ATA5757 ATMEL Corporation, ATA5757 Datasheet - Page 2

• Manufacturer Part Number: ATA5757
• Description: (ATA5756 / ATA5757) UHF ASK/FSK TRANSMITTER
• Manufacturer: ATMEL Corporation

Pin Configuration
Figure 2. Pinning MSOP10
Pin Description
2
Pin
1
2
3
ATA5756/ATA5757
Symbol
ASK
CLK
FSK
Function
Clock output signal for the
microcontroller.
The clock output frequency is set by the
crystal to f
The CLK output stays Low in power-
down mode and after enabling of the
PLL.
The CLK output switches on if the
oscillation amplitude of the crystal has
reached a certain level.
Switches on the power amplifier for
ASK modulation and enables the PLL
and XTO if the ENABLE pin is open
Switches off the FSK switch (switch has
high Z if signal at pin FSK is High) and
enables the PLL and the XTO if the
ENABLE pin is open
XTAL
/8.
ANT2
ANT1
FSK
ASK
CLK
1
2
3
4
5
ATA5757
ATA5756
10
9
8
7
6
FSK
ASK
ENABLE
GND
VS
XTO1
XTO2
200k
200k
100
100
200k
50k
Configuration
VS
20 µA
200k
CLK
5 µA
V
Ref
4702H–RKE–09/04
V
= 1.1V
Ref
= 1.1V