Voltage Controlled Oscillator - VCO
RQC-Series
Raltron Electronics Corp.
RQC-GeneralSpec-020228.doc
J. Muenzing
10651 N.W. 19
th
St.
!
Miami, Fl. 33172
!
USA
!
Tel +001 305-593-6033
!
Fax +001 305-594-3973
!
vco@raltron.com
!
www.raltron.com
Features
Applications
!
Frequency up to 2 GHz
!
Low Phase Noise
!
Modulation Input available
!
Base Stations
!
Analog and Digital Radio
!
Instrumentation
Description
The RQC-type is a general purpose VCO. Components are selected for high-Q and tight
tolerances.
Raltron's RQC-series is developed and manufactured in its ISO9000 certified facility in
Miami. RF-simulation (CAE), automated test-equipment (Agilent VCO/PLL-Analyzer) and
statistical process control (SPC) are integral part of R&D and manufacturing which ensure minimal process variances and a
high degree of repeatability.
Mechanical Specification
TOP
SIDE
BOTTOM
SOLDER PATTERN
COMMENTS
Pad / Functions:
[1] Tuning Voltage
[3] Supply Voltage
[4] RF-Output
[2,5] Ground
[6] Modulation or Gnd
Height "H" (max):
4.20mm / .165"
Outline Tolerances:
0.20mm / .008"
Electrical Specification
PARAMETER COMMENTS,
EXAMPLES
SYMBOL
MIN
TYP
MAX
UNIT
Max Frequency
Currently available in RQR-package
fo
2000 MHz
Tuning Ratio
Ratio of upper-to-lower freq (2 = "Octave-VCO")
f-up : f-low
1.1
1.5
-
Tuning Voltage
Battery operated 2V, Stationary: 5V or higher
Vt
0~2
0~5
0~25 V
Supply Voltage
Battery operated 3.3V to 5V, Stationary up to 12V
Vcc
3.3
5
12
V
Supply Current
Dependent on Frequency and Output Power
Icc
10
20
30
mA
Output Power
Output Power Tolerance is typ. 3dB (min. 1dB)
Pout
-3
+3
+10
dBm
Harmonic Suppression
Dependent on Tuning Range and Freq
a(2fo)
-20
dBc
Pushing
Dependent on Freq, Tuning R., typ 0.1%~0.5% fo
df/dVcc
1
MHz/V
Pulling
Dependent on Freq, Output Power and Circuit.
df/dZL
3
MHz
General Specification
Phase Noise
1. Load Impedance is 50 Ohms.
2. Operating temperature range is typically 40C...+85C.
3. The package is non-hermetic. Substrate is glass-reinforced laminate, cover is
folded nickel-silver.
4. Bypass-capacitors (ceramic) from Vcc to Ground are recommended: 1nF||100pF.
5. Customized specifications may deviate from this General Specification.
6. Phase-noise performance depends on the individual specification. Phase Noise is
strongly dependent on (a) frequency (b) supply voltage and (c) tuning range.
7. The phase noise graph (to right) shows the characteristic of 2 typical RQC-VCOs.
Samples are measured at 5V supply and have 3dBm output power and 1% tuning
range.
SSB Phase Noise
(see Note 7)
-150
-140
-130
-120
-110
-100
-90
-80
-70
1
10
100
1,000
10,000
Freq. Offset [kHz]
L(f) [dBc/Hz]
1000 MHz 1%
400 MHz 1%
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