T5750-6AQJ Atmel, T5750-6AQJ Datasheet - Page 6

• Manufacturer Part Number: T5750-6AQJ
• Description: RF Transmitter ASK/FSK Transmitter 868 - 928 MHz
• Manufacturer: Atmel
• Type: Transmitterr

Specifications of T5750-6AQJ

• Package / Case: TSSOP-8
• Operating Frequency: 928 MHz
• Maximum Operating Temperature: 125 C
• Mounting Style: SMD/SMT
• Operating Supply Voltage: 2.5 V, 3.3 V
• Operating Temperature (max): 125C
• Operating Supply Voltage (typ): 2.5/3.3V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

4.4
6
Application Circuit
T5750
Figure 4-2.
For the supply-voltage blocking capacitor C
4-3 on page 7
power amplifier where C
series should be used to achieve a better tolerance value and to have the possibility to realize
the Z
C
suppresses the 1
best suppression is achieved when C
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
(
forms together with the pins of T5750 and the PCB board wires a series resonance loop that
Load,opt
50 nH to 100 nH) can be printed on PCB. C
by using standard valued capacitors.
Output Power Measurement
and
st
Figure 4-4 on page
harmonic, hence the position of C
ANT1
ANT2
1
typically is 3.9 pF/NP0 and C
Z
Lopt
V
L
S
1
10 nH
1.5 pF
8). C
1
1 nF
is placed as close as possible to the pins ANT1 and
C
C
1
2
C
3
3
1
a value of 68 nF/X7R is recommended (see
and C
2.7 pF
4
2
should be selected so that the XTO runs on
Z = 50
are used to match the loop antenna to the
1
on the PCB is important. Normally the
2
is 1 pF/NP0; for C
Power
meter
50
R
in
2
two capacitors in
4546F–RKE–12/08
Figure