ATAB5278 Atmel, ATAB5278 Datasheet - Page 8

• 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

3.3
8
Receiver Board ATAB5282
ATAK5278-82 LF Wake-up Demonstrator
In addition to the three-channel LF receiver IC, the board is equipped with a 3D antenna (Pre-
dan). The antenna has a sensitivity in all directions of approximately 100 mV/Am. Reaching a
bandwidth of 4 kbits/s, the antenna Q factor is adjusted by parallel resistors to about 25. Using
the total receiver sensitivity and sending the maximal transmitter current of 1A
tance of at least 2 meters can be achieved in all directions. The board also allows for an optional
assembly of separate antenna coils for x, y, z field detection. An LED is used to indicate the
received data protocol. Test points and a pin socket allow the measurement of the relevant sig-
nals. A 3V lithium battery is used, supplying the receiver with LED indication.
Figure 3-5.
Figure 3-6.
L1
L2
L3
R1
R2
R3
Receiver Board ATAB5282 V.4
Schematic of Receiver Board ATAB5282 V.4
C1a
C2a
C3a
C2b
C1b
C3b
COIL2
COIL3
COIL1
1
2
3
4
COIL1
COIL2
COIL3
VSS
ATA5282
TSSOP8
NWAKE/
DATA
NSCL
VDD
TC
8
7
6
5
R4/1+ R4/2
C4
R9
NWAKE
NSCL
R5
GND
VS
R6
T1
R8
R7
GND
6
1
VS
LD1
p
2
C6
NC
5
NC
, a wake-up dis-
4894B–AUTO–06/06
4
3
NWAKE
NSCL
Lith
3V
VS