SL623

AM DETECTOR, AGC AMPLIFIER & SSB DEMODULATOR

The SL623C is a silicon integrated circuit combining the

functions of low level, low distortion AM detector and AGC

generator with SSB demodulator It is designed specially for

use in SSB/AM receivers in conjunction with SL610C, SL611C

and SL612C RF and IF amplifiers. It is complementary to the

SL621C SSB AGC generator.

The AGC voltage is generated directly from the detected

carrier signal and is independent of the depth of modulation

used Its response is fast enough to follow the most rapidly

fading signals When used in a receiver comprising one

SL610C and one SL61 2C amplifier, the SL623C will maintain

the output within a 5dB range for a 90dB range of receiver input

signal.

The AM detector, which will work with a carrier level down

to 100mV, contributes negligible distortion up to 90%

modulation. The SSB demodulator is of single balanced form.

The SL623C is designed to operate at intermediate

frequencies up to 30MHz.

In addition it functions at

frequencies up to 120MHz with some deg radation in detection

efficiencies

FEATURES

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Negligible Distortion

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Easy Interfacing

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Fast Response Time

CM10

Fig.1 Pin connections (bottom view)

APPLICATIONS

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AM SSB Receivers

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Test Equipment

QUICK REFERENCE DATA

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Supply voltage: 6V

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Supply current: 30MHz

ODERING INFORMATION

SL623 C CM

SL623 CB CM

Fig.2 Block diagram