u3742bm ATMEL Corporation, u3742bm Datasheet - Page 2

• Manufacturer Part Number: u3742bm
• Description: Uhf Ask/fsk Receiver
• Manufacturer: ATMEL Corporation

Figure 1. System Block Diagram
Figure 2. Block Diagram
2
Keys
1 Li cell
U3742BM
ATARx9x
Encoder
LNAGND
FSK/ASK
MIXVCC
LNA_IN
CDEM
AGND
DGND
AVCC
SENS
RSSI
Remote control transmitter
U2741B
UHF ASK/FSK
XTO
LNA
RSSI
and data filter
Demodulator
FSK/ASK-
Power
PLL
VCO
amp.
4. Order
IF Amp
IF Amp
3 MHz
3 MHz
LPF
LPF
Limiter out
Antenna Antenna
Sensitivity
reduction
Dem_out
f
VCO
U3742BM
64
Standby logic
LNA
Polling circuit
control logic
FE
and
Remote control receiver
Demod.
IF Amp
XTO
UHF ASK/FSK
CLK
50 kΩ
VCO
PLL
V
S
DATA
ENABLE
TEST
MODE
DVCC
LFGND
LFVCC
XTO
LF
Control
XTO
1...3
4735A–RKE–11/03