TDA5230 Infineon Technologies, TDA5230 Datasheet - Page 84

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TDA5230

Manufacturer Part Number
TDA5230
Description
IC RECEIVER ASK/FSK 28-TSSOP
Manufacturer
Infineon Technologies
Type
Receiverr
Datasheet

Specifications of TDA5230

Package / Case
28-TSSOP
Frequency
433MHz ~ 450MHz, 865MHz ~ 868MHz
Sensitivity
-111dBm
Data Rate - Maximum
20 kbps
Modulation Or Protocol
ASK, FSK
Applications
RKE, TPM, Security Systems
Current - Receiving
8mA
Data Interface
PCB, Surface Mount
Antenna Connector
PCB, Surface Mount
Voltage - Supply
3 V ~ 3.6 V, 4.5 V ~ 5.5 V
Operating Temperature
-40°C ~ 105°C
Operating Frequency
870 MHz
Operating Supply Voltage
3.3 V, 5 V
Maximum Operating Temperature
+ 105 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
-
Memory Size
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Other names
SP000076520
TDA5230
TDA5230INTR

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The higher the output of ASKNP, the better the reliability of the related data bit. The
signal detector uses this value to distinguish between acceptable data and unacceptable
data (e.g. noise).
Figure 41
The polarity of the Manchester code can be inverted by setting the SFR control bit
DATINV.
Signal and Noise Detector
The Signal and the Noise Detector compare the outputs of ASKNP and FSKNP (see
FSK Demodulator) with configurable thresholds.
The Signal Detection Mode must be configured based on whether ASK or FSK
modulation is used:
Data Sheet
Signal power detection (=Squelch) only (related registers SIGDET0, SIGDET1 and
ASKNP). This mode is generally used for ASK and recommended for FSK.
Noise power detection only (related registers NDTHRES and FSKNP).
Signal and noise power detection simultaneously.
Signal and noise power detection simultaneously, but the FSK noise detect signal is
valid only if the SIGDETLO threshold is exceeded. This is the recommended FSK
mode, if minimum FSK Deviation is not sufficient to use signal power detection only.
limiter
from
MUX
from
f
f
sys
sys
Matched Filter, Signal/Noise Detection and Slicer units
matched
power
meter
noise
FSK
filter
T
nom
/ 16
signal power meter
T
nom
/ 16
signal power
threashold
detector
register
shift
+
enable
delayed
data
80
data
data
threshold
T
nom
/ 16
data slicer
(+1 0 -1)
T
nom
Functional Description
clock recovery
/ 16
Version 4.0, 2007-06-01
slicer
chip data
decoder
recovery
to clock
recovered
framer
clock
TDA523x
to

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