AD8331ARQZ-R7

AD8331 is a single channel, ultralow noise linear-in-dB, variable gain amplifier (VGA). The 48dB gain range of the VGA makes this device suitable for a variety of applications. Excellent bandwidth uniformity is maintained across the entire range. The gain control interface provides precise linear-in-dB scaling of 50dB/V for control voltages between 40mV and 1V. Factory trim ensures excellent part-to-part and channel-to-channel gain matching. Differential signal paths result in superb second- and third order distortion performance and low crosstalk. It is widely used in application such as ultrasound and sonar time-gain controls, high performance automatic gain control (AGC) systems, I/Q signal processing, high speed, dual ADC drivers etc.

• Voltage noise is 0.74nV/√Hz, slew rate is 650V/µs
• Current noise is 2.5pA/√Hz
• 3dB bandwidth is 120MHz
• Low power is 125mW/channel
• Wide gain range with programmable postamp
• −4.5dB to +43.5dB in LO gain mode, 7.5dB to 55.5dB in HI gain mode
• Low output-referred noise is 48nV/√Hz typ, single 5V supply operation
• Active input impedance matching, selectable output clamping level
• Operating temperature is –40°C to +85°C, optimized for 10-bit/12-bit ADCs
• Packaging style is 20-lead shrink small outline package (QSOP)

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party