AT86RF211DAI Atmel, AT86RF211DAI Datasheet - Page 18

• Manufacturer Part Number: AT86RF211DAI
• Description: IC RF TXRX FSK 400-950MHZ 48TQFP
• Manufacturer: Atmel

Specifications of AT86RF211DAI

• Frequency: 400MHz ~ 950MHz
• Data Rate - Maximum: 100kbps
• Modulation Or Protocol: FSK
• Applications: ISM
• Power - Output: 7dBm ~ 12dBm
• Sensitivity: -107dBm
• Voltage - Supply: 2.4 V ~ 3.6 V
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-TQFP Exposed Pad, 48-eTQFP, 48-HTQFP, 48-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Memory Size: -
• Current - Transmitting: -
• Current - Receiving: -

18
AT86RF211 (TRX01)
•
Qc = 8 x 0.8 + 13 x 48 + 4200 x 0.003 = 643 mA.ms
Number of 4.2s cycles = 4.7 10
12 months ± 1 month.
The conclusion is that the use of the transceiver with the feature of a stand-alone wake-
up mode allows to save energy and improve batteries' life.
–
–
–
Consumption is determined by sleep mode, oscillator settling & WL1.
During each 1610 ms cycle here are:
–
–
–
Qc = 8 x 0.8 + 3 x 29 + 4170 x 0.003 = 105.9 mA.ms
Number of 4181 ms cycles = 4.7 10
sponding to 6 years ± 20% (± 1.2 year).
With a single transmitter, the chip must send the data each time (so every 4.2 s)
With the same parameters, during each 4.2 s cycle Atmel has:
–
–
–
–
WL1 = 2 ms, WL2 = 16 ms, (1 ms + WPER + 8 ms +WL1) + 20% = 5 s, so
the worst case to make sure that the device is ready to answer before 5s is:
(1 ms + WPER + 8 ms + WL1) = 4166 ms => WPER = 4170 ms
('010101010').
as the WPER is short, there is no need to care about the discharge of the
SKFILT capacitor: the level remains constant.
since "request & answer" occurs typically once an hour, the corresponding
power consumption can be neglected.
8 ms: oscillator settling time, the consumption is 0.8 mA.
0.5 ms for the PLL + WL1 = 2.5 ms in reception mode (rounded to 3 ms).
3 µA during 4170 ms: sleep mode.
8 ms: oscillator settling time, the consumption is 0.8 mA.
0.5 ms for the PLL transmission mode.
48 mA during 13 ms: transmission of the information.
3 µA during 4.2 s: sleep mode.
9
/643 = 7 309 489 cycles of 4.2s, corresponds to
9
/105.9 = 44 381 490 cycles of 4181 ms corre-
2186A–WIRE–08/02