SL6619
Direct Conversion FSK Data Receiver
Preliminary Information
Supersedes July 1996 version, DS3853 - 3.5
DS3853 - 4.1 April 1998
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.
32 31 30 29 28 27 26 25
FEATURES
s
Very Low Power Operation from Single Cell
s
Superior Sensitivity
s
Operation at 512, 1200 and 2400 Baud
s
On Chip 1 Volt Regulator
s
1mm Height Miniature Package
s
Automatic Frequency Control Function
s
Programmable Post Detection Filter
s
AGC Detection Circuitry
s
Power Down Function
s
Battery Strength Indicator
APPLICATIONS
s
Pagers, including Credit Card, PCMCIA and
Watch Pagers
s
Low Data Rate Receivers, e.g. Security Systems
ORDERING INFORMATION
SL6619/KG/TP1N
SL6619/KG/TP1Q
1mm TQFP device, baked and dry
packed, supplied in trays
1mm TQFP device, baked and dry
packed, supplied in tape and reel
IRF
GND
MIXIP A
MIX DEC
MIXIP B
REG CNT
VREG
TPI
GTH ADJ
TC ADJ
IAGC OP
TP LIM I
VBATT
BRF1
BRF CNT
AFC2
1
2
3
4
5
6
7
8
SL6619
24
23
22
21
20
19
18
17
AFC1
BATT FLAG
VCC2
DATA OP
BEC
AFC OP
VREF
TPQ
9 10 11 12 13 14 15 16
I1
I2
VCC1
LOIP I
GYR I
LOIP Q
Q1
Q2
TP32
Fig. 1 Pin identification diagram (top view). See Table 1 for
pin descriptions
ABSOLUTE MAXIMUM RATINGS
Storage temperature
255°C
to1150°C
Operating temperature
210°C
to155°C
Maximum voltage on any pin w.r.t. any
14V
other pin, subject to the following conditions:
Current, pin 3 (MIXIP), pin 5 (MIXPB),
<5ma
pin 12 (LOIPI) and pin 14 (LOIPB)
Most negative voltage on any pin
20·5V
w.r.t. gnd
12
9 10 13
7
6 8
29
4
20
11
22
2
18
−
1·0V
+
MIX
DEC
BEC VCC1 VCC2 GND VREF
3
26
27
MIXER
LIMITER
4
f
DETECTOR
LIMITER
21
5
1·08V
31
−
+
AFC
23 17
1
32
24 25
30
19
14
15 16 28
Fig. 2 Block diagram of SL6619
MITEL [ MITEL NETWORKS CORPORATION ]
