The AD8337 is a low noise, single-ended, linear-in-dB, general-purpose variable gain amplifier (VGA) usable at frequencies from dc to 100 MHz. The AD8337 ideal for gain trim applications and for driving high speed analog-to-digital converters (ADCs).
The AD8337 uses the popular and versatile X-AMP® architecture, exclusively from Analog Devices, Inc., with a gain range of 24 dB. The gain control interface provides precise linear-in-dB scaling of 19.7 dB/V, referenced to VCOM.
The AD8337 includes an uncommitted operational current-feedback preamplifier (PrA) that operates in inverting or noninverting configurations. Using external resistors, the device can be configured for gains of 6 dB or greater. The AD8337 is characterized by a noninverting PrA gain of 2× using two external 100 ohm resistors.
- Low noise
- DC-coupled
- Single-ended input and output
- High speed uncommitted op amp input
- Applications:
- Gain trim
- PET scanners
- High performance AGC systems
- I/Q signal processing
- Video
- Industrial and medical ultrasound
- Radar receivers
