ATA5811-PLQW80 Atmel, ATA5811-PLQW80 Datasheet - Page 58

• Manufacturer Part Number: ATA5811-PLQW80
• Description: RF Transceiver RF Data Control Transceiver
• Manufacturer: Atmel

Specifications of ATA5811-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

Figure 11-10. Bit Error (TMODE = 0)
11.1.8
Table 11-3.
f
MHz
315.0
(12.73193)
433.92
(13.25311)
868.3
(13.41191)
58
RF
(f
XTAL
)/
ATA5811/ATA5812
Recommended Lim_min and Lim_max for Maximum Sensitivity
1.0 Kbit/s
BR_Range_0/XLim = 1
Lim_min = 13 (261 µs)
Lim_max = 38 (744 µs)
Lim_min = 13 (251 µs)
Lim_max = 38 (715 µs)
Lim_min = 13 (248 µs)
Lim_max = 38 (706 µs)
Demod_Out
Recommended Lim_min and Lim_max Values for Different Bit Rates
Table 11-2.
The sensitivity measurement in the section “Low-IF Receiver” in
5-4 on page 11
These values are optimized for maximum sensitivity. Note that since these Limits are optimized
for sensitivity the number of checked bit N
waking up to a often in polling mode due to noise.
Mode
RX
Receiving mode
2.4 Kbit/s
BR_Range_0/XLim = 0
Lim_min = 12 (121 µs)
Lim_max = 34 (332 µs)
Lim_min = 12 (116 µs)
Lim_max = 34 (319 µs)
Lim_min = 12 (115 µs)
Lim_max = 34 (315 µs)
ASK/_NFSK
RX Modulation Scheme
have been done with the Lim_min and Lim_max values according to
0
1
T_MODE
Lim_min = 11 (52 µs)
Lim_max = 32 (148 µs)
5 Kbit/s
BR_Range_1/XLim = 0
Lim_min = 11 (55 µs)
Lim_max = 32 (156 µs)
Lim_min = 11 (53 µs)
Lim_max = 32 (150 µs)
Start-up mode Bit-check mode
0
0
1
1
0
0
1
1
f
f
ASK
ASK
f
f
Bit-check
FSK_L
FSK_H
off
on
f
f
f
ASK
ASK
f
RF
FSK_H
FSK_L
IN
has to be at least 6 to prevent the circuit from
on
off
f
f
f
f
FSK_H
ASK
ASK
FSK_L
10 Kbit/s
BR_Range_2/XLim = 0
Lim_min = 11 (28 µs)
Lim_max = 32 (78 µs)
Lim_min = 11 (27 µs)
Lim_max = 32 (75 µs)
Lim_min = 11 (26 µs)
Lim_max = 32 (74 µs)
on
off
Bit in TX/RX Data
Receiving mode
Table 5-3 on page 11
Buffer
1
0
–
–
1
0
–
–
20 Kbit/s
BR_Range_3/XLim = 0
Lim_min = 11 (14 µs)
Lim_max = 31 (38 µs)
Lim_min = 11 (13 µs)
Lim_max = 32 (37 µs)
Lim_min = 11 (13 µs)
Lim_max = 32 (37 µs)
Level on Pin
SD0_TMDO
4689F–RKE–08/06
Table
and
Z
Z
1
0
Z
Z
1
0
Table
11-3.