 740m(nV/rtHz) | 25mA | 5V | 500mdB | - |
$ |
| AD8351 | - | 2.2GHz | 0dB | 26dB | 2.7(nV/rtHz) | 28mA | 5.5V | - | 10-Lead uSOIC |
$ |
| AD8330 | 1 | 150MHz | 0dB | 50dB | 5(nV/rtHz) | 20mA | 6V | 500mdB | 16-Lead LFCSP, 16-Lead QSOP |
$ |
| AD8332 | 2 | 120MHz | -4.5dB | 43.5dB | 740m(nV/rtHz) | 58mA | 5V | 500mdB | 28-Lead TSSOP, 32-Lead CSP |
$ |
| AD8367 | 1 | 500MHz | -2.5dB | 42.5dB | 1.84(nV/rtHz) | 26mA | 5.5V | 200mdB | 14-Lead TSSOP |
$ |
| AD8350 | - | 900MHz | 15dB | 20dB | 1.7(nV/rtHz) | 28mA | 11V | - | 8-Lead SOIC/8-Lead uSOIC |
$ |
| AD604 | 2 | 40MHz | 0dB | 48dB | 800m(nV/rtHz) | 31mA | 5V | 300mdB | 24-Lead SOIC, 24-Lead SSOP |
$ |
| AD605 | 2 | 40MHz | -14dB | 34dB | 1.8(nV/rtHz) | 23mA | 5V | 200mdB | 16-Lead SOIC |
$ |
| AD603 | 1 | 90MHz | -11dB | 31dB | 1.4(nV/rtHz) | 20mA | 5V | 500mdB | 8-Lead DIP, 8-Lead SOIC |
$ |
| AD600 | 2 | 35MHz | 0dB | 40dB | 1.4(nV/rtHz) | 14mA | 5V | - | - |
$ |
| AD602 | 2 | 35MHz | -10dB | 30dB | 1.4(nV/rtHz) | 14mA | 5V | - | - |
$ |
Digital Variable Gain Amplifiers
| Part# | Number of Channels | -3dB Bandwidth | Spectral Noise | Gain Accuracy | Gain (min) | Gain (max) | Supply Voltage (V) | Supply Current | Package | US Price 1000-4999 |
|---|---|---|---|---|---|---|---|---|---|---|
| AD8338 | - | 18MHz | - | - | 0dB | 80dB | - | 4mA | - |
$ |
| ADL5201 | 1 | 700MHz | - | - | -11.5dB | 20dB | 5V | 110mA | 24-Lead LFCSP |
$ |
| ADL5202Reference Circuit Available | 2 | 700MHz | - | - | -11.5dB | 20dB | 5V | 210mA | 40-Lead LFCSP |
$ |
| ADL5240 | 1 | - | - | - | -13.1dB | 18dB | 5.25V | 93mA | 32-Lead CSP |
$ |
| ADL5243 | 1 | - | - | - | -1.2dB | 31.3dB | 5V | 175mA | 32-Lead CSP |
$ |
| AD8366 | 2 | 600MHz | - | - | 4.5dB | 20.25dB | 5V | 180mA | 32-Lead CSP |
$ |
| AD8260 | 1 | 180MHz | 2.4(nV/rtHz) | 250mdB | -6dB | 24dB | 3.3V | 28mA | - |
$ |
| AD8372 | 2 | 130MHz | - | 300mdB | -9dB | 32dB | 5.5V | 212mA | 32-Lead CSP |
$ |
| ADL5592 | 1 | 2.4GHz | - | 20mdB | -52.1dB | 8.9dB | 5V | 189mA | 40-Lead LFCSP |
$ |
| AD8375 | 1 | 630MHz | 1.9(nV/rtHz) | 200mdB | -4dB | 20dB | 5.5V | 125mA | 24-Lead LFCSP |
$ |
| AD8376Reference Circuit Available | 2 | 700MHz | 2(nV/rtHz) | 200mdB | -4dB | 20dB | 5.5V | 250mA | 32-Lead CSP |
$ |
| AD8370 | 1 | 750MHz | 2.1(nV/rtHz) | - | -11dB | 34dB | 5.5V | 79mA | 16-Lead TSSOP |
$ |
| AD8324 | 1 | 100MHz | 157(nV/rtHz) | 1dB | -25.5dB | 33.5dB | 3.3V | 207mA | 20-Lead LFCSP, 20-Lead QSOP |
$ |
| AD8369 | 1 | 600MHz | 2(nV/rtHz) | 500mdB | -5dB | 40dB | 5.5V | 37mA | 16-Lead TSSOP |
$ |
| AD8327 | 1 | 160MHz | 64(nV/rtHz) | 1dB | -18dB | 30dB | 5V | 105mA | 20-Lead TSSOP | ** |
| AD8325 | 1 | 100MHz | 56(nV/rtHz) | 1dB | -29.5dB | 30dB | 5V | 133mA | 28-Lead TSSOP |
$ |
| AD8321 | 1 | 120MHz | 20(nV/rtHz) | 1dB | -27.4dB | 26dB | 9V | 90mA | 20-Lead SOIC | ** |
Application Notes
- AN-934: 60 dB Wide Dynamic Range, Low Frequency AGC Circuit Using a Single VGA (pdf, 317 kB)
- AN-827: A Resonant Approach to Interfacing Amplifiers to Switched-Capacitor ADCs (pdf, 203 kB)
- AN-826: A 2.4 GHz WiMAX Direct Conversion Transmitter (pdf, 417 kB)
- AN-808: Multicarrier CDMA2000 Feasibility (pdf, 1535 kB)
- AN-669: Effectively Applying the AD628 Precision Gain Block (pdf, 193 kB)
- AN-589: Ways to Optimize the Performance of a Difference Amplifier (pdf, 115 kB)
NEW PRODUCTS
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AD8338- Low Power, 18 MHz Variable Gain Amplifier
The AD8338 is a variable gain amplifier (VGA) for applications that require a fully differential signal path, low power, low noise, and a well-defined gain over frequencies from LF to 18 MHz. The device can also operate using single-ended sources if required.
The basic gain function is linear-in-dB with a nominal gain range of 0 dB to 80 dB; the nominal gain range corresponds to a control More
Data Sheet Rev 0, 04/2013 (pdf 399kB)
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