ATA5812-PLQ Atmel, ATA5812-PLQ Datasheet - Page 13

• Manufacturer Part Number: ATA5812-PLQ
• Description: IC TXRX UHF ASK/FSK 1CH 48-QFN
• Manufacturer: Atmel

Specifications of ATA5812-PLQ

• Frequency: 315MHz
• Data Rate - Maximum: 20kbps
• Modulation Or Protocol: ASK, FSK
• Applications: Access Control, AMR, RKE
• Sensitivity: -116dBm
• Voltage - Supply: 2.4 V ~ 3.6 V or 4.4 V ~ 6 V
• Current - Receiving: 10.5mA
• Current - Transmitting: 10.5mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 48-VQFN Exposed Pad, 48-HVQFN, 48-SQFN, 48-DHVQFN
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -
• Memory Size: -
• Other names: ATA5812-PLQTR

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