U2741B_05 ATMEL [ATMEL Corporation], U2741B_05 Datasheet - Page 6

• Manufacturer Part Number: U2741B_05
• Description: UHF ASK/FSK TRANSMITTER
• Manufacturer: ATMEL [ATMEL Corporation]

Figure 5-2.
6
U2741B
Application Circuit
3.39 MHz
ASK
CLK
FSK
C
7
C
6
R
4
C
C
2
LFGND
LFVCC
1
GND
VCC
ASK
CLK
FSK
LF
1
2
3
4
5
6
7
8
U2741B
Power
OR
up
VCO
f
f
64
n
XTO
PA
16
15
14
13
12
11
10
DIVC
PWRSET
PWRVCC
ANT
PWRGND1
PWRGND2
XTO1
XTO2
9
+V
S
= 2.0 ... 5.5 V
Antenna
R
13.56 MHz
PWRSET
C
C
3
5
C
L
C
Feed
4
Loop1
C
Loop2
4733B–RKE–09/05