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SL623

Zarlink Semiconductor Inc
Part Number SL623
Manufacturer Zarlink Semiconductor Inc
Description AM DETECTOR/ AGC AMPLIFIER & SSB DEMODULATOR
Published Apr 16, 2005
Detailed Description THIS DOCUMENT IS FOR MAINTENANCE PURPOSES ONLY AND IS NOT RECOMMENDED FOR NEW DESIGNS SL623 AM DETECTOR, AGC AMPLIFIER ...
Datasheet PDF File SL623 PDF File

SL623
SL623

Overview
THIS DOCUMENT IS FOR MAINTENANCE PURPOSES ONLY AND IS NOT RECOMMENDED FOR NEW DESIGNS 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 CM10 Fig.
1 Pin connections (bottom view) APPLICATIONS s s AM SSB Receivers Test Equipment QUICK REFERENCE DATA s s Supply voltage: 6V Supply current: 30MHz FEATURES s s s Negligible Distortion Easy Interfacing Fast Response Time ODERING INFORMATION SL623 C CM SL623 CB CM Fig.
2 Block diagram SL623 ELECTRICAL CHARACTERISTICS Test conditions (unless otherwise stated) Supply voltage VCC = 6V | Ambient temperature: -30°C to +85°C Test circuit as Fig.
2 ABSOLUTE MAXIMUM RATINGS Supply voltage: 12V Storage temperature: -55°C to +125°C Characteristics Min.
Supply current Input impedance SSB audio output Value Typ.
9 800 30 Max.
11 47 Units mA Ω mVrms Conditions No signal, Pin 4 open Pins 6, 9 Signal input 20mVrms @ 1.
78 MHz.
Ref.
signal input 100mV @ 1.
750MHz Signal input 125mVrms @ 1.
75MHz modulated to 80% at 1KHz...


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