SL1466
Wideband PLL FM Demodulator
Preliminary Information
DS 3979 2.2 August 1997
OSC –
OSC GND
VCO GAIN SET
VIDEO DRIVE
VIDEO POL SELECT
NC
NC
SL1466
The SL1466 is a wideband PLL FM demodulator, intended
primarily for application in satellite tuners.
The device contains all elements necessary, with the
exception of external local oscillator tank and loop filter
components, to form a complete PLL system operating at 403
or 480MHz.
An AFC system is provided, whose output signals can be
used to correct for any frequency drift at the head end local
oscillator.
GND
DIGF LO
DIGF HI
AFC SET
AFC WINDOW
OSC V CC
OSC +
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
V CC
VIDEO FB+
VIDEO +
VIDEO –
VIDEO FB–
IF V CC
IF IPB
IF IP
IF GND
RF AGC SET
AGC TIME CONSTANT
IF AGC SET
NC
RF AGC CONTROL
FEATURES
s
Single chip PLL system for wideband FM
demodulation
s
Simple low component count application
s
Fully balanced low radiation design
s
High operating input sensitivity
s
2 stage AGC detect for control over internal and
external AGC stages
s
Low distortion video output drive
s
Video polarity invert
s
Digital AFC with window adjust
s
ESD protection (Normal ESD handling procedures
should be observed)
QP28
Fig.1 Pin connections - top view
APPLICATIONS
s
Satellite receiver systems
s
Data communications systems
ORDERING INFORMATION
SL1466/KG/QP1S
PHASE
DETECTOR
27
26
25
24
VIDEO FB+
VIDEO +
VIDEO –
VIDEO FB–
IF IP
IF IPB
21
22
AGC
AMP
AGC
DETECT
ON CHIP
VCO
11
12
VIDEO DRIVE
VIDEO
POLARITY
SELECT
S/H
AFC
NC
16
REF
4
AFC SET
NC
RF AGC CONTROL
28
1
13
15
5
2
3
14
NC
19
RF AGC
SET
18
17
7 8
LO
TANK
10
VCO
GAIN SET
AGC TIME IF
CONST
AGC
SET
AFC WINDOW
DIGF LO
DIGF HI
Vcc GND
Fig. 2 Block diagram
MITEL [ MITEL NETWORKS CORPORATION ]
