u3741bm ATMEL Corporation, u3741bm Datasheet - Page 2

• Manufacturer Part Number: u3741bm
• Description: Uhf Ask Receiver Ic
• Manufacturer: ATMEL Corporation

System Block Diagram
Block Diagram
2
Keys
1 Li cell
U3741BM
ATARx9x
Encoder
LNAGND
FSK/ASK
MIXVCC
LNA_IN
CDEM
AGND
DGND
AVCC
SENS
Remote control transmitter
U2741B
XTO
UHF ASK/FSK
LNA
RSSI
Power
VCO
amp.
PLL
and data filter
Demodulator
FSK/ASK-
4
IF Amp
IF Amp
th
3 MHz
3 MHz
LPF
LPF
Order
Antenna
Limiter out
Sensitivity
reduction
DEMOD_OUT
Antenna
f
VCO
U3741BM
÷ 64
Standby logic
LNA
Polling circuit
control logic
FE
Remote control receiver
and
Demod
UHF ASK/FSK
XTO
CLK
50 kΩ
VCO
PLL
V
S
DATA
ENABLE
TEST
POUT
MODE
DVCC
LFGND
LFVCC
XTO
LF
Control
XTO
1...3
µC
4662B–RKE–10/04