SL1461KG MITEL [Mitel Networks Corporation], SL1461KG Datasheet

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SL1461KG

Manufacturer Part Number
SL1461KG
Description
Wideband PLL FM Demodulator
Manufacturer
MITEL [Mitel Networks Corporation]
Datasheet
intended primarily for application in satellite tuners.
exception of external oscillator sustaining network and loop
feedback components, to form a complete PLL system
operating at frequencies up to 800MHz.
signal can be used to correct for any frequency drift at the head
end local oscillator.
FEATURES
The SL1461SA is a wideband PLL FM demodulator,
Single chip PLL system for wideband FM
Simple low component count application
Allows for application of threshold extension
Fully balanced low radiation design
High operating input sensivity
Improved VCO stability with variations in supply or
AGC detect and bias adjust
75 video output drive with low distortion levels
Dynamic self biasing analog AFC
Full ESD Protection*
* Normal ESD handling procedures should be observed
demodulation
temperature
The device contains all elements necessary, with the
An AFC with window adjust is provided, whose output
AFC WINDOW
AGC OUTPUT
OSCILLATOR
RF INPUTS
AGC BIAS
ADJUST
LOCAL
6
8
9
7
4
5
2
Fig.2 SL1461SA block diagram
APPLICATIONS
ORDERING INFORMATION
SL1461SA/KG/MPAS
Satellite receiver systems
Data communications Systems
AFC WINDOW ADJUST
Wideband PLL FM Demodulator
OSCILLATOR +
OSCILLATOR –
AGC OUTPUT
AFC PUMP
AGC BIAS
Fig.1 Pin connections - top view
RF INPUT
V
EE
2
3
4
5
6
7
8
1
Advance Information
14
12
13
11
10
16
1
DS4049 - 1.2 December 1994
16
16
15
14
13
12
11
10
9
VIDEO
OUTPUT
VIDEO
FEEDBACK +
VIDEO +
VIDEO –
VIDEO
FEEDBACK –
AFC PUMP
AFC OUTPUT
SL1461SA
AFC OUTPUT
VIDEO FEEDBACK +
VIDEO FEEDBACK –
VIDEO OUTPUT
RF INPUT
V
VIDEO –
VIDEO +
CC
MP16

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SL1461KG Summary of contents

Page 1

The SL1461SA is a wideband PLL FM demodulator, intended primarily for application in satellite tuners. The device contains all elements necessary, with the exception of external oscillator sustaining network and loop feedback components, to form a complete PLL system operating ...

Page 2

SL1461SA ELECTRICAL CHARACTERISTICS +4.5V to +5.5V. The electrical characteristics are guaranteed by either production test or design. amb CC They apply within the specified ambient temperature and supply voltage unless otherwise ...

Page 3

TEST CONFIGURATION VIDEO GENERATOR ROHDE & SCHWARZ SGPF DE EMPHASISED BASE BAND VIDEO 1V p–p The video drive characteristics measurements were made using the above test configuration. The maximum figures recorded in the Electrical Characteristics Table coincide with high temperatures ...

Page 4

SL1461SA ABSOLUTE MAXIMUM RATINGS All voltages are referred Characteristics MP16 package thermal resistance, chip to case Power consumption at 5.5V ESD protection - pins ESD protection - Pin 16 AGC BIAS 2K ...

Page 5

DESIGN OF PLL LOOP PARAMETERS RF INPUT The SL1461SA is normally used as a type 1 second order loop and can be represented by the above diagram. For such a system the following parameters apply and K K ...

Page 6

SL1461SA BASEBAND VIDEO 6 WINDOW ADJUST ALIGN V LO FREQ – + – Fig.5 AFC system block diagram EXT C EXT V AFC ...

Page 7

REF; 2.7V AGC OUTPUT AGC output V REF; 3V 2x1500 RF INPUTS RF inputs V CC AFC PUMP 10K AFC OUTPUT AFC output stage Fig.6 SL1461SA I/O port internal circuitry SL1461SA AGC BIAS V REF; 2V AGC ...

Page 8

SL1461SA FROM PHASE DETECTOR 2x570 VIDEO FEEDBACK + VIDEO FEEDBACK – Video amp feedback inputs 8 V REF; 1. OSCILLATOR + OSCILLATOR – Local oscillator Fig.6a SL1461SA I/O port internal circuitry FREQ MHz 520 500 480 460 ...

Page 9

Fig.8 SL1461SA VCO centre frequency uncompensated temperature stability 2.0 1.5 AGC OUTPUT 1.0 VOLTAGE 0.5 –70 Fig.9 SL1461SA AGC output voltage for differing values of AGC bias resistor APPLICATION NOTES ...

Page 10

SL1461SA Lock range Lock range should be symmetric about the centre of the S-curve. When the oscillator is sitting in the centre of the S-curve, the two video outputs will be at the same DC voltage. RF oscillator design The ...

Page 11

Fig.10 Layout of demo board with component locations SL1461SA 11 ...

Page 12

SL1461SA PACKAGE DETAILS Dimensions are shown thus: mm (in). 9·80/10·01 (0·386/0·394) 16 SPOT REF. CHAMFER REF. PIN 1 0·33/0·51 (0·013/0·020) 0·69 (0·027) MAX 16 LEADS AT 1·27 (0·050) NOM SPACING 16-LEAD MINIATURE PLASTIC DIL - MP16 CUSTOMER SERVICE CENTRES FRANCE ...

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