Overview
The AD8337BCPZ-REEL, 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 noted for its excellent bandwidth uniformity across the entire gain range and low output-referred noise, making it ideal for gain trim applications and for driving high speed analog-to-digital converters (ADCs). The AD8337 uses the exclusive X-AMP® architecture from Analog Devices, with a gain range of 24 dB and a gain control interface that provides precise linear-in-dB scaling of 19.7 dB/V, referenced to VCOM. The device is suitable for various applications requiring high speed and low noise, such as industrial ultrasound, PET scanners, and video applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage | +5 V, ±2.5 V, or ±5 V | V |
| Operating Temperature Range | −40°C to +85°C | °C |
| Package Type | 8-Lead LFCSP (3mm x 3mm w/ EP) | |
| Pin Count | 8 | |
| Gain Range | 0 dB to 24 dB | dB |
| Bandwidth | 280 MHz (−3 dB bandwidth) | MHz |
| Power Dissipation | 185 mW (no signal, VPOS to VNEG = 10 V) | mW |
| Quiescent Current | 13.5 to 25.5 mA (each supply) | mA |
| Harmonic Distortion (HD2, HD3) | −85 dBc to −75 dBc (depending on frequency) | dBc |
Key Features
- Low noise and high speed operation, suitable for frequencies up to 100 MHz.
- Linear-in-dB gain control with a gain range of 24 dB and scaling of 19.7 dB/V.
- DC-coupled single-ended input and output.
- Dual-supply operation, enabling gain control of negative-going pulses.
- Uncommitted operational current-feedback preamplifier (PrA) configurable for gains of 6 dB or greater.
- Excellent bandwidth uniformity and low output-referred noise.
- Compact 8-lead LFCSP package (3mm x 3mm w/ EP).
Applications
- Gain trim applications.
- High performance AGC (Automatic Gain Control) systems.
- I/Q signal processing.
- Video applications.
- Industrial and medical ultrasound.
- PET scanners.
- Radar receivers).
Q & A
- What is the AD8337BCPZ-REEL used for?
The AD8337BCPZ-REEL is a variable gain amplifier (VGA) used in applications requiring low noise and high speed, such as gain trim, AGC systems, I/Q signal processing, video, industrial and medical ultrasound, PET scanners, and radar receivers.
- What is the gain range of the AD8337?
The AD8337 has a gain range of 0 dB to 24 dB, with a scaling of 19.7 dB/V referenced to VCOM.
- What are the supply voltage options for the AD8337?
The AD8337 can operate with supply voltages of +5 V, ±2.5 V, or ±5 V).
- What is the bandwidth of the AD8337?
The AD8337 has a −3 dB bandwidth of 280 MHz).
- What package type is the AD8337BCPZ-REEL available in?
The AD8337BCPZ-REEL is available in an 8-lead LFCSP package (3mm x 3mm w/ EP)).
- What are the key features of the AD8337's gain control?
The AD8337 features linear-in-dB gain control with a gain range of 24 dB and scaling of 19.7 dB/V, referenced to VCOM. It also includes an uncommitted operational current-feedback preamplifier (PrA) configurable for gains of 6 dB or greater).
- How does the AD8337 perform in terms of noise and distortion?
The AD8337 is characterized by low output-referred noise and excellent harmonic distortion performance, with HD2 and HD3 values ranging from −85 dBc to −75 dBc depending on the frequency).
- Can the AD8337 be used in dual-supply configurations?
Yes, the AD8337 supports dual-supply operation, enabling gain control of negative-going pulses such as those 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).
- How much power does the AD8337 consume?
The AD8337 consumes approximately 185 mW of power when no signal is applied and VPOS to VNEG is 10 V).
