TDA5251 Infineon Technologies, TDA5251 Datasheet - Page 69
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TDA5251
Manufacturer Part Number
TDA5251
Description
TXRX FSK/ASK SGL LP TSSOP-38
Manufacturer
Infineon Technologies
Type
Transceiverr
Specifications of TDA5251
Package / Case
38-TSSOP
Frequency
315MHz
Data Rate - Maximum
64kbps
Modulation Or Protocol
ASK, FSK
Applications
RKE, Remote Control Systems
Power - Output
13dBm
Sensitivity
-109dBm
Voltage - Supply
2.1 V ~ 5.5 V
Current - Receiving
9.3mA
Current - Transmitting
14mA
Data Interface
PCB, Surface Mount
Antenna Connector
PCB, Surface Mount
Operating Temperature
-40°C ~ 85°C
Operating Frequency
0.35 MHz
Operating Supply Voltage
2.5 V, 3.3 V, 5 V
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Operating Temperature (min)
-40C
Operating Temperature (max)
85C
Operating Temperature Classification
Industrial
Product Depth (mm)
4.4mm
Product Length (mm)
9.7mm
Operating Supply Voltage (min)
2.1V
Operating Supply Voltage (max)
5.5V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Memory Size
-
Lead Free Status / Rohs Status
Compliant
Other names
SP000014554
TDA5251
TDA5251INTR
TDA5251XT
TDA5251
TDA5251INTR
TDA5251XT
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
TDA5251
Manufacturer:
INFINEON
Quantity:
276
Default values:
ON= 65215 = 1111111011000000
OFF= 62335 = 1111001110000000
t
t
3.9
The settings for Self Polling Mode depend very much on the timing of the transmitted Signal. To
create an example we consider following data structure transmitted in FSK.
Figure 3-32
According to existing synchronization techniques there are some synchronization bursts in front of
the data added (code violation!). A minimum of 4 Frames is transmitted. Data are preferably
Manchester encoded to get fastest respond out of the Data Rate Detection.
Target Application:
One possible Solution:
t
Data Sheet
ON
OFF
- received Signal has code violation as described before
- total mean current consumption below 1mA
- data reception within max. 400ms after first transmitted frame
ON
~10ms @ f
= 15ms, t
~100ms @ f
Example for Self Polling Mode
OFF
RC
Example for transmitted Data-structure
= 135ms
RC
= 32kHz
= 32kHz
4 Frames
Frame-
details
Sync
b
50ms 50ms
b
Data
Preamble
Syncronisation Preamble
Data
69
Data
400ms
Data
Data
t [ms]
t [ms]
t [ms]
TDA5251 F1
Version 1.1
Application
data_timing011.wmf
2007-02-26