RF02
Output capacitance
(set by the automatic
antenna tuning circuit)
At low bands
At high bands
1.5
1.6
2.3
2.2
2.8
Co
Qo
3.1
pF
Quality factor of the
output capacitance
16
18
22
pF
100 kHz from carrier
-85
Lout
BRFSK
dffsk
Output phase noise
dBc/Hz
kbps
1 MHz from carrier (Note 7)
-105
FSK bit rate
(Note 7)
115.2
210
FSK frequency
deviation
30
Programmable in 30 kHz steps
kHz
Crystal load
Programmable in 0.5 pF steps,
tolerance +/-10%
8.5
16
capacitance See
Crystal Selection
Guidelines
Cxl
pF
Internal POR timeout
(Note 6)
After Vdd has reached 90% of
final value
50
5
tPOR
ms
ms
ms
ms
pF
ns
Crystal oscillator
startup time
1.5
tsx
Crystal ESR < 100 Ohms
Wake-up timer clock
period
0.95
1
1.05
5 *1011
2
tPBt
Calibrated every 30 seconds
Programmable
wake-up time
twake-up
Cin, D
tr, f
Digital input
capacitance
Digital output rise/fall
time
10
15 pF pure capacitive load
Note 1: Using a CR2032 battery (225 mAh capacity), the expected battery life is greater than 2 years
using a 60-second wake-up period for sending 50 byte packets in length at 19.2 kbps with +6 dBm output
power in the 915 MHz band.
Note 2: Using anything but a 10 MHz crystal is allowed but not recommended because all
crystal-referred timing and frequency parameters will change accordingly.
Note 3: Adjustable in 8 steps.
Note 4: Optimal antenna admittance/impedance for the RF02:
Yantenna [S]
Zantenna [Ohm]
31 + j152
Lantenna [nH]
58.00
434 MHz
868 MHz
915 MHz
1.3E-3 - j6.3E-3
1.35E-3 - j1.2E-2
1.45E-3 - j1.3E-2
9 + j82
15.20
8.7 + j77
13.60
Note 5: With selective resonant antennas .
Note 6: During this period, no commands are accepted by the chip.
Note 7: The maximum FSK bitrate and the Output phase noise are dependent on the actual setting of the
PLL Setting Command.
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Fax: +86-755-82 E-mail: sales@hoperf.com http://www.hoperf.com
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