VCA810ID

The VCA810ID is a Wideband Voltage-controlled Amplifier that provides a differential input to single-ended output conversion with a high-impedance gain control input used to vary the gain over a -40 to +40dB range linear in dB/V. Operating from ±5V supplies, the gain control voltage for the VCA810 will adjust the gain from -40dB at 0V input to +40dB at -2V input. Increasing the control voltage above ground will attenuate the signal path to greater than 80dB. Signal bandwidth and slew rate remain constant over the entire gain adjust range. This 40dB/V gain control is accurate within ±1.5dB (±0.9dB for high grade), allowing the gain control voltage in an AGC application to be used as a Received Signal Strength Indicator (RSSI) with ±1.5dB accuracy. Excellent common-mode rejection and common-mode input range at the two high-impedance inputs allow the VCA810 to provide a differential receiver operation with gain adjust.

• High gain adjust range (±40dB)
• Differential in/single-ended out
• Low input noise voltage (2.4nV/√Hz)
• Constant bandwidth vs. gain
• High dB/V gain linearity (±0.3dB)
• Gain control bandwidth (25MHz)
• Low output DC error (<lt/>±40mV)
• High output current (±60mA)
• Low supply current (24.8mA)
• Green product and no Sb/Br

Applications

Signal Processing

Warnings

IC can be damaged by ESD. We recommend that all ICs be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.