TH71112 Datasheet, PDF (7/20 Pages) List of Unclassifed Manufacturers – 868/915MHz FSK/FM/ASK Receiver

TH71112
868/915MHz
FSK/FM/ASK Receiver
Pin No. Name
21 RSSI
I/O Type
analog
output
22 VEE_BIAS ground
23 OUTP
analog
output
24 OUTN
analog
25 VEE_RO
26 RO
ground
analog
input
27 VCC_PLL supply
28 ENRX
digital
input
Functional Schematic
RSSI
21
50Ω
I (Pi)
36k
Description
RSSI output, for RSSI and
ASK detection, approx.
36kΩ output impedance
OUTP
OUTN
23
24
50Ω
20µA
50k
RO
26
30p
30p
ground for general bias
system and OA
FSK/FM positive output,
output impedance of
100kΩ to 300kΩ
FSK/FM negative output,
20µA
output impedance of
100kΩ to 300kΩ
ground of dividers, PFD and
RO
RO input, Colpitts type
oscillator with internal feed-
back capacitors
ENRX
1.5k
28
positive supply of RO, DIV,
PFD and charge pump
mode control input
(CMOS Input)
29 LF
analog
output
LF
200Ω
29
400Ω
4p
30 VEE_LNA ground
32 VCC_LNA supply
charge pump output and
VCO1 control input
LNA biasing ground
positive supply of LNA
biasing
TH71112 Data Sheet
3901071112
Page 7 of 20
Nov. 2001
Rev. 005