宽带， 40分贝调整范围， dB线性可变增益放大器 Wideband, 40dB Adjust Range, Linear in dB VARIABLE GAIN AMPLIFIER
DESCRIPON
The VCA820 is a dc-coupled, wideband, linear in dB, continuously variable, voltage-controlled gain
amplifier. It provides a differential input to single-ended conversion with a high-impedance gain
control input used to vary the gain down 40dB from the nominal maximum gain set by the gain resistor RG and feedback resistor RF.
FEATURES
• 150MHz SMALL-SIGNAL BANDWIDTH
• 137MHz, 5VPP BANDWIDTH G = +10V/V
• 0.1dB GAIN FLATNESS to 28MHz
• 1700V/μs SLEW RATE
• > 40dB GAIN ADJUST RANGE
• HIGH GAIN ACCURACY: 20dB ±0.4dB
• HIGH OUTPUT CURRENT: 160mA
APPLICATIONS
• AGC RECEIVERS with RSSI
• DIFFERENTIAL LINE RECEIVERS
• PULSE AMPLITUDE COMPENSATION
• VARIABLE ATTENUATORS
• DROP-IN UPGRADE TO LMH6502