T48C862M-R3-TNS Atmel, T48C862M-R3-TNS Datasheet - Page 8
T48C862M-R3-TNS
Manufacturer Part Number
T48C862M-R3-TNS
Description
IC MON TIRE PRESS 315MHZ 24SOIC
Manufacturer
Atmel
Datasheet
1.T48C862M-R3-TNS.pdf
(107 pages)
Specifications of T48C862M-R3-TNS
Frequency
315MHz
Modulation Or Protocol
FM, FSK
Data Rate - Maximum
32 kBaud
Power - Output
10dBm
Current - Transmitting
9.5mA
Data Interface
PCB, Surface Mount
Antenna Connector
PCB, Surface Mount
Memory Size
1KB EEPROM, 1KB RAM
Voltage - Supply
2 V ~ 4 V
Operating Temperature
-40°C ~ 125°C
Package / Case
24-SOIC (0.200", 5.30mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Features
-
Applications
-
- Current page: 8 of 107
- Download datasheet (2Mb)
Application Circuit
8
T48C862-R3
Figure 5. Output Power Measurement
For the supply-voltage blocking capacitor C
(see Figure 6 and Figure 7). C
amplifier where C
series); for C
value and to have the possibility to realize the Z
capacitors.
C
series resonance loop that suppresses the 1
PCB is important. Normally the best suppression is achieved when C
as possible to the pins ANT1 and ANT2.
The loop antenna should not exceed a width of 1.5 mm, otherwise the Q-factor of the
loop antenna is too high.
L
the load resonance frequency of the crystal. Normally, a value of 12 pF results for a
15 pF load-capacitance crystal.
1
1
(50 nH to 100 nH) can be printed on PCB. C
forms together with the pins of PLL transmitter block and the PCB board wires a
2
two capacitors in series should be used to achieve a better tolerance
1
ANT1
ANT2
typically is 22 pF/NP0 and C
~
Z
Lopt
1
and C
C
C
L
V
2
1
1
S
= 2.2p
= 33n
= 1n
2
are used to match the loop antenna to the power
st
3
, a value of 68 nF/X7R is recommended
harmonic, thus, the position of C
4
Z = 50 W
should be selected so the XTO runs on
2
Load,opt
is 10.8 pF/NP0 (18 pF + 27 pF in
by using standard valued
Power
meter
50 W
R in
1
is placed as close
4554A–4BMCU–02/03
1
on the
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