ATA5744N-TKQY 19 Atmel, ATA5744N-TKQY 19 Datasheet - Page 11
![RF Receiver RF DATA CONTROL RECEIVER](/photos/30/99/309924/sso20_sml.jpg)
ATA5744N-TKQY 19
Manufacturer Part Number
ATA5744N-TKQY 19
Description
RF Receiver RF DATA CONTROL RECEIVER
Manufacturer
Atmel
Type
Receiverr
Datasheet
1.ATA5744N-TKQY.pdf
(20 pages)
Specifications of ATA5744N-TKQY 19
Package / Case
SSO-20
Operating Frequency
449 MHz
Operating Supply Voltage
4.5 V to 5.5 V
Maximum Operating Temperature
+ 105 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Noise Figure
7 dB
Operating Frequency (max)
450000kHz
Operating Temperature (min)
-40C
Operating Temperature (max)
105C
Operating Temperature Classification
Industrial
Product Depth (mm)
4.4mm
Operating Supply Voltage (min)
4.5V
Operating Supply Voltage (typ)
5V
Operating Supply Voltage (max)
5.5V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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
.