ATAB-LFMB-78 Atmel, ATAB-LFMB-78 Datasheet - Page 17

• Manufacturer Part Number: ATAB-LFMB-78
• Description: MAINBOARD LF W/AVR FOR ATA5278
• Manufacturer: Atmel
• Series: Smart RFr
• Type: LF Mainboardr

Specifications of ATAB-LFMB-78

• Frequency: 125kHz
• For Use With/related Products: ATA5278
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: ATAB-LFMB78

6.3
Figure 6-5.
4894B–AUTO–06/06
QSC Feature Measurement at ATAB5278 Board
Sent Data Without QSC
Data transmission without QSC function can be performed by shorting QSC transistor T1 (con-
nect TP2 with x3_2). Due to the antenna’s Q factor, the current and voltage signals do not reach
final pulse level of protocol data
nal slope and the smaller the reachable signal data rate.
When QSC feature is enabled, transistor T1 switches off the resonating antenna at maximum
peak voltage. Hence, energy remains stored in the resonant capacitor. After switch on, the
antenna field jumps up immediately
able signal data rate is not affected by the antenna Q factor.
ATAK5278-82 LF Wake-up Demonstrator
(Figure
(Figure 6-6 on page
6-5). The higher the antenna Q factor, the flatter the sig-
18). Using the QSC feature the achiev-
17