Rainbow Electronics RAM01 - Manual (Page 4)

RAM01
Version: 1.0 Date: 10/11/2008
Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: [email protected] http://www.hoperf.com 4
BR = 9.6 kbps, Average signal
power
IIP3
outh
Input IP3 out of band interferers
f-f
LO
> 5MHz
-18 dBm
CCR Co-channel rejection BER = 10
-2
with continuous wave
interferer in the channel
-4 dB
BR
100kHz
Blocking ratio BER = 10
-2
with continuous wave
interferer, BW = 85 kHz,
interferer offset 100 kHz
45 dB
BR
1MHz
Blocking ratio same as above,
interferer offset 1 MHz
50 dB
BR
10MHz
Blocking ratio same as above,
interferer offset 10 MHz 67 dB
P
maxh
Maximum input power LNA: high setting
min 99.99% OOK modulation -15 dBm
P
maxa
Maximum input power LNA: automatic or low gain setting
min 99.9% OOK modulation 0 dBm
R
in
RF input impedance real
part (differential) (Note 1) 250 Ohm
C
in
RF input capacitance 460 fF
RS
a
RSSI accuracy +/-7 dB
RS
r
RSSI range With automatic 32 dB LNA gain
switch 90 dB
RS
resp
DRSSI response time Until the RSSI output goes high
after the input signal exceeds the
preprogrammed
limit, C
ARRSI
= 5nF
500 μs
f
ref
PLL reference frequency (Note 2) 10 MHz
f
resLB
PLL frequency resolution 434 MHz Band 10 kHz
f
resHB
PLL frequency resolution 868 MHz or 915 MHz Band 20 kHz
T
settl
PLL settling time Frequency error < 1 kHz
after 1 MHz step 30 μs
t
st1, P
PLL startup time Initial calibration after power-up with
running crystal oscillator 500 μs
P
spur
Spurious emission -60 dBm
C
xl
Crystal load capacitance,
see crystal selection guide
Programmable in 0.5 pF steps,
tolerance +/- 10%
8.5 16 pF
t
POR
Internal POR pulse width
(Note 3)
After V
dd
has reached 90% of final
value
50 100 ms
t
sx
Crystal oscillator startup
time Crystal ESR < 30 Ω 5 ms
t
PBt
Wake-up timer clock period Calibrated every 30 seconds (Note
4) 0.995 1 1.005 ms
t
wake-up
Programmable wake-up
time 1 8.4*10
6 ms
C
in, D
Digital input capacitance 2 pF
t
r, f
Digital output rise/fall time 15 pF pure capacitive load 10 ns
t
r, f ,ckout
Clock output rise/fall time 10 pF pure capacitive load 15 ns
f
ckout, slow
Slow clock frequency Tolerance +/- 1 kHz 32 kHz
Note 1: See matching circuit parameters and antenna design guide for information, and Application Notes available
from http://www.hoperf.com.
Note 2: Using other than a 10 MHz crystal is not recommended because the crystal referred timing and frequency
parameters will change accordingly.
Note 3: During this period, commands are not accepted by the chip.
Note 4: Autocalibration can be turned off.