ATA5276 ATMEL Corporation, ATA5276 Datasheet - Page 14

• Manufacturer Part Number: ATA5276
• Description: TRANSMITTER IC
• Manufacturer: ATMEL Corporation

11. Application Hints
14
ATA5276
A typical application of ATA5276 is shown in
antenna current can be estimated by the formula:
Here R
resistance in series with the shunt resistance and the internal drain-source-on-resistance of the
NDMOS. The duty cycle DC
of the oscillation period.
The phase difference
and the peak value of the antenna current.
Î
A
=
2
-- -
A
denotes the equivalent series resistance of the driver load, i.e., the external coil series
V
-----------------
DVCC
R
A
sin
A
-- -
2
is measured as the time difference between the point of mass of VDRV
DRV
DC
DRV
is the ratio of the driver high-side on-time with respect to the half
cos
A
Figure 11-1 on page
15. The peak value of the
4909C–AUTO–01/07