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U2741B Datasheet(PDF) 3 Page - ATMEL Corporation

Part No. U2741B
Description  UHF ASK/FSK TRANSMITTER
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Maker  ATMEL [ATMEL Corporation]
Homepage  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

U2741B Datasheet(HTML) 3 Page - ATMEL Corporation

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U2741B
4733A–RKE–11/03
Pin Configuration
Figure 3. Pinning SSO16
VCC
CLK
GND
LFVCC
LFGND
LF
ASK
FSK
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
PWRVCC
ANT
PWRGND1
PWRGND2
XTO1
XTO2
DIVIC
PWRSET
U2741B
Pin Description
Pin
Symbol
Function
1
ASK
Modulation input ASK
2
FSK
Modulation input FSK
3
VCC
Supply voltage
4
CLK
Clock output
5
GND
Ground
6
LFVCC
Supply voltage VCO
7
LFGND
VCO ground
8
LF
Circuit PLL loop
9
XTO2
FM modulation output
10
XTO1
Connection for crystal
11
PWRGND2
Power GND2
12
PWRGND1
Power GND1
13
ANT
RF output
14
PWRVCC
Supply voltage power amplifier
15
PWRSET
Applied to VCC
16
DIVIC
Pitch factor setting for crystal
L: high crystal frequency
H: low crystal frequency


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