NRF2401A Datasheet, PDF (29/38 Pages) List of Unclassifed Manufacturers – Single chip 2.4 GHz Transceiver

PRODUCT SPECIFICATION
nRF2401A Single Chip 2.4 GHz Radio Transceiver
Direct Mode
Direct Mode TX:
t=0
PWR_UP
CS
CE
CLK1
DATA
ANT1/ANT2
Td Tsby2txDM
ToaDM
Tfd
Figure 17 Timing of direct mode TX
In TX direct mode the input data will be sampled by nRF2401A and therefore no
clock is needed. The clock must be stable at low level during transmission due to
noise considerations. The exact delay T_sby2txDM is given by the equation:
T_sby2txDM = 194us + 1/ F_XO ⋅ 14 + 2.25us
The maximum length of a package (ToaDM) over all voltages and temperatures is
4ms. This is limited by frequency drift in the transmitter and is independent of data
rate and frequency channel.
Nordic Semiconductor ASA - Vestre Rosten 81, N-7075 Tiller, Norway - Phone [phone] - Fax [phone]
Revision: 1.0
Page 29 of 38
December 2004