AD8332ACPZ-R7

AD8332ACPZ-R7 is a dual-channel, ultralow noise linear-in-dB, variable gain amplifier (VGA). Optimized for ultrasound systems, it is usable as a low noise variable gain element at frequencies up to 120MHz. Included in each channel are an ultralow noise preamp (LNA), an X-AMP® VGA with 48dB of gain range, and a selectable gain postamp with adjustable output limiting. The LNA gain is 19dB with a single-ended input and differential outputs. Using a single resistor, the LNA input impedance can be adjusted to match a signal source without compromising noise performance. 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. Applications include ultrasound and sonar time-gain controls, high performance automatic gain control (AGC) systems, I/Q signal processing, high speed, dual ADC drivers.

• Active input impedance matching, single 5V supply operation
• Input resistance is 50 ohm typical at (RIZ = 280 ohm, TA = 25°C)
• Input capacitance is 3pF typical at (TA = 25°C)
• 130MHz typ -3dB small signal bandwidth at (VOUT = 0.2V p-p)
• Slew rate is 650V/µs typical at (TA = 25°C)
• Input voltage noise is 0.74nV/√Hz typ at (RS = 0 ohm, HI or LO gain, RIZ = ∞, f = 5MHz)
• Quiescent current per channel is 27.5mA typ at (TA = 25°C)
• Power dissipation per channel is 138mW typical at (TA = 25°C)
• Operating temperature range from -40°C to +85°C
• 32-lead lead frame chip scale package (LFCSP)

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