ATA5811-PLQX Atmel, ATA5811-PLQX Datasheet - Page 13

• Manufacturer Part Number: ATA5811-PLQX
• Manufacturer: Atmel

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

4689B–RKE–04/04
Figure 9 shows narrow band blocking and Figure 10 wide band blocking characteristics.
T h e m e a s u r e m e n t s w e r e d o n e w i t h a u s e f u l s i g n a l o f 4 3 3 . 9 2 M H z / F S K /
20 kBaud/ 16 kHz/Manchester 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
done at the 50
blocker can be 56 dB higher than -103 dBm which is -103 dBm + 56 dB = -47 dBm.
These values, together with the good intermodulation performance, avoid the need for a
SAW filter in the key fob application.
Figure 9. Narrow Band 3 dB Blocking Characteristic at 433.92 MHz
Figure 10. Wide Band 3 dB Blocking Characteristic at 433.92 MHz
Figure 11 on page 14 shows the blocking measurement close to the received frequency
to illustrate the selectivity and image rejection. This measurement was done 6 dB above
the sensitivity level with a useful signal of 433.92 MHz/FSK/20kBaud/±16 kHz/
Manchester with a level of -106 dBm + 6 dB = -100 dBm. The figure shows to which
extent a continuous wave signal can surpass -100 dBm until the BER is higher than
10
is -100 dBm + 59 dB = -41 dBm.
-3
. For example, at 1 MHz the blocker can than be 59 dB higher than -100 dBm which
-10,0
-10,0
60,0
40,0
30,0
20,0
80,0
60,0
40,0
30,0
20,0
70,0
50,0
70,0
50,0
10,0
10,0
0,0
0,0
input according to Figure 7 on page 10 At 1 MHz, for example, the
-50,0
-5,0
Distance of Interfering to Receiving Signal [MHz]
Distance of Interfering to Receiving Signal [MHz]
-40,0
-4,0
ATA5811/ATA5812 [Preliminary]
-30,0
-3,0
-20,0
-2,0
-10,0
-1,0
0,0
0,0
10,0
1,0
20,0
2,0
30,0
3,0
-3
40,0
. The measurements were
4,0
50,0
5,0
13