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Obsolescence Notice
This product is obsolete. This information is available for your convenience only. For more information on Zarlink's obsolete products and replacement product lists, please visit
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THIS DOCUMENT IS FOR MAINTENANCE PURPOSES ONLY AND IS NOT RECOMMENDED FOR NEW DESIGNS
ADVANCE INFORMATION
DS3630 - 1.1
SL610, SL611 & SL612
RF/IF AMPLIFIER
The SL610C, SL611C and SL612C are RF voltage amplifier with AGC facilities. The voltage gain is 10, 20 and 50 times respectively and the upper frequency response varies from 15MHz to 120MHz according to type .
FEATURES
Wide AGC Range: 50dB Easy Interfacing Integral Power Supply RF Decoupling CM8
Fig.1 Pin connections (top view)
APPLICATIONS
RF Amplifiers IF Amplifiers
ABSOLUTE MAXIMUM RATINGS
Supply voltage: Storage temperature: Operating temperature range Chip-to-ambient Chip-to-case 12V -65C to +150C -30C to +85C 225C/W 65C/W
QUICK REFERENCE DATA
Supply Voltage: 6V Voltage Gain: 20dB to 34dB
ORDERING INFORMATION
SL610/1/2 C CM SL610 NA 1C SL612 NA 1C
VCC
AGC 7 2
INPUT
5 3 OUTPUT
6 INPUT BIAS 4 8
Fig.2 Block diagram
Fig.3 Input admittance with o/c output (G11)
SL610/611 & 612
ELECTRICAL CHARACTERISTICS
These characteristics are guaranteed over the following conditions (unless otherwise stated) Supply voltage VCC: 6V Ambient temperature: 22C 2C Test frequency: SL610C 30MHz SL611C 30MHz SL612C 1.75MHz Value Characteristics Supply current Circuit SL610C SL611C SL612C SL610C SL611C SL612C SL610C SL611C SL612C Min. Typ. 15 15 3.3 20 26 34 120 80 15 1.0 Max. 20 20 5 22 28 36 Units mA mA mA dB dB dB MHz MHz MHz V rms Conditions
No signal, Pin 3 open circuit RS = 50 RL = 22C Tamb = 22C
Voltage gain
Cut-off frequency (-3dB)
18 24 32 85 50 10
Max. output signal (max. AGC) Max.input signal (max. AGC) AGC range SL610C SL611C SL612C AGC current 40 40 60
RL = 150 (SL610C/611C) RL = 1.2k (SL612C)
250 50 50 70 0.15
0.6
mV rms dB dB dB mA
Pin 7 0V to 5.1V Current into pin 7 at 5.1V
APPLICATION NOTES
Input circuit The SL610C, SL611C and SL612C are normally used with pins 5 and 6 connected together and with the input connected via a capacitor as shown in Fig.2. The input impedance is negative between 30MHz and 100MHz (SL610C, SL611C only) and is shown in Fig.3. The source and inductive is should be shunted by a 1k resistor to prevent oscillation. An alternative circuit with improved noise figure is shown in Fig.4.
AGC When pin 7 is open circuit or connected to a voltage less than 2V the voltage gain is normal. As the AGC voltage is increased there is a reduction in gain as shown in Fig.6. This reduction varies with temperature.
5 3 6 4 8
Fig.4 Alternative input circuit
Output circuit The output stage is an emitter follower and has a negative output impedance at certain frequencies as shown in Fig.5. To prevent oscillation when the load is capacitive a 47 resistor should be conncted in series with the output.
Fig.5 Typical output impedance with s/c input (G22)
SL610/611 & 612
Typical applications The circuit of Fig.7 is a general purpose RF preamplifier. The voltage gain (from pin 5 to pin 3) is shown in Fig.8. Fig.9 is the IF section of a simple SSB transceiver. At 9MHz it has a gain of 100dB.
+6V
0.1 RI 47 OUTPUT 0.01
5 6
2 3 8 7 4
INPUT
0.01
Fig.6 AGC characteristics (typical)
Fig.7 RF preamplifier
Fig.8 Typical voltage gain (RS = 50)
Fig.9 IF amplifier using SL1612
SL610/611 & 612
HEADQUARTERS OPERATIONS GEC PLESSEY SEMICONDUCTORS Cheney Manor, Swindon, Wiltshire SN2 2QW, United Kingdom. Tel: (0793) 518000 Fax: (0793) 518411 GEC PLESSEY SEMICONDUCTORS P.O. Box 660017 1500 Green Hills Road, Scotts Valley, California 95067-0017, United States of America. Tel: (408) 438 2900 Fax: (408) 438 5576
CUSTOMER SERVICE CENTRES * FRANCE & BENELUX Les Ulis Cedex Tel: (1) 64 46 23 45 Tx: 602858F Fax : (1) 64 46 06 07 * GERMANY Munich Tel: (089) 3609 06-0 Tx: 523980 Fax : (089) 3609 06-55 * ITALY Milan Tel: (02) 66040867 Fax: (02) 66040993 * JAPAN Tokyo Tel: (03) 3296-0281 Fax: (03) 3296-0228 * NORTH AMERICA Integrated Circuits and Microwave Products Scotts Valley, USA Tel (408) 438 2900 Fax: (408) 438 7023. Hybrid Products, Farmingdale, USA Tel (516) 293 8686 Fax: (516) 293 0061. * SOUTH EAST ASIA Singapore Tel: (65) 3827708 Fax: (65) 3828872 * SWEDEN Stockholm, Tel: 46 8 702 97 70 Fax: 46 8 640 47 36 * UNITED KINGDOM & SCANDINAVIA Swindon Tel: (0793) 518510 Tx: 444410 Fax : (0793) 518582 These are supported by Agents and Distributors in major countries world-wide. (c) GEC Plessey Semiconductors 1993 Publication No. DS3630 Issue No. 1.1 June 1993
This publication is issued to provide information only which (unless agreed by the Company in writing) may not be used, applied or reproduced for any purpose nor form part of any order or contract nor to be regarded as a representation relating to the products or services concerned. No warranty or guarantee express or implied is made regarding the capability, performance or suitability of any product or service. The Company reserves the right to alter without prior knowledge the specification, design or price of any product or service. Information concerning possible methods of use is provided as a guide only and does not constitute any guarantee that such methods of use will be satisfactory in a specific piece of equipment. It is the user's responsibility to fully determine the performance and suitability of any equipment using such information and to ensure that any publication or data used is up to date and has not been superseded. These products are not suitable for use in any medical products whose failure to perform may result in significant injury or death to the user. All products and materials are sold and services provided subject to the Company's conditions of sale, which are available on request.
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