TH71102
315/433MHz
FSK/FM/ASK Receiver
Pin No.
21
Name
RSSI
I/O Type
analog
output
Functional Schematic
Description
RSSI output, for RSSI and
ASK detection, approx.
36kΩ output impedance
RSSI
21
50
Ω
I (Pi)
36k
22
23
VEE_BIAS
OUTP
ground
analog
output
analog
output
ground
analog
input
RO
26
30p
ground of general
bias system and OA
OUTP
OUTN
23
24
50
Ω
FSK/FM positive output,
output impedance of
100kΩ to 300kΩ
20µA
20µA
24
OUTN
FSK/FM negative output,
output impedance of
100kΩ to 300kΩ
ground of DIV, PFD, RO
and charge pump
RO input, Colpitts type
oscillator with internal feed-
back capacitors
25
26
VEE_RO
RO
50k
30p
27
28
VCC_PLL
ENRX
supply
digital
input
ENRX
28
1.5k
positive supply of DIV, PFD,
RO and charge pump
mode control input,
CMOS-compatible with
internal pull-down circuit
29
LF
analog I/O
LF
29
400
Ω
200
Ω
charge pump output and
VCO1 control input
4p
30
32
VEE_LNA
VCC_LNA
ground
supply
ground of LNA biasing
positive supply of
LNA biasing
39010 71102
Rev. 013
Page 8 of 22
Data Sheet
June/07
MELEXIS [ Melexis Microelectronic Systems ]
