Variable Gain Amplifier Circuits

Automatic gain Control (AGC) Circuits:

Digitally Control Gain over a ±40 DB Range: 09/12/97 EDN-Design Ideas  digitally control an amplifiers gain over a ±40-dB range gain Resolution of1.25 dB.

High Frequency VGhas Digital Control: 07/18/96 EDN-Design Ideas

Low Noise Variable Gain Amplifier

Single IC provides gains of 10 and –10: 08/07/03  EDN-Design Ideas / Real-world data-acquisition systems require amplifying weak signals to match the full-scale input range of an A/D converter. Unfortunately, when you configure them as gain blocks, most common amplifiers have both gain errors and offset drift.

Variable Gain Stage uses Voltage Output DAC: 08/01/97 EDN-Design Ideas

Variable Regulator Output: 0 –28 volts at3 amps.

Video Circuits Collection: Linear Technology Application Note #57 / January1994 /includes Video transmission over UTP

Voltage Controlled Pannier: Variable gain amplifier circuit.