ATAB5278 Atmel, ATAB5278 Datasheet - Page 5

• Manufacturer Part Number: ATAB5278
• Description: BOARD EVAL LF 125KHZ ANT DVR PSV
• Manufacturer: Atmel
• Series: SmartRF®r
• Type: LF Antenna Driverr

Specifications of ATAB5278

• Contents: Board
• Wireless Frequency: 125 KHz
• Interface Type: Serial
• Modulation: ASK, PSK
• Operating Voltage: 8 V to 15 V
• Antenna: External
• For Use With/related Products: ATA5278
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

3.2
3.2.1
4894B–AUTO–06/06
Antenna Module
Typical Parameters at 125 kHz
The antenna module is matched by capacitor CANT (C1) to resonant frequency
f
Whereas the total antenna quality factor is adjusted by RANT (R1) to typical Q = 25.
Coil Inductance:
Coil Resistance:
Impedance:
Coil Q Factor
Resistor
Total Q Factor
Capacitor
Figure 3-3.
res
= 125 kHz ±3 kHz.
Antenna Module
ATAK5278-82 LF Wake-up Demonstrator
L
R
Z
Q
RANT (R1) = 10 /1W
Q
CANT (C1) = 4.7 nF/600V
C
C
C
C
t
= 25
= 345 [µH] ±5%
= 2.5 [ ]
= 271 [ ]
= 108
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