Overview
The AD8264ACPZ-RL, produced by Analog Devices Inc., is a quad, linear-in-dB, general-purpose variable gain amplifier (VGA) with a preamplifier (preamp) and a flexible differential output buffer. This device is designed for high-performance applications requiring wide bandwidth and low distortion. Each channel includes a single-ended input preamp/VGA section, preserving the wide bandwidth and fast slew rate necessary for low distortion pulse applications. The amplifier operates from a bipolar power supply, enabling the amplification of negative voltage pulses, and it supports delay-free processing of wideband video signals.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| −3 dB Small Signal Bandwidth (VGAx) | - | 235 | - | MHz |
| −3 dB Large Signal Bandwidth (VGAx) | - | 150 | - | MHz |
| Gain (VGAx to Differential Output) | 5.75 | 6 | 6.25 | dB |
| Supply Voltage | ±2.5 | - | ±5 | V |
| Power Consumption (Quiescent Current) at ±2.5 V | 65 | 79 | 88 | mA |
| Power Dissipation at ±2.5 V | - | - | 395 | mW |
| Operating Temperature Range | -40 | - | +85 | °C |
| Package Type | - | - | 40-Lead LFCSP (6mm x 6mm w/ EP) | - |
Key Features
- Quad, linear-in-dB, variable gain amplifier with a preamplifier and a flexible differential output buffer.
- DC-coupled with a wide bandwidth of 235 MHz for the preamp/VGA section and 80 MHz for the differential driver.
- Precise linear-in-dB gain control interface with a scale of 20 dB/V.
- Independent gain adjustment for each channel, referenced to a single pin (GNLO).
- Supports operation from a bipolar power supply, enabling amplification of negative voltage pulses.
- Low power consumption: 140 mW per channel at ±3.3 V.
- Common-mode and offset adjustments for the differential output buffer.
Applications
- Multichannel data acquisition.
- Positron emission tomography (PET).
- Gain trim applications.
- Industrial and medical ultrasound.
- Radar receivers.
Q & A
- What is the AD8264ACPZ-RL?
The AD8264ACPZ-RL is a quad, linear-in-dB, general-purpose variable gain amplifier (VGA) with a preamplifier and a flexible differential output buffer, produced by Analog Devices Inc..
- What is the bandwidth of the preamp/VGA section?
The −3 dB bandwidth of the preamp/VGA section is from DC to 235 MHz).
- What is the bandwidth of the differential driver?
The bandwidth of the differential driver is 80 MHz).
- How is the gain controlled in the AD8264?
The gain is controlled through a floating gain control interface with a precise linear-in-dB scale of 20 dB/V).
- Can the AD8264 operate with negative voltage pulses?
- What are the typical applications of the AD8264?
The AD8264 is used in multichannel data acquisition, positron emission tomography, gain trim applications, industrial and medical ultrasound, and radar receivers).
- What is the power consumption per channel at ±3.3 V?
The power consumption per channel at ±3.3 V is 140 mW).
- What type of package does the AD8264ACPZ-RL come in?
The AD8264ACPZ-RL comes in a 40-Lead LFCSP (6mm x 6mm w/ EP) package).
- What is the operating temperature range of the AD8264?
The operating temperature range is from -40°C to +85°C).
- Can the AD8264 be used for active calibration or as a trim amplifier?
