SL1935D ETC, SL1935D Datasheet - Page 10

• Manufacturer Part Number: SL1935D
• Description: Single Chip Synthesized Zero IF Tuner
• Manufacturer: ETC

SL1935
10
-70
-72
-74
-76
-78
-80
-82
-84
-86
-88
-90
START 1MHz
START 100kHz
Normalised to 50Ω
Normalised to 50Ω
900
+j0.2
—j0.2
1000
0
Figure 11. Converter output impedance; OFIA, OFIB, OFQA, OFQB (typical)
+j0.2
—j0.2
0
Figure 10. Local oscillator phase noise variation with frequency (typical)
Conditions:
Loop filter as per standard application shown in Figure 21
Charge pump = 130uA
Fcomp = 65.5kHz or 125kHz
0.2
+j0.5
—j0.5
vcos enabled
0.2
+j0.5
—j0.5
Figure 12. Baseband output impedance; IOUT, QOUT (typical)
1100
X
X
1
X
1
2
x
3
X
0.5
4
2
0.5
x
1200
3
x
+j1
1
—j1
+j1
1
—j1
x
1300
2
4
2
5
+j2
—j2
5
—j2
+j2
1400
X
STOP 30MHz
+j5
—j5
+j5
—j5
LO Frequency (MHz)
1500
STOP 30MHz
1600
Marker
Marker
1
2
3
4
1
2
3
4
1700
Freq (MHz)
Freq (MHz)
0.1
10
20
30
10
20
30
vcov enabled
1
1800
Z real Ω
Z real Ω
10.0
10.6
12.6
1900
9.5
17
18
22
33
2000
Z imag Ω
Z imag Ω
-2.0
1.3
3.3
5.5
19
38
60
0
2100