th7121 ETC-unknow, th7121 Datasheet - Page 6

• Manufacturer Part Number: th7121
• Description: 300 To 930mhz Fsk/fm/ask Transceiver
• Manufacturer: ETC-unknow

3901007121
Rev. 001
Pin No.
21
23
24
25
27
28
26
29
LF
TNK_LO
PS_PA
OUT_PA
VEE_LNA
OUT_LNA
IN_LNA
GAIN_LNA input
Name
analog I/O
analog I/O
analog I/O
output
ground
output
input
I/O Type
PS_PA
24
TNK_LO
GAIN_LNA
IN_LNA
OUT_PA
26
23
25
Functional Schematic
29
VEE
21
VEE
LF
VCC
120
VEE
Page 6 of 28
bias
3.8k
VEE
VEE
VCC
120
120
37
VCC
VEE
33
VEE
40p
VEE
VCC
OUT_LNA
VCC
33
VEE
28
VCC
FSK/FM/ASK Transceiver
charge pump output, con-
nection to external loop filter
VCO open-collector output,
connection to external LC
tank
power-setting input
power amplifier open-
collector output
ground of LNA and PA
LNA open-collector output,
connection to external LC
tank at RF
LNA input,
approx. 50 single-ended
LNA gain control input
300 to 930MHz
Description
TH7121
Data Sheet
Jan. 2002