TH71102
315/433MHz
FSK/FM/ASK Receiver
3.5
AC System Characteristics
all parameters under normal operating conditions, unless otherwise stated;
typical values at T
A
= 23 °C and V
CC
= 3 V,
RF at 433.92 MHz; SAW frond-end filter loss and IF at 10.7 MHz;
all parameters based on test circuits as shown in Fig. 2, Fig.3 and Fig. 5
Parameter
Receive Characteristics
Input sensitivity – FSK
(standard)
P
min, ST
B
IF
= 180kHz,
Δf
=
±20kHz,
4kbps NRZ,
BER
≤
3⋅10
-3
, 6)
B
IF
= 30kHz,
Δf
=
±5kHz,
4kbps NRZ,
BER
≤
3⋅10
-3
, 6)
B
IF
= 180kHz,
4kbps NRZ,
BER
≤
3⋅10
-3
, 6)
BER
≤
3⋅10
-3
GAIN_LNA = 1
-104
dBm
Symbol
Condition
Min
Typ
Max
Unit
Input sensitivity – FSK
(narrow band)
P
min, NB
-108
dBm
Input sensitivity – ASK
P
min, ASK
-110
dBm
Maximum input signal – FSK/FM
Maximum input signal – ASK
Spurious emission
Image rejection
Start-up Parameters
Crystal start-up time
Receiver start-up time
P
max, FSK
0
-10
-70
65
dBm
dBm
dBm
dB
ms
P
max, ASK
BER
≤
3⋅10
-3
GAIN_LNA = 1
P
spur
ΔP
imag
T
XTL
T
RX
ENRX from 0 to 1
ENRX from 0 to 1,
depends on data slicer
time constant,
valid data at output
0.9
T
XTL
+
R4 · C17
PLL Parameters
VCO gain
Charge pump current
K
VCO
I
CP
250
60
MHz/V
µA
6) incl. 3 dB loss of front-end SAW filter
39010 71102
Rev. 013
Page 11 of 22
Data Sheet
June/07
MELEXIS [ Melexis Microelectronic Systems ]
