Overview
The AD8337BCPZ-R2, produced by Analog Devices Inc., is a low noise, single-ended, linear-in-dB, general-purpose variable gain amplifier (VGA). This device is usable at frequencies from dc to 100 MHz, with a −3 dB bandwidth of 280 MHz. It is particularly suited for applications requiring high speed and low noise, such as industrial ultrasound, PET scanners, and video systems. The AD8337 uses the exclusive X-AMP® architecture, providing a gain range of 24 dB with precise linear-in-dB scaling of 19.7 dB/V, referenced to VCOM.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Supply Voltage | +5 V, ±2.5 V, or ±5 V | V |
| Power Dissipation | 185 mW (no signal, VPOS to VNEG = 10 V) | mW |
| Gain Range | 0 dB to 24 dB | dB |
| Gain Control Interface | 19.7 dB/V, referenced to VCOM | dB/V |
| Bandwidth | 280 MHz (−3 dB bandwidth) | MHz |
| Input/Output Configuration | Single-ended input and output | |
| Package Type | 8-Lead LFCSP (3mm x 3mm w/ EP) | |
| Operating Temperature Range | −40°C to +85°C | °C |
| Quiescent Current | 13.5 to 25.5 mA (each supply) | mA |
Key Features
- Low noise and high speed operation, making it ideal for applications such as gain trim, driving high-speed analog-to-digital converters (ADCs), and industrial ultrasound.
- Dual-supply operation, enabling gain control of negative-going pulses generated by photodiodes or photomultiplier tubes.
- Uncommitted operational current-feedback preamplifier (PrA) that can operate in inverting or noninverting configurations.
- Attenuator with a range of 24 dB and an output amplifier with a fixed gain of 8× (18.06 dB).
- Excellent bandwidth uniformity across the entire gain range and low output-referred noise.
- Compact 8-lead LFCSP (3mm x 3mm w/ EP) package.
Applications
- Gain trim applications.
- High performance AGC (Automatic Gain Control) systems.
- I/Q signal processing.
- Video applications.
- Industrial and medical ultrasound.
- Radar receivers.
- PET scanners.
Q & A
- What is the operating frequency range of the AD8337?
The AD8337 operates at frequencies from dc to 100 MHz, with a −3 dB bandwidth of 280 MHz.
- What are the supply voltage options for the AD8337?
The AD8337 can be supplied with +5 V, ±2.5 V, or ±5 V.
- What is the gain range of the AD8337?
The gain range of the AD8337 is 0 dB to 24 dB.
- What is the package type of the AD8337BCPZ-R2?
The AD8337BCPZ-R2 is packaged in an 8-Lead LFCSP (3mm x 3mm w/ EP).
- What are some key applications of the AD8337?
The AD8337 is used in applications such as industrial ultrasound, PET scanners, video systems, and high performance AGC systems.
- How does the AD8337 handle negative-going pulses?
The AD8337 can handle negative-going pulses through its dual-supply operation, which is useful for signals generated by photodiodes or photomultiplier tubes.
- What is the operating temperature range of the AD8337?
The operating temperature range of the AD8337 is −40°C to +85°C.
- Can the AD8337 be configured for different gain settings?
Yes, the AD8337 can be configured for different gain settings using external resistors, and multiple devices can be connected in series for larger gain ranges.
- What is the power dissipation of the AD8337?
The power dissipation of the AD8337 is 185 mW (no signal, VPOS to VNEG = 10 V).
- What is the quiescent current of the AD8337?
The quiescent current of the AD8337 is between 13.5 mA and 25.5 mA for each supply.
