T5744N-TGQ Atmel, T5744N-TGQ Datasheet - Page 11

• Manufacturer Part Number: T5744N-TGQ
• Description: IC RCVR PLL ASK 450MHZ 20-SOIC
• Manufacturer: Atmel

Specifications of T5744N-TGQ

• Frequency: 300MHz ~ 450MHz
• Sensitivity: -108dBm
• Modulation Or Protocol: ASK
• Applications: General Purpose Data Transmission Systems
• Current - Receiving: 30mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 20-SOIC (0.300", 7.50mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Features: -
• Memory Size: -
• Data Rate - Maximum: -
• Other names: T5744N-TGQTR

6. Digital Signal Processing
Figure 6-1.
Figure 6-2.
4521C–RKE–05/05
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
T5744
T
DATA_min
11
.