MLX71121 Datasheet, PDF (22/28 Pages) Melexis Microelectronic Systems – 300 to 930MHz FSK/FM/ASK Receiver

MLX71121
300 to 930MHz
FSK/FM/ASK Receiver
4.4 AC System Characteristics
all parameters under normal operating conditions, unless otherwise stated;
typical values at T_A= 23 °C and V_CC = 3 V, all parameters based on test circuits as shown Fig. 11
Parameter
Symbol
Condition
Min Typ Max
Receive Characteristics
Input Sensitivity 1)
MODSEL RFSEL
315MHz
FSK
433MHz
868MHz
915MHz
315MHz
ASK
433MHz
868MHz
915MHz
Maximum input signal – FSK
Maximum input signal – ASK
Spurious emission
Image rejection 1^st IF
Image rejection 2^nd IF
LNA Parameters
P_min1
P_min2
P_min3
P_min4
P_min5
P_min6
P_min7
P_min8
P_{max, FSK}
P_{max, ASK}
P_spur
IR₁
IR₂
0
1
1
0
0
1
MODSEL=1
MODSEL=0, M>20dB
w/o SAW filter
-107
-107
-104
-102
-112
-112
-108
-105
-10
-10
-54
20
25
Voltage gain
G_LNA depends on external
LC tank
18
IF Filter Parameters
Center frequency
f_cent
1.8
3dB bandwidth
B_3dB
300
40dB bandwidth
B_40dB
1.4
IF Amplifier / RSSI
Operating frequency
RSSI dynamic range
RSSI slope
FSK Demodulator
f_IFA
DR_RSSI
S_RSSI
0.4
11
60
20
Input frequency range
f_DEM
1.8
Carrier acceptance range
Δf_DEM
±80
Demodulator sensitivity
S_DEM
5
1) at 4kbps NRZ, BER ≤ 3⋅10^-3, peak detector data slicer, LNASEL = 0 or 1
Unit
dBm
dBm
dBm
dBm
dBm
dB
dB
dB
MHz
kHz
MHz
MHz
dB
mV/dB
MHz
kHz
mV/
kHz
39010 71121
Rev. 007
Page 22 of 28
Data Sheet
Feb/08