ML2722
RECEIVER
Z
IN
NF
DR
RX
S
BW
RX
P
IMAX
I
IP3
IRR
Receiver RF impedance
Receiver RF noise figure
Data Rate
Input Sensitivity
Bandwidth
Maximum RX RF input
Receiver input IP3
LO Leakage at RXI
Receive RF mixer image
rejection
Adjacent channel rejection
Measured at 3.5MHz offset
-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
RXON high to valid data
f
c
=915 MHz
f
c
=915 MHz
FSK modulation, fdev=+/-460KHz
For better than 12.5% CER
3dB nominal
<12.5% CER at 1.536Mchip/s
Test tones 2 and 4 channels away
17-j50
9
1.536
-95
770
8
-12
-80
35
Ω
dB
Mbps
dBm
kHz
dBm
dBm
dBm
dB
15
40
45
120
dB
Receiver settling time
IF FILTERS
f
IFC
BW
IF
IF filter center frequency
IF filter 3dB bandwidth
µs
After Automatic Filter Alignment
After Automatic Filter Alignment
1.024
1405
MHz
kHz
LIMITER, AGC, AND FM DEMODULATOR
t
OVLD
Recovery from overload
Eb/No
Co-Channel rejection, 12.5%
CER
AM tolerance for 12.5% or better
CER
RSSI PERFORMANCE
t
RRSSI
t
FRSSI
V
RSMX
V
RSMN
G
RSMID
P
RSMX
P
RSMN
RSSI rise time: < -100dBm to
-15dBm into the IF mixer
RSSI fall time: <-15dBm to
<-100dBm into the IF mixer
RSSI maximum voltage
RSSI minimum voltage
RSSI sensitivity, mid range
RSSI maximum signal
RSSI minimum signal
RSSI accuracy
Sensitivity is >50% mid range
Sensitivity is >50% mid range
Measured at -40dBm input power
1.5
20 pF load, 20% to 80%
20 pF load, 20% to 80%
-15dBm in
No signal
28
1
1
2.2
5.3
4.4
2.8
0.05
35
-20
-95
1.9
2.1
42
10
10
µs
µs
V
V
mV/dB
dBm
dBm
V
From 0dBm at input
For 12.5% CER
-80 dBm, modulated with 1.536Mbps
GFSK, BT=0.5, PRBS data
-80 dBm wanted signal, AM
modulation depth at 100 KHz rate
5
3
4
90
12
µs
dB
dB
%
DS2722-F-05
FINAL DATASHEET
DECEMBER 2003
5
MICRO-LINEAR [ MICRO LINEAR CORPORATION ]
