TH7120 Datasheet, PDF (14/28 Pages) List of Unclassifed Manufacturers – 300 to 930MHz FSK/FM/ASK Transceiver

TH7120
300 to 930MHz
FSK/FM/ASK Transceiver
C-word
Symbol
Bits No.
Description
Software button
NR16:NR0
NR16:NR0
[16:0] 17
Feedback divider ratio in RX mode
UP
[17]
1
Select frequency band:
BAND
‘1’
up to 500 MHz
‘0’
500 to 1000MHz
High2:High1 [19:18] 2
Select VCO active current:
PRELIMINARY ^VCOCUR
POLAR
[20]
1
PFDPOL
LNAGI_E
LNACTRL
[21]
1
‘00’
low current (250 µA)
‘01’
standard current (350 µA)
‘10’
high1 current (450 µA)
‘11’
high2 current (550 µA)
Select Phase Detector polarity:
‘1’
positive (1)
VCO
(1)
OUTPUT
FREQUENCY
(2)
‘0’
negative (2)
VCO INPUT VOLTAGE
Select LNA gain control mode:
‘0’
external LNA gain control
‘1’
internal LNA gain control
3901007120
Rev. 005
Page 14 of 28
Data Sheet
Jan. 2002