TH71101_13 Datasheet, PDF (11/20 Pages) Melexis Microelectronic Systems – FSK/ASK Receiver

TH71101
315/433MHz
FSK/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
Symbol
Condition
Min
Receive Characteristics
Input sensitivity – FSK
(standard)
Input sensitivity – FSK
(narrow band)
Input sensitivity – ASK
Maximum input signal – FSK
Maximum input signal – ASK
Spurious emission
Image rejection
Start-up Parameters
P_{min, ST}
P_{min, NB}
P_{min, ASK}
P_{max, FSK}
P_{max, ASK}
P_spur
∆P_imag
B_IF = 180kHz,
∆f = ±20kHz,
4kbps NRZ,
BER ≤ 3⋅10^-3, 6)
B_IF = 30kHz,
∆f = ±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
BER ≤ 3⋅10^-3
GAIN_LNA = 1
Crystal start-up time
Receiver start-up time
T_XTL ENRX from 0 to 1
T_RX ENRX from 0 to 1,
depends on data slicer
time constant,
valid data at output
PLL Parameters
VCO gain
Charge pump current
K_VCO
I_CP
6) incl. 3 dB loss of front-end SAW filter
Typ Max Unit
-104
dBm
-108
dBm
-110
dBm
0
dBm
-10
dBm
-70
dBm
45
dB
0.9
ms
T_XTL
+
R4 · C17
250
MHz/V
60
µA
39010 71101
Rev. 018
Page 11 of 21
Data Sheet
Jun/13