ATA8404-6DQY Atmel, ATA8404-6DQY Datasheet - Page 6

• Manufacturer Part Number: ATA8404-6DQY
• Description: IC TRANSMITTR ASK/FSK UHF 10TSSO
• Manufacturer: Atmel

Specifications of ATA8404-6DQY

• Frequency: 313MHz ~ 317MHz
• Applications: Home Automation, Remote Sensing, RKE
• Modulation Or Protocol: ASK, FSK
• Data Rate - Maximum: 40 kBaud
• Power - Output: 4dBm ~ 8dBm
• Current - Transmitting: 8.4mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Voltage - Supply: 2 V ~ 3.6 V
• Operating Temperature: -55°C ~ 85°C
• Package / Case: 10-TSSOP
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Operating Supply Voltage (typ): 2.5/3.3V
• Operating Supply Voltage (max): 3.6V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Memory Size: -
• Lead Free Status / Rohs Status: Compliant

4.1
4.1.1
4.1.2
6
Transmission with ENABLE = open
ATA8404/ATA8405 [Preliminary]
ASK Mode
FSK Mode
The ATA8404/ATA8405 is activated by ENABLE = open, FSK = High, ASK = Low. The micro-
controller is then switched to external clocking. After typically 0.6 ms, the CLK driver is
activated automatically (i.e., the microcontroller waits until the XTO and CLK are ready). After
another time period of 250 µs, the PLL is locked and ready to transmit. The output power can
then be modulated by means of pin ASK. After transmission, ASK is switched to Low and the
microcontroller returns back to internal clocking. Then, the ATA8404/ATA8405 is switched to
power-down mode with FSK = Low.
Figure 4-1.
The ATA8404/ATA8405 is activated by FSK = High, ASK = Low. The microcontroller is then
switched to external clocking. After typically 0.6 ms, the CLK driver is activated automatically
(i.e., the microcontroller waits until the XTO and CLK are ready. After another time period of
ASK = H. The ATA8404/ATA8405 is then ready for FSK modulation. The microcontroller starts
to switch on and off the capacitor between the crystal load capacitor and GND by means of pin
FSK, thus, changing the reference frequency of the PLL. IF FSK = L the output frequency is
lower; if FSK = H the output frequency is higher. After transmission, FSK stays High and ASK
is switched to Low and the microcontroller returns back to internal clocking. Then, the
ATA8404/ATA8405 is switched to power-down mode with FSK = Low.
Figure 4-2.
250 µs, the PLL is locked and ready to transmit. The power amplifier is switched on with
FSK
ASK
CLK
FSK
ASK
CLK
Timing ASK Mode with ENABLE not Connected to the Microcontroller
Timing FSK Mode with ENABLE not Connected to the Microcontroller
Power-down
Power-down
T
T
XTO
XTO
Power-up,
Power-up,
PA off
PA off
> 250 µs
> 250 µs
(f
Power-up,
Power-up,
RF
PA on
(High)
PA on
= High)
(f
Power-up,
Power-up,
RF
PA off
PA off
(Low)
= Low)
Power-down
Power-down
9136C–INDCO–10/09