U3741BM-P2FL Atmel, U3741BM-P2FL Datasheet - Page 2

• Manufacturer Part Number: U3741BM-P2FL
• Description: IC RECEIVER PLL 300KHZ 20-SOIC
• Manufacturer: Atmel

Specifications of U3741BM-P2FL

• Frequency: 300MHz ~ 450MHz
• Sensitivity: -109dBm
• Data Rate - Maximum: 10 kBaud
• Modulation Or Protocol: ASK, FSK
• Applications: RKE, Remote Control Systems
• Current - Receiving: 8.2mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 20-SOIC (0.300", 7.50mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Features: -
• Memory Size: -

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 k
VCO
PLL
V
S
DATA
ENABLE
TEST
POUT
MODE
DVCC
LFGND
LFVCC
XTO
LF
Control
XTO
1...3
µC
4662B–RKE–10/04