U2741B_05 Datasheet, PDF (3/11 Pages) ATMEL Corporation – UHF ASK/FSK TRANSMITTER

2. Pin Configuration
Figure 2-1. Pinning SSO16
ASK 1
FSK ₂
VCC 3
CLK 4
GND ₅
LFVCC 6
LFGND ₇
LF ₈
U2741B
16 ^DIVIC
15 ^PWRSET
14 ^PWRVCC
13 ^ANT
12 ^PWRGND1
11 ^PWRGND2
10 ^XTO1
9 ^XTO2
Table 2-1.
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Pin Description
Symbol
Function
ASK
Modulation input ASK
FSK
Modulation input FSK
VCC
Supply voltage
CLK
Clock output
GND
Ground
LFVCC
Supply voltage VCO
LFGND
VCO ground
LF
Circuit PLL loop
XTO2
FM modulation output
XTO1
Connection for crystal
PWRGND2 Power GND2
PWRGND1 Power GND1
ANT
RF output
PWRVCC Supply voltage power amplifier
PWRSET Applied to VCC
DIVIC
Pitch factor setting for crystal
L: high crystal frequency
H: low crystal frequency
4733B–RKE–09/05
U2741B
3