TH71101_13 Datasheet, PDF (8/20 Pages) Melexis Microelectronic Systems – FSK/ASK Receiver

TH71101
315/433MHz
FSK/ASK Receiver
Pin No. Name
21 RSSI
I/O Type
analog
output
22 VEE_BIAS ground
23 OUTP
analog
output
24 OUTN
analog
output
25 VEE_RO
26 RO
ground
analog
input
27 VCC_PLL supply
28 ENRX
digital
input
Functional Schematic
RSSI
21
I (Pi)
50Ω
36k
OUTP
OUTN
23
24
50Ω
20µA
20µA
50k
RO
26
30p
30p
ENRX
1.5k
28
Description
RSSI output, for RSSI and
ASK detection, approx.
36kΩ output impedance
ground of general
bias system and OA
FSK positive output, output
impedance of 100kΩ to
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
29 LF
analog I/O
LF
29
30 VEE_LNA ground
32 VCC_LNA supply
200Ω
400Ω
4p
39010 71101
Rev. 018
Page 8 of 21
charge pump output and
VCO1 control input
ground of LNA biasing
positive supply of
LNA biasing
Data Sheet
Jun/13