th71112 Melexis Company, th71112 Datasheet - Page 11

• Manufacturer Part Number: th71112
• Description: Receiver - 868/915mhz Fsk/ask, Double-conversion Superhet Lqfp32
• Manufacturer: Melexis Company

3.5
all parameters under normal operating conditions, unless otherwise stated;
typical values at T
RF at 868.3 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
6) incl. 3 dB loss of front-end SAW filter
39010 71112
Rev. 014
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
Crystal start-up time
Receiver start-up time
PLL Parameters
VCO gain
Charge pump current
AC System Characteristics
Parameter
A
= 23 °C and V
CC
Symbol
P
P
= 3 V,
P
P
P
ΔP
max, FSK
max, ASK
K
min, ASK
P
T
min, NB
min, ST
T
I
VCO
spur
XTL
CP
RX
imag
B
Δf = ±20kHz,
4kbps NRZ,
BER ≤ 3⋅10
B
Δf = ±5kHz,
4kbps NRZ,
BER ≤ 3⋅10
B
4kbps NRZ,
BER ≤ 3⋅10
BER ≤ 3⋅10
GAIN_LNA = 1
BER ≤ 3⋅10
GAIN_LNA = 1
ENRX from 0 to 1
ENRX from 0 to 1,
depends on data slicer
time constant,
valid data at output
IF
IF
IF
Page 11 of 22
= 180kHz,
= 30kHz,
= 180kHz,
Condition
-3
-3
-3
-3
-3
, 6)
, 6)
, 6)
Min
FSK/ASK Receiver
-103
-105
-109
Typ
350
-10
60
60
0
TH71112
R4 · C17
868/915MHz
Max
T
-70
0.9
XTL
+
Data Sheet
April/08
MHz/V
dBm
dBm
dBm
dBm
dBm
dBm
Unit
ms
dB
µA