MC145190 Datasheet, PDF (13/24 Pages) Motorola, Inc – 1.1GHz PLL Frequency Synthesizers

180
170
160
PDout CURRENT SET TO 100%;
PDout VOLTAGE IS FORCED TO ONE–HALF OF VPD.
150
140
130
120
110
100
90
80
70
60
50
40
VPD = 9.5 V
VPD = 8.75 V
30
VPD = 8.0 V
20
0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 2.1 2.2 2.3
Iout, SOURCE CURRENT (mA)
Nominal MC145190 PDout Source Current vs Rx Resistance
100
90
PDout CURRENT SET TO 100%;
80
PDout VOLTAGE IS FORCED TO ONE–HALF OF VPD.
70
60
50
40
30
20
VPD = 5.5 V
VPD = 5.0 V
10
VPD = 4.5 V
0
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 2.1 2.2 2.3
Iout, SOURCE CURRENT (mA)
Nominal MC145191 PDout Source Current vs Rx Resistance
NOTE: The MC145191 is optimized for Rx values in the 18 kΩ to 40 kΩ range. For example, to achieve 0.3 mA of output current,
it is preferable to use a 30–kΩ resistor for Rx and bit settings for 25% (as shown in Table 3).
Figure 14.
MOTOROLA
MC145190•MC145191
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