ATA5823-PLQW 80 Atmel, ATA5823-PLQW 80 Datasheet - Page 9

• Manufacturer Part Number: ATA5823-PLQW 80
• Manufacturer: Atmel

Specifications of ATA5823-PLQW 80

• Operating Temperature (min): -40C
• Operating Temperature (max): 105C
• Operating Temperature Classification: Industrial
• Product Depth (mm): 7mm
• Product Height (mm): 0.9mm
• Product Length (mm): 7mm
• Operating Supply Voltage (typ): 2.5/3.3V
• Operating Supply Voltage (max): 3.6V
• Lead Free Status / Rohs Status: Compliant

6. Typical Car Application for Full-duplex PEG
4829D–RKE–06/06
Figure 6-1.
Figure 6-1
components are 11 capacitors, 1 resistor, 3 inductors, a SAW Filter and a crystal. C
are 68 nF voltage supply blocking capacitors. C
internal voltage regulator. C5 is a 10 nF supply blocking capacitor. C
used for the internal quasi-peak detector and for the high-pass frequency of the data filter. C
C
120 nH, L
RF_IN. A load capacitor of 9 pF for the crystal is integrated. C
necessary to prevent that signals couple into the pin R_PWR, causing amplitude modulation of
the output power and a spurious rise of the transmitted signal. R
close to the R_PWR pin. R
power of 0 dBm in full-duplex mode and 5 dBm in half-duplex mode. The quality factor of the
TX-loop antenna is only reduced by the quality factor of L
important. Since the 2 Antennas are located at different places the isolation between RF_OUT
and RF_IN is about 45 dB and the coupled output power from RF_OUT to RF_IN is about
–
RF power at RF_IN to
ters in the full-duplex system is unsuitable due to the high group delay which desensitize the
receiver.
45 dBm. The receive Sensitivity in full-duplex mode is reduced from
10
connector to
RX antenna
are RF matching capacitors in the range of 1 pF to 33 pF. L
RFIN
TX Loop antenna
50
(located in the
L
control unit)
2
AVCC
2
shows a typical 433.92 MHz V
and L
C
8
SAW-filter
Typical Car Application for Full-duplex PEG, 433.92 MHz
3
are matching inductors to match the RX-antenna to the SAW and the SAW to
L
1
C
C
C
–
5
10
9
L
102 dBm with
3
1
C
R
11
is typically 22 k and SETPWR is programmed to get an output
1
C
7
NC
NC
NC
RF_IN
NC
433_N868
NC
R_PWR
PWR_H
RF_OUT
NC
NC
–
45 dBm coupled RF power at RF_IN. The use of SAW fil-
CC
ATA5823/ATA5824
C
= 4.4V to 5.25V PEG car application. The external
1
2
V
C
is a 2.2 µF supply blocking capacitors for the
CC
2
= 4.4V to 5.25V
C
1
C
2
, the tolerances of C
4
SDO_TMDO
ATA5823/ATA5824
SDI_TMDI
CDEM
TEST3
VSINT
11
POUT
RSSI
SCK
CLK
IRQ
13.25311 MHz
CS
NC
is a 10 nF capacitor which is
1
C
1
6
is a feed inductor of about
XTAL2
6
and C
–
is a 15 nF fixed capacitor
106 dBm without coupled
11
9
should be placed
and C
C
VCC
3
Microcontroller
1
, C
10
3
are thus
and C
VSS
7
to
9
4