TDA5251 Infineon Technologies, TDA5251 Datasheet - Page 53
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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
3.2.3
For the correct calculation of the external capacitors the parasitic capacitances of the pins and the
switches (C
Figure 3-17
Table 3-2
With the given parasitics the actual C
Note: Please keep in mind also to include the Pad parasitics of the circuit board.
Data Sheet
C vm
C v+
=
20
Name
Parasitics
C 20
C 21
C 22
, C
(
---------------------------------------------------------------------------------------------------------------------------------------- -
Typical values of parasitic capacitances
C
=
C v1
parasitics of the switching network
v1
21
(
-------------------------------------------------------------------------------------------------------
C
C v1
, C
+
+
v1
C
C tune1
22
tune1
C
+
+
v-
) have to be taken into account.
C
C
C
C tune1
tune1
V1
V2
=
)
+
⋅
C
(
C v2
v1
C
)
C
f, C
+
v2
⋅
V3
+
(
C v2
C
+
L
C
+
v2
C 20
tune1
C
XSWA 22
XOUT 19
XSWF 20
XGND 23
+
20
+
v
XIN 21
C 20
+
can be calculated:
C
+
20
C
+
C
FSK-: 2,8 pF / FSK+&ASK: 2.2pF
v3
+
C
v3
+
21
C
C
+
+
tune2
tune2
C 22
C
53
22
C
22
L
+
+
)
C
+
C
tune2
tune2
C
C 21
4,6 pF
21
Value
1 pF
-R
)
C
+
20
C 21
C
C
tune2
tune1
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TDA5251 F1
Version 1.1
QOSC_parasitics.wmf
Application
2007-02-26