MC1490 - WIDEBAND AMPLIFIER WITH AGC

Product Overview

Motorola

Part number	MC1490
Manufacturer	Motorola
File Size	364.33 KB
Description	WIDEBAND AMPLIFIER WITH AGC
Datasheet	MC1490 Datasheet
Additional preview pages of the MC1490 datasheet.

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.

re 24. Speech Compressor +12 V 25 µF 0.001 1.0 k 1.0 k 2 5 15 µF Input 4 6 15 µF R3 15 k 7 1 MC1490P 3 +12 V +12 V 8 10 µF 10 µF Output +12 V R2 Q2 2N3904 4.7 k 150 k Cx Rx 220 Q1 2N3906 D1 6.8 k 2.2 k Vr 33 k R1 100 k.

Other Datasheets by Motorola

MC1494L - (MC1494L / MC1594L) MONOLITHIC FOUR-QUADRANT MULTIPLIER
MC1495 - (MC1495 / MC1595) 30VDC 10mA 862mW wideband linear four-quadrant multiplier
MC1496 - BALANCED MODULATORS/DEMODULATORS
MC1496B - BALANCED MODULATORS/DEMODULATORS
MC1400 - (MC1500 / MC1400) Laser Trimmed Silicon Monolithic Integrated Circuit
MC14000UB - Dual 3-Input NOR Gate Plus Inverter
MC14001B - B-Suffix Series CMOS Gates
MC14001UB - Dual 3-Input NOR Gate Plus Inverter

Published: Jun 15, 2005 |