Description
The VCA810 is a DC-coupled, wideband, continuously variable, voltage-controlled gain amplifier. The device provides a differential input to single-ended output conversion with a high-impedance gain control input used to vary the gain over a –40-dB to 40-dB range linear in dB/V.

Features
• High Gain Adjust Range: ±40 dB
• Differential In, Single-Ended Out
• Low Input Noise Voltage: 2.4 nV/√Hz
• Constant Bandwidth vs Gain: 35 MHz
• High dB/V Gain Linearity: ±0.3 dB
• Gain Control Bandwidth: 25 MHz
• Low Output DC Error: < ±40 mV
• High Output Current: ±60 mA
• Low Supply Current: 24.8 mA (Maximum for –40°C to 85°C Temperature Range)

Applications
• Optical Receiver Time Gain Control
• Sonar Systems
• Voltage-Tunable Active Filters
• Log Amplifiers
• Pulse Amplitude Compensation
• AGC receivers With RSSI
• Improved Replacement for VCA610