ATAB5276 Atmel, ATAB5276 Datasheet - Page 14

• Manufacturer Part Number: ATAB5276
• Description: BOARD DEV ANT DRVR TPM ATA5276
• Manufacturer: Atmel
• Series: SmartRF®r
• Type: LF Antenna Driverr

Specifications of ATAB5276

• Contents: Board
• For Use With/related Products: ATA5276
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

6.2
6.3
14
Error Diagnosis
Antenna Current Measurements
ATAK5276-83
Several parameters are monitored by the IC, such as undervoltage, overtemperature, antenna
frequency range, and antenna current. The acknowledge bit is returned by the IC after the
pattern has been sent.
The status of the acknowledge is displayed by the program. It displays Ack O.K. if no error is
detected, and Ack Error if a failure has occurred (see
Using the demonstrator system antenna, current undervoltage monitoring can be easily per-
formed, for example:
In both cases the Ack Error message is displayed after pressing send.
Figure 6-5.
Using the standard antenna module, the maximum antenna current measures about 0.6 Ap
at 12V operating voltage (see
b e c a u s e t h e c u r r e n t d o e s n o t r e a c h t h e s e t p o i n t o f 1 . 5 A p d e t e r m i n e d b y
RCR = RCR1//RCR2 = 25 k .
Figure 6-6.
• Turn the voltage of the power source below 6.5V
• Short or open the antenna module via the plug
Acknowledge Status
Antenna Current out of Regulation
Figure
6-6). At this antenna current, the IC is out of regulation
Figure
6-5).
4857C–AUTO–07/06