UMA1022M Datasheet, PDF (7/20 Pages) NXP Semiconductors – Low cost dual frequency synthesizer for radio telephones

Philips Semiconductors
Low cost dual frequency synthesizer for
radio telephones
Table 2 Programming the coefficient REFDIV2 for reference subdivider
dt3 (LSB)
dt2
0
0
1
0
0
1
1
1
0
0
1
0
0
1
1
1
0
0
1
0
0
1
1
1
0
0
1
0
0
1
1
1
dt1
dt0 (MSB)
0
0
0
0
0
0
0
0
1
0
1
0
1
0
1
0
0
1
0
1
0
1
0
1
1
1
1
1
1
1
1
1
Table 3 RF and IF synthesizer nominal charge pump currents (gain)
CPI
SINGLE/DOUBLE
I_CPA (µA)
0
0
470
0
1
840
1
0
1 410
1
1
2 480
Product specification
UMA1022M
REFDIV2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
I_CPB (µA)
470
840
470
840
1998 Dec 09
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