TDA7110F Infineon Technologies, TDA7110F Datasheet - Page 24

• Manufacturer Part Number: TDA7110F
• Description: IC TX ASK/FSK 434MHZ 10-TSSOP
• Manufacturer: Infineon Technologies

Specifications of TDA7110F

• Frequency: 433MHz ~ 435MHz
• Applications: Remote Control, RKE, Security Systems
• Modulation Or Protocol: ASK, FSK
• Power - Output: 11dBm
• Current - Transmitting: 21mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Voltage - Supply: 2.1 V ~ 4 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 10-TSSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Memory Size: -
• Data Rate - Maximum: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: SP000611108

If the FSK switch is closed, Cv
FSK switch is open, Cv2 (C2 in the application diagram) can be calculated.
Csw:
Remark:
on the parasitic and thus on the layout also and must be adapted for the specific
application board.
3.5
The CLKOUT pin is an open collector output. An external pull up resistor (RL) should be
connected between this pin and the positive supply voltage. The value of RL is
depending on the clock frequency and the load capacitance CLD (PCB board plus input
capacitance of the microcontroller). RL can be calculated to:
Table 7
Remark:
Data Sheet
parallel capacitance of the FSK switch (3 pF incl. layout parasitics)
These calculations are only approximations. The necessary values depend
Design Hints on the Clock Output (CLKOUT)
Clock Output
To achieve a low current consumption and a low
spurious radiation, the largest possible RL should be chosen.
CL
10
20
[
5
pF
Cv
]
2
=
C
2
RL
±
=
Cv
fCLKOUT=847.5 kHz
is equal to Cv1 (C1 in the application diagram). If the
=
Csw
±
fCLKOUT
=
∗
Cv
CL
1
24
1
±
(
−
Cv
1
1
(
+
Cv
*
+
ω
8
)
+
2
−
*
)
L
CLD
Cv
∗
(
Cv
1
1
RL
+
Csw
[
kOhm
6.8
27
12
)
]
V 1.0, 2009-02-26
Applications
TDA7110F