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參數(shù)資料
| 型號： | DS2722-F-05 |
| 英文描述： | 900MHz Low-IF 1.5Mbps FSK Transceiver Final Datasheet |
| 中文描述： | 900MHz的低IF 1.5Mbps的FSK收發(fā)器最終數(shù)據(jù)表 |
| 文件頁數(shù)： | 5/28頁 |
| 文件大?。?/td> | 463K |
| 代理商： | DS2722-F-05 |
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ML2722
DS2722-F-05
FINAL DATASHEET
DECEMBER 2003
5
RECEIVER
Z
IN
Receiver RF impedance
f
c
=915 MHz
17-j50
NF
Receiver RF noise figure
f
c
=915 MHz
9
dB
DR
RX
Data Rate
FSK modulation, fdev=+/-460KHz
1.536
Mbps
S
Input Sensitivity
For better than 12.5% CER
-95
dBm
BW
RX
Bandwidth
3dB nominal
770
kHz
P
IMAX
Maximum RX RF input
<12.5% CER at 1.536Mchip/s
8
dBm
I
IP3
Receiver input IP3
Test tones 2 and 4 channels away
-12
dBm
LO Leakage at RXI
-80
dBm
IRR
Receive RF mixer image
rejection
Measured at 3.5MHz offset
35
dB
Adjacent channel rejection
-80dBm wanted signal <12.5% CER
(a single interferer with 2GFSK
modulation to give a
-20dBc bandwidth of 1.5MHz)
1 channel
2 channels
3 or more channels
15
40
45
dB
Receiver settling time
RXON high to valid data
120
μ
s
IF FILTERS
f
IFC
IF filter center frequency
After Automatic Filter Alignment
1.024
MHz
BW
IF
IF filter 3dB bandwidth
After Automatic Filter Alignment
1405
kHz
LIMITER, AGC, AND FM DEMODULATOR
t
OVLD
Recovery from overload
From 0dBm at input
5
12
μ
s
Eb/No
For 12.5% CER
3
dB
Co-Channel rejection, 12.5%
CER
-80 dBm, modulated with 1.536Mbps
GFSK, BT=0.5, PRBS data
4
dB
AM tolerance for 12.5% or better
CER
-80 dBm wanted signal, AM
modulation depth at 100 KHz rate
90
%
RSSI PERFORMANCE
t
RRSSI
RSSI rise time: < -100dBm to
-15dBm into the IF mixer
20 pF load, 20% to 80%
1
5.3
10
μ
s
t
FRSSI
RSSI fall time: <-15dBm to
<-100dBm into the IF mixer
20 pF load, 20% to 80%
1
4.4
10
μ
s
V
RSMX
RSSI maximum voltage
-15dBm in
2.2
2.8
V
V
RSMN
RSSI minimum voltage
No signal
0.05
V
G
RSMID
RSSI sensitivity, mid range
28
35
42
mV/dB
P
RSMX
RSSI maximum signal
Sensitivity is >50% mid range
-20
dBm
P
RSMN
RSSI minimum signal
Sensitivity is >50% mid range
-95
dBm
RSSI accuracy
Measured at -40dBm input power
1.5
1.9
2.1
V
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