ATA5811-PLQX Atmel, ATA5811-PLQX Datasheet - Page 7
ATA5811-PLQX
Manufacturer Part Number
ATA5811-PLQX
Description
Manufacturer
Atmel
Datasheet
1.ATA5811-PLQX.pdf
(90 pages)
Specifications of ATA5811-PLQX
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
Lead Free Status / Rohs Status
Compliant
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Figure 5. Typical RKE Car or Sensor Base-station Application, 433.92 MHz
Typical Car or Sensor
Base-station Application
4689B–RKE–04/04
L
RF
connector
4
50
OUT
C
SAW-Filter
11
AVCC
C
10
L
2
L
Figure 5 shows a typical 433.92 MHz V
station application. The external components are 12 capacitors, 1 resistor, 4 inductors, a
SAW filter and a crystal. C
C
is a 10 nF supply blocking capacitor. C
quasi peak detector and for the highpass frequency of the data filter. C
matching capacitors in the range of 1 pF to 33 pF. L
about 5.6 nH to 56 nH. A load capacitor for the crystal of 9 pF is integrated. R
cally 22 k
wave or PCB antenna, which has high efficiency and wide band operation, is typically
used here, it is recommended to use a SAW filter to achieve high sensitivity in case of
powerful out-of-band blockers. L
needed to filter out the harmonics in the transmitted signal to meet regulations. An inter-
nally regulated voltage at pin VSOUT can be used in case the microcontroller only
supports 3.3 V operation, a blocking capacitor with a value of C
connected to VSOUT in any case.
1
C
L
2
5
3
C
and C
C
9
8
R
1
12
are 2.2 µF supply blocking capacitors for the internal voltage regulators. C
and sets the output power at RF_OUT to about 10 dBm Since a quarter
C
NC
NC
NC
NC
NC
NC
NC
433_N868
R_PWR
PWR_H
RF_IN
RF_OUT
7
ATA5811/ATA5812
C
1
ATA5811/ATA5812 [Preliminary]
C
1
2
VCC = 4.75 V..5.25 V
and C
1
C
, C
3
4
to C
10
C
SDO_TMDO
12
DEM_OUT
SDI_TMDI
N_RESET
6
and C
CC
4
is a 15 nF fixed capacitor used for the internal
CDEM
VSINT
are 68 nF voltage supply blocking capacitors.
RSSI
SCK
IRQ
CLK
= 4.75 V to 5.25 V RKE car or sensor base-
NC
CS
C
9
XTAL2
6
together form a lowpass filter, which is
2
to L
13.25311 MHz
Microcontroller
VCC
C
3
4
are matching inductors of
VSS
12
= 2.2 µF has to be
7
to C
11
1
are RF
is typi-
7
5
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