tda5251f1 Infineon Technologies Corporation, tda5251f1 Datasheet - Page 70
tda5251f1
Manufacturer Part Number
tda5251f1
Description
Ask/fsk 315mhz Wireless Transceiver
Manufacturer
Infineon Technologies Corporation
Datasheet
1.TDA5251F1.pdf
(88 pages)
- Current page: 70 of 88
- Download datasheet (3Mb)
Confidential
This gives 15ms ON time of a total period of 150ms which results in max. 0.9mA mean current
consumption in Self Polling Mode. The resulting worst case timing is shown in the following figure:
Figure 3-33
Description:
Assumption: the ON time comes right after the first frame (Case A). If OFF time is 135ms the
receiver turns on during Sync-pulses and the PwdDD- pulse wakes up the µP.
If the ON time is in the center of the 50ms gap of transmission (Case B), the Data Detect Logic will
wake up the µP 135ms later.
If ON time is over just before Sync-pulses (Case C), next ON time is during Data transmission and
Data Detect Logic will trigger a PwdDD- pulse to wake up the µP.
Note: In this example it is recommended to use the Peak Detector for slicer threshold generation,
because of its fast attack and slow release characteristic. To overcome the data zero gap of 50ms
larger external capacitors than noted in Section 4.4 at pin12 and 13 are recommended. Further
information on calculating these components can be taken from Section 3.6.2.
3.10
3.10.1
The test setup used for the measurements is shown in the following figure. In case of ASK
modulation the Rohde & Schwarz SMIQ generator, which is a vector signal generator, is connected
to the I/Q modulation source AMIQ. This "baseband signal generator" is in turn controlled by the PC
Preliminary Specification
Sensitivity Measurements
Test Setup
3 possible timings
C a se C :
C a se A :
C a se B :
xxx
xxx
xxx
xxx
xxx
... R e ce ive r e n a b le d
5 0 m s
5 0 m s
5 0 m s
D a ta
D a ta
D a ta
xxx
xxx
xxx
xxx
xxx
1 5 m s
1 5 m s
xx xx
xx xx
xx
1 5 m s
xxx
xxx
xxx
xxx
xxx
1 3 5 m s
D a ta
D a ta
D a ta
1 3 5 m s
1 3 5 m s
70
xxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxx
In te rru p t
d u e P w d D D
µ P e n a b le s R e ce ive r
u n til D a ta co m p le te d
xxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxx
D a ta
D a ta
In te rru p t
d u e P w d D D
D a ta
µ P e n a b le s R e ce ive r
u n til D a ta co m p le te d
xxxxxxxxxxxxxxx
xxxxxxxxxxxxxxx
xxxxxxxxxxxxxxx
xxxxxxxxxxxxxxx
xxxxxxxxxxxxxxx
In te rru p t
d u e P w d D D
µ P e n a b le s R e ce ive r
u n til D a ta co m p le te d
D a ta
D a ta
D a ta
t [m s]
t [m s]
t [m s]
TDA5251 F1
Version 1.0
Application
data_timing021.wmf
2003-02-18
Related parts for tda5251f1
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Antenna Switch Silicon Pin Diode
Manufacturer:
Infineon Technologies Corporation
Datasheet:
Part Number:
Description:
Silicon Switching Diodes
Manufacturer:
Infineon Technologies Corporation
Datasheet:
Part Number:
Description:
Single Igbt Driver Ic
Manufacturer:
Infineon Technologies Corporation
Datasheet:
Part Number:
Description:
Igbt Modules
Manufacturer:
Infineon Technologies Corporation
Datasheet:
Part Number:
Description:
Igbt Modules
Manufacturer:
Infineon Technologies Corporation
Datasheet:
Part Number:
Description:
Igbt Modules
Manufacturer:
Infineon Technologies Corporation
Datasheet:
Part Number:
Description:
5 Volt Standard Regulator
Manufacturer:
Infineon Technologies Corporation
Datasheet:
Part Number:
Description:
Active Biased Transistor
Manufacturer:
Infineon Technologies Corporation
Datasheet:
Part Number:
Description:
N-channel Small Signal Mosfet 20v?800v
Manufacturer:
Infineon Technologies Corporation
Datasheet:
Part Number:
Description:
Sipmos Small-signal Transistor
Manufacturer:
Infineon Technologies Corporation
Datasheet:
Part Number:
Description:
Complementary Mosfets 60v Small-signal-transistor
Manufacturer:
Infineon Technologies Corporation
Datasheet:
Part Number:
Description:
Complementary Mosfets 60v
Manufacturer:
Infineon Technologies Corporation
Datasheet:
Part Number:
Description:
P-channel Mosfets Power-transistor
Manufacturer:
Infineon Technologies Corporation
Datasheet:
Part Number:
Description:
N-channel Mosfet 20v?300v Power Transistor Power Mosfet
Manufacturer:
Infineon Technologies Corporation
Datasheet:
Part Number:
Description:
Power Mosfets
Manufacturer:
Infineon Technologies Corporation
Datasheet: