ML1490 RF/IF/Audio Amplifier Wideband Amplifier

ML1490 RF/IF/Audio Amplifier Wideband Amplifier

OF SPEECH COMPRESSOR The amplifier drives the base of a PNP transistor operating common–emitter with a voltage gain of approximately 20. The control R1 varies the quiescent Q point of this transistor so that varying amounts of signal exceed the level Vr. Diode D1 rectifies the positive peaks of Q1's.

Features

) product, as it becomes available, will be identified by a part number prefix change from ML to MLE. PIN CONNECTIONS 7 Substrate Ground 6 5 Noninverting Input AGC Input Representative Schematic Diagram 2 1.5 k VAGC 5 470 2.0 k 470 70 5.5 k 12.1 k 8 (+) Outputs (
  –) 1 45 66 6 5.0 k 5.0 k 5.6 k 1.1 k 1.1 k 8.4 k Substrate 1.9k 200 3 7 1.4 k 2.8 k 200 200 2.8 k VCC Inverting Input SCATTERING PARAMETERS (VCC = +12 Vdc, TA = +25°C, Zo = 50 Ω) f = MHz Typ Parameter Input Reflection Coefficient Output Reflection Coefficient Forward Transmission Coefficient Reverse Transmission Coefficient Symbol.