U2741B_05 ATMEL [ATMEL Corporation], U2741B_05 Datasheet - Page 2

• Manufacturer Part Number: U2741B_05
• Description: UHF ASK/FSK TRANSMITTER
• Manufacturer: ATMEL [ATMEL Corporation]

Figure 1-1.
Figure 1-2.
2
Keys
1 Li cell
U2741B
System Block Diagram
Block Diagram
ATARx9x
Encoder
Remote control transmitter
U2741B
LFGND
LFVCC
UHF ASK/FSK
XTO
GND
VCC
ASK
FSK
CLK
LF
Power
PLL
amp.
VCO
Power
U2741B
OR
up
Antenna Antenna
VCO
f
f
64
n
U3741BM
XTO
PA
LNA
Remote control receiver
Demod.
IF Amp
UHF ASK/FSK
DIVC
PWRSET
PWRVCC
ANT
PWRGND1
PWRGND2
XTO1
XTO2
VCO
PLL
Control
XTO
1...3
4733B–RKE–09/05