AT48810 Ver la hoja de datos (PDF) - Atmel Corporation
Número de pieza
componentes Descripción
Fabricante
AT48810 Datasheet PDF : 5 Pages
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Transmit Power
Power Output
On/Off Control
+17 dBm at VCC = 5.0 VDC,
VPA = 4.0 VDC
TX PWR input pin 16, CMOS
compatible, low = power on
RF power amp VCC is on a separate pin
from the other circuits VCC.
Receive
Sensitivity
IF Bandwidth
Signal-to-Noise
Post Detection Net Bandwidth
RSSI Output
Attenuators
Audio Output
Interface Rejection
-105 dBm max. at 12 dB SINAD (C-weighted)
30 kHz at -3 dB nominal
30 dB min. C-weighted at -80 dBm
15 kHz, limited by IF filter
Log compressed. Slope 0.24 uA/dB nominal into a zero ohm load. Rout =
58K nominal. Bandwidth 15 kHz, limited by IF filter. Noise floor - 110 dBm
equivalent input.
T/R switch → T gives 35 dB nominal, low = transmit. GAIN control gives
17 dB nominal in LNA low = high gain. (binary controls: on/off only, CMOS
compatible.)
Sensitivity 0.4 uA/kHz nominal into a zero ohm load. Rout = 58K nominal.
This output must be lowpass filtered (-3 dB at 200 Hz, 6 dB/octave) to give
net link frequency response which is flat.
Out of Band
Antenna filter is -6 dB at fo ±32.5 MHz and approx. -30 dB at fo ±100 MHz.
A cellular phone with 1 watt power at a distance of 5 feet produces no
noticeable SNR degradation in the receiver for the mating transmitter at a
distance of 10 feet, running spread spectrum R13 code.
In Band
Processing gain depends on code length. The use of RF despreading
assures that the high processing gain can be maximally effective by
allowing narrow IF bandwidth thus significantly reducing IF jamming
induced desensitization.
Clock Output
15.360 MHz buffered from TCXO, CMOS compatible, one
standard load.
Data Port
SPI/3-wire, 3 lines. Synthesizer device is National Semi-
conductor LMX1501 or equal.
3-4
AT48810
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