tda5235 Infineon Technologies Corporation, tda5235 Datasheet - Page 126
tda5235
Manufacturer Part Number
tda5235
Description
Enhanced Sensitivity Double-configuration Receiver With Digital Baseband Processing
Manufacturer
Infineon Technologies Corporation
Datasheet
1.TDA5235.pdf
(259 pages)
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Part Number:
TDA5235
Manufacturer:
INFINEON/英飞凌
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2.7.3
The reference plane for the power level is the input of the receiver board. This means,
the power level at this point (P
attenuation of cables, power combiners etc.).
The specification value of power levels in terms of sensitivity is related to the peak power
of P
Specification value of power levels is related to a Manchester encoded signal with a
Manchester duty cycle of 50% in case of ASK modulation.
An RF signal generator usually displays the level of the unmodulated carrier (P
This has following consequences for the different modulation types:
Table 6
For power levels in sensitivity parameters given as average power, this is noted by the
unit dBm. Peak power can be calculated by adding 3 dB to the average power level in
case of ASK modulation and a Manchester duty cycle of 50%.
2.7.4
Figure 91
Data Sheet
Modulation
scheme
ASK
ASK
FSK
r
in case of On-Off Keying (OOK). This is noted by the unit dBm peak.
Definition of Power Level
Symbols of SFR Registers and Control Bits
CONTROL
CONTROL
Power Level
SFR Symbols
Realization with RF signal
generator
AM 100%
Pulse modulation (=OOK)
FM with deviation
f
f
1
2
= f
= f
carrier
carrier
-
+
r
Δ
) is corrected for all offsets in the signal path (e.g.
Δ
Symbolizes unique SFR registers or SFR control bit(s),
which are common for all configuration sets .
Symbolizes SFR registers or SFR control bit (s) with
Multi-Configuration capability (protocol specific).
In case of SFR register, the name starts with A _ or B_,
depending on the selected configuration. This is
generally noted by the prefix „x _“.
f
f
Δ
f:
126
Power level specification
value
P
P
P
r
r
r
= P
= P
= P
carrier
carrier
carrier
Functional Description
+ 6dB
V1.0, 2010-02-19
TDA5235
carrier
).
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