th71112 Melexis Company, th71112 Datasheet - Page 8

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

39010 71112
Rev. 014
Pin No.
21
22
23
24
25
26
27
28
29
30
32
RSSI
VEE_BIAS
OUTP
OUTN
VEE_RO
RO
VCC_PLL
ENRX
LF
VEE_LNA
VCC_LNA
Name
output
analog
output
analog
output
analog
input
supply
digital
input
analog I/O
supply
analog
ground
ground
ground
I/O Type
OUTN
OUTP
ENRX
23
24
LF
29
28
RSSI
Functional Schematic
RO
26
21
Page 8 of 22
50
1.5k
Ω
200
400
30p
20µA
30p
50k
50
Ω
Ω
Ω
36k
I (Pi)
4p
20µA
RSSI output, for RSSI and
ASK detection, approx.
36kΩ output impedance
ground of general
bias system and OA
FSK positive output, output
impedance of
300kΩ
FSK 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
positive supply of DIV, PFD,
RO and charge pump
mode control input,
CMOS-compatible with
internal pull-down circuit
charge pump output and
VCO1 control input
ground of LNA biasing
positive supply of
LNA biasing
FSK/ASK Receiver
TH71112
Description
868/915MHz
100kΩ to
Data Sheet
April/08