ATA5744N-TKSY Atmel, ATA5744N-TKSY Datasheet - Page 11

IC RCVR UHF ASK 433MHZ 20SSOP

ATA5744N-TKSY

Manufacturer Part Number
ATA5744N-TKSY
Description
IC RCVR UHF ASK 433MHZ 20SSOP
Manufacturer
Atmel
Datasheet

Specifications of ATA5744N-TKSY

Frequency
300MHz ~ 450MHz
Sensitivity
-112dBm
Data Rate - Maximum
10 kBaud
Modulation Or Protocol
ASK, FSK
Applications
RKE, Telemetering, Security Technology
Current - Receiving
7.1mA
Data Interface
PCB, Surface Mount
Antenna Connector
PCB, Surface Mount
Features
RSSI Equipped
Voltage - Supply
4.5 V ~ 5.5 V
Operating Temperature
-40°C ~ 105°C
Package / Case
20-SOIC (0.200", 5.30mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Memory Size
-
6. Digital Signal Processing
Figure 6-1.
Figure 6-2.
4893A–RKE–11/05
Dem_out
DATA
Dem_out
Data_out (DATA)
Synchronization of the Demodulator Output
Debouncing of the Demodulator Output
The data from the ASK demodulator (Dem_out) is digitally processed in different ways and as a
result converted into the output signal DATA. This processing depends on the selected baudrate
range (BR_Range).
extended basic clock cycle T
edge-to-edge time period tee_sig of the DATA signal as a result is always an integral multiple of
T
The minimum time period between two edges of the data signal is limited to tee_sig
This implies an efficient suppression of spikes at the DATA output. At the same time it limits the
maximum frequency of edges at DATA. This eases the interrupt handling of a connected
microcontroller.
XClk
T
t
DATA_min
.
XClk
t
ee
Figure 6-1 on page 11
t
ee_sig
XClk
t
DATA_min
. Data can change its state only after T
t
ee
illustrates how Dem_out is synchronized by the
t
DATA_min
XClk
t
ee
has elapsed. The
ATA5744
T
DATA_min
11
.

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