ATA8401-6AQY Atmel, ATA8401-6AQY Datasheet - Page 6

• Manufacturer Part Number: ATA8401-6AQY
• Description: IC XMITTER ASK/FSK UHF 8-TSSOP
• Manufacturer: Atmel

Specifications of ATA8401-6AQY

• Frequency: 310MHz ~ 350MHz
• Applications: Alarm, ISM, Telemetry
• Modulation Or Protocol: UHF, ASK, FSK
• Data Rate - Maximum: 50 kBaud
• Power - Output: 8dBm
• Current - Transmitting: 9mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Voltage - Supply: 2 V ~ 4 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-TSSOP
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Operating Supply Voltage (typ): 2.5/3.3V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Memory Size: -
• Lead Free Status / Rohs Status: Compliant

4.4
6
Application Circuit
Atmel ATA8401
Figure 4-2.
Note:
A value of C
Figure 4-3 on page 7
antenna to the power amplifier where C
(18pF + 27pF in series). For C
tolerance value and to have the possibility of realizing the Z
capacitors.
C
nance loop that suppresses the 1
important. Normally the best suppression is achieved when C
to the pins ANT1 and ANT2.
The loop antenna should not exceed a width of 1.5mm, otherwise the Q-factor of the loop
antenna is too high.
L
the load resonance frequency of the crystal. Normally, a 15pF load-capacitance crystal results
in a value of 12pF.
1
1
, together with the pins of Atmel
([50nH to 100nH) can be printed on PCB. C
For 345MHz C
3
= 68nF/X7R is recommended for the supply-voltage blocking capacitor C
Output Power Measurement at f = 315MHz
2
ANT1
ANT2
has to be changed to 2.7pF
and
Figure 4-4 on page
Z
Lopt
2
V
, two capacitors in series should be used to achieve a better
L
S
1
®
st
ATA8401 and the PCB board wires, forms a series reso-
56nH
3.3pF
harmonic. Therefore, the position of C
1nF
C
C
1
2
1
typically is 22pF/NP0 and C
4
should be selected so that the XTO runs on
8). C
Z = 50
1
and C
1
2
Load,opt
is placed as close as possible
are used to match the loop
Power
meter
50
R
in
using standard valued
2
1
4984D–INDCO–12/10
is 10.8pF/NP0
on the PCB is
3
(see