U3742BM-M3FL ATMEL [ATMEL Corporation], U3742BM-M3FL Datasheet - Page 2
U3742BM-M3FL
Manufacturer Part Number
U3742BM-M3FL
Description
UHF ASK/FSK RECEIVER
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.U3742BM-M3FL.pdf
(32 pages)
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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
Dem_out
Sensitivity
reduction
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 k
VCO
PLL
V
S
DATA
ENABLE
TEST
MODE
DVCC
LFGND
LFVCC
XTO
LF
Control
XTO
1...3
4735A–RKE–11/03
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