ATA5812-PLQW80 Atmel, ATA5812-PLQW80 Datasheet - Page 13
![RF Transceiver RF Data Control Transceiver](/photos/30/99/309912/qfn-48_sml.jpg)
ATA5812-PLQW80
Manufacturer Part Number
ATA5812-PLQW80
Description
RF Transceiver RF Data Control Transceiver
Manufacturer
Atmel
Datasheet
1.ATA5811-PLHC.pdf
(92 pages)
Specifications of ATA5812-PLQW80
Wireless Frequency
226 KHz
Interface Type
4-Wire SPI
Noise Figure
7 dB
Output Power
10 dBm
Operating Supply Voltage
2.4 V to 5.25 V
Maximum Operating Temperature
+ 105 C
Mounting Style
SMD/SMT
Package / Case
QFN-48
Maximum Data Rate
20 Kbps
Minimum Operating Temperature
- 40 C
Modulation
ASK, FSK
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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5.6
4689F–RKE–08/06
Blocking, Selectivity
As can be seen in
the sensitivity level in presence of very large blockers of –47 dBm/–34 dBm with small frequency
offsets of ±1 ±10 MHz.
Figure 5-3
measurements were done with a useful signal of433.92 MHz/FSK/20 Kbit/s/ 16 kHz/Manches-
ter with a level of –106 dBm + 3 dB = –103 dBm which is 3 dB above the sensitivity level. The
figures show how much a continuous wave signal can be larger than –103 dBm until the BER is
higher than 10
page
–103 dBm + 56 dB = –47 dBm. These values, together with the good intermodulation perfor-
mance, avoid the need for a SAW filter in the key fob application.
Figure 5-3.
Figure 5-4.
10. At 1 MHz, for example, the blocker can be 56 dB higher than –103 dBm which is
shows narrow band blocking and
Narrow Band 3 dB Blocking Characteristic at 433.92 MHz
Wide Band 3 dB Blocking Characteristic at 433.92 MHz
-3
. The measurements were done at the 50 input according to
Figure 5-3
-10,0
-10,0
80,0
60,0
40,0
30,0
20,0
60,0
40,0
30,0
20,0
70,0
50,0
70,0
50,0
10,0
10,0
0,0
0,0
-50,0
-5,0
Distance of Interfering to Receiving Signal [MHz]
Distance of Interfering to Receiving Signal [MHz]
and
-40,0
-4,0
Figure
-30,0
-3,0
-20,0
-2,0
5-4, the receiver can receive signals 3 dB higher than
-10,0
Figure 5-4
-1,0
0,0
0,0
10,0
1,0
wide band blocking characteristics. The
20,0
2,0
ATA5811/ATA5812
30,0
3,0
40,0
4,0
50,0
5,0
Figure 5-1 on
13
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