rf2057 RF Micro Devices, rf2057 Datasheet - Page 6

• Manufacturer Part Number: rf2057
• Description: High Performance Wideband Rf Pll/vco With Integrated Rf Mixers For Repeaters
• Manufacturer: RF Micro Devices

RF2057
Typical Performance Characteristics: Synthesizer and VCO - V
for application schematic see page 35. Phase Detector Frequency=26MHz, Loop Bandwidth=60kHz.
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(dBc/Hz)
(dBc/Hz)
Setting
CT_CAL
Phase
Phase
Noise
Noise
-100
-120
-140
-160
-100
-120
-140
-160
120
100
-20
-40
-60
-80
-60
-80
80
60
40
20
0
1800
VCO1 Centre Frequency versus CT_CAL Setting
1
1
1900
VCO1 Open Loop Phase Noise
VCO1 With Active Loop Filter
10
10
Synthesizer Phase Noise
2000
Offset Frequency (kHz)
VCO Frequency (MHz)
Offset Frequency (kHz)
and Temperature
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2100
100
100
2200
2300
1000
1000
2000MHz
1000MHz
500MHz
2400MHz
2200MHz
2000MHz
-40DegC
+27DegC
+85DegC
2400
10000
10000
2500
DD
=3V, T
(MHz)
F
VCO
(MHz/V)
Tuning
Gain
2095
2090
2085
2080
2075
2070
2065
2060
2055
2050
2045
(dBc/Hz)
Phase
Noise
A
50
45
40
35
30
25
20
15
10
=25°C, as measured on RF2057 evaluation board,
5
0
1900
0.4
-100
-120
-140
-160
-60
-80
VCO1 Tuning Gain versus Frequency
for the same coarse tune setting
0.6
2000
1
VCO1 F
0.8
2100
VCO1 With Passive Loop Filter
10
Synthesizer Phase Noise
VCO
1.0
F
2200
Offset Frequency (kHz)
VCO
V
versus V
T
(V)
(MHz)
1.2
2300
100
T
1.4
2400
1000
1.6
2500
-40
80
1.8
2000MHz
1000MHz
500MHz
DS091109
10000