Datasheet for AD8264:
- Manufacturer Part Number : AD8264
- Manufacturer : AD
- Description : Quad, 235 MHz, DC-Coupled VGA and Differential Output Amplifier
- Series : AD8264
- Reference Price : USD 9.56
- Our Price : We have a better price, contact us by email
- Product Type : Variable Gain Amplifiers (VGA)
- Function : Analog Control VGAs
- Current Suggest : Recommended for New Designs
- Status : Production
- RoHS Status: -
- Voltage: -
- Feature: -
- Package Case: -
- Temperature Range: -
- Packing: Reel/Tray/Tube
- Standard Packing Quantity: -
- Country of Origin: -
- Other Part Number : AD8264
- Shipping methods : DHL FEDEX UPS TNT
- Delivery Time : Ship within 1 day.
- Manufacturer Production time : 6-8 weeks (Normally have stocks)
- Weight : 0.001KG
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- Low noise
- Voltage noise: 2.3 nV/√Hz
- Current noise: 2 pA/√Hz
- Wide bandwidth
- Small signal: 235 MHz (VGAx); 80 MHz (output amplifier)
- Large signal: 80 MHz (1 V p-p)
- Gain range
- 0 to 24 dB (input to VGA output)
- 6 to 30 dB (input to differential output)
- Gain scaling: 20 dB/V
- DC-coupled
- Single-ended input and differential output
- Supplies: ±2.5 V to ±5 V
- Low power: 140 mW per channel at ±3.3 V
The AD8264 is a quad, linear-in-dB, general-purpose, variable gain amplifier (VGA) with a preamplifier (preamp), and a flexible differential output buffer. DC coupling, combined with wide bandwidth, makes this amplifier a very good pulse processor. Each channel includes a single-ended input preamp/VGA section to preserve the wide bandwidth and fast slew rate for low distortion pulse applications. A 6 dB differential output buffer with common-mode and offset adjustments enable direct coupling to most modern high speed analog-to-digital converters (ADCs), using the converter reference output for perfect dc matching levels.
The −3 dB bandwidth of the preamp/VGA is dc to 235 MHz, and the bandwidth of the differential driver is 80 MHz. The floating gain control interface provides a precise linear-in-dB scale of 20 dB/V and is easy to interface to a variety of external circuits. The gain of each channel is adjusted independently, and all channels are referenced to a single pin, GNLO. Combined with a multioutput, digital-to-analog converter (DAC), each section of the AD8264 can be used for active calibration or as a trim amplifier.
Operation from a bipolar power supply enables amplification of negative voltage pulses generated by current-sinking pulses into a grounded load, such as is typical of photodiodes or photomultiplier tubes (PMT). Delay-free processing of wideband video signals is also possible.
Applications
- Multichannel data acquisition
- Positron emission tomography
- Gain trim
- Industrial and medical ultrasound
- Radar receivers
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
