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NRF401 PDF预览

NRF401

更新时间: 2022-11-26 05:42:03
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18页 275K
描述
433MHz Single Chip RF Transceiver

NRF401 数据手册

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PRODUCT SPECIFICATION  
nRF401 Single Chip RF Transceiver  
An additional notch filter (L and C) at the 50W RF input/output may be necessary  
dependent on the application requirements (see application note nAN400-05).  
A single ended antenna may also be connected to nRF401 using an 8:1 impedance RF  
transformer. The RF transformer must have a centre tap at the primary side for VDD  
supply.  
RF output power  
The external bias resistor R3 connected between the RF_PWR pin and VSS sets the  
output power. The RF output power may be set to levels up to +10dBm. In Figure 8  
the output power is plotted for power levels down to, but not limited to, -8.5dBm for a  
differential load of 400W. DC power supply current versus external bias resistor value  
is shown in Figure 9.  
RF Output Power  
10  
22  
8
6
27  
33  
39  
4
47  
2
56  
0
68  
82  
-2  
-4  
-6  
-8  
-10  
100  
120  
150  
180  
180  
0
20  
40  
60  
80  
100  
120  
140  
160  
200  
W
Resistor Value [k  
]
Figure 8. RF output power vs. external power setting resistor (R3) for nRF401.  
Total Chip Current  
30,0  
22  
25,0  
27  
20,0  
33  
39  
47  
15,0  
56  
68  
82  
100  
10,0  
5,0  
120  
150  
180  
0,0  
0
20  
40  
60  
80  
100  
120  
140  
160  
180  
200  
Resistor Value [k  
]
W
Figure 9. Total chip current consumption vs. external power setting resistor (R3) for  
nRF401.  
Nordic VLSI ASA  
Revision: 1.5  
-
Vestre Rosten 81, N-7075 Tiller, Norway  
-
Phone +4772898900  
-
Fax +4772898989  
May 2000  
Page 8 of 18  

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