JULY 1995
ADVANCE INFORMATION
DS4015 - 2.5
SL6609A
DIRECT CONVERSION FSK DATA RECEIVER
This device is an advanced direct conversion receiver for
operation up to 470MHz. The design is based on the SL6609
receiver and is a pin for pin product upgrade. The device
integrates all functions to translate a binary FSK modulated
RF signal into a demodulated data stream. Adjacent channel
rejection is provided using tuneable gyrator filters. To assist
operation in the presence of large interfering signals both RF
and audio AGC functions are provided.
TPX
1
2
28
27
IAGCOUT
IRFAMP
RFIADJ
LOY
GYRI
3
4
26
25
24
23
22
21
20
MIXA
GND
LOX
5
MIXB
VR
6
VREG
REGCNT
VCC1
VBATT
TPY
7
The device also includes a 1 volt regulator capable of
sourcing up to 5mA, a battery flag and the facility of incorporating
a more complex post detection filter off-chip. Both battery flag
and data outputs have open collector outputs to ease their
interface with other devices.
GTHADJ
TCADJ
8
9
BEC
10
11
12
13
14
19
18
VBG
BATTFL
DIGGND
TPLIMY
VCC2
17
16
15
BRF1
FEATURES
BRF2
■
■
Very low power operation - typ 3.0mW
Single cell operation for most of the device.
Limited functional blocks operating via an inverter
Superior sensitivity of -130dBm
Operation at wide range of paging data rates
512, 1200, 2400 baud
DATAOP
TPLIMX
■
■
NP28
Fig.1 Pin connections
■
■
On chip 1 volt regulator
Small package offering SSOP
ABSOLUTE MAXIMUM RATINGS
Supply voltage
6V
Storage temperature
Operating temperature
-55°C to +150°C
-20°C to +70°C
APPLICATIONS
■
■
■
■
Credit card pagers
Watch pagers
Small form factor pagers i.e. PCMCIA
Low data rate data receivers i.e. Security/remote
control
ORDERING INFORMATION
SL6609A / KG / NPDS
SL6609A / KG / NPDE
-
-
SSOP devices in anti-static sticks
SSOP devices in tape and reel
Fig.2 Block diagram of SL6609A
ZARLINK [ ZARLINK SEMICONDUCTOR INC ]
