Datasheet Details
| Part number | ML1490 |
|---|---|
| Manufacturer | LANSDALE Semiconductor |
| File Size | 576.21 KB |
| Description | RF/IF/Audio Amplifier Wideband Amplifier |
| Datasheet |
 ML1490 Datasheet
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General Description
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.
Key Features
- The emitter.
- follower Q2 drives the AGC Pin 5 of the ML1490PP and reduces the gain. R3 controls the slope of signal compression. Table 1. Distortion versus Frequency Frequency 100 Hz 300 Hz 1.0 kHz 10 kHz 100 kHz Distortion 10 mV ei 3.5% 2% 1.5% 1.5% 1.5% 100 mV ei 12% 10% 8% 8% 8% Distortion 10 mV ei 15% 6% 3% 1% 1% 100 mV ei 27% 20% 9% 3% 3% Note.