
SL6619
Direct Conversion FSK Data Receiver
Data Sheet
August 2005
The SL6619 is an advanced Direct Conversion FSK Data
Receiver for operation up to 450 MHz. The device integrates all
functions to convert a binary FSK modulated RF signal into a
demodulated data stream.
Adjacent channel rejection is provided using tuneable gyrator
filters. RF and audio AGC functions assist operation when large
interfering signals are present and an automatic frequency control
(AFC) function is provided to extend centre frequency acceptance.
Features
Very Low Power Operation from Single Cell
Superior Sensitivity
Operation at 512, 1200 and 2400 Baud
On Chip 1 Volt Regulator
1mm Height Miniature Package
Automatic Frequency Control Function
Programmable Post Detection Filter
AGC Detection Circuitry
Power Down Function
Battery Strength Indicator
Applications
Pagers, including Credit Card, PCMCIA and
Watch Pagers
Low Data Rate Receivers, e.g. Security Systems
Figure 1 Pin identification diagram (top view). See Table 1
for pin descriptions
1
2
3
4
5
6
7
8
IRF
GND
MIXIP A
MIX DEC
MIXIP B
REG CNT
VREG
TPI
9 10 11 12 13 14 15 16
32 31 30 29 28 27 26 25
24
23
22
21
20
19
18
17
AFC1
BATT FLAG
VCC2
DATA OP
BEC
AFC OP
VREF
TPQ
I
I
V
L
G
L
Q
Q
G
T
I
T
V
B
B
A
TP32
SL6619
ABSOLUTE MAXIMUM RATINGS
Storage temperature
Operating temperature
Maximum voltage on any pin w.r.t. any
other pin, subject to the following conditions:
Current, pin 3 (MIXIP), pin 5 (MIXPB),
pin 12 (LOIPI) and pin 14 (LOIPB)
Most negative voltage on any pin
2
55
°
C to
1
150
°
C
2
10
°
C to
1
55
°
C
1
4V
<5ma
2
0·5V w.r.t. gnd
+
+
1·0V
1·08V
4
f
DETECTOR
MIXER
LIMITER
AFC
LIMITER
MIX
DEC
BEC VCC1 VCC2 GND REF
3
5
12
9 10 13
7
6 8
29
4
20
11
22
2
18
26
27
21
31
30
19
14
15 16 28
23 17
1
32
24 25
Figure 2 - Block diagram of SL6619
Zarlink Semiconductor Inc.
Zarlink, ZL and the Zarlink Semiconductor logo are trademarks of Zarlink Semiconductor Inc.
Copyright 1998 - 200
5
, Zarlink Semiconductor Inc. All Rights Reserved.
Ordering Information
32 Pin TQFP
32 Pin TQFP
32 Pin TQFP*
32 Pin TQFP*
SL6619/KG/TP1N
SL6619/KG/TP1Q
SL6619/KG/TP2Q
SL6619/KG/TP2N
Trays
Tape & Reel
Tape & Reel
Trays
*Pb Free Matte Tin