Voltage Controlled Oscillator - VCO
RQS-Series
Features
Applications
ꢀ Frequency Range up to 3.5 GHz ꢀ Wireless Networks
ꢀ Compatible to Murata MQE-series ꢀ Cordless Phones
ꢀ Low Profile, 1.9 mm
ꢀ Low Power Consumption
ꢀ Telecommunications
ꢀ Navigation
Description
The RQS-series is ideally suited for cost-sensitive applications. With its small dimensions
and low power consumption, the RQS-series meets the requirements of portable and
wireless applications. A high degree of process-automation ensures consistent
performance at high volume and lowest cost.
Mechanical Specification
TOP VIEW
SIDE VIEW
BOTTOM VIEW
SOLDER PATTERN
COMMENTS
Pad / Functions:
No Industry-standard is
established for numbering
scheme of 6x8 package.
(2001/2002)
Height “H” (max):
1.9 mm / .075”
Outline Tolerances:
±0.20mm / ±.008”
Electrical Specification
PARAMETER
Max Frequency
Tuning Ratio
COMMENTS, EXAMPLES
SYMBOL
fo
f-up : f-low
Vt
Vcc
Icc
Pout
a(2fo)
df/dVcc
df/dZL
MIN
TYP
MAX UNIT
2500 MHz
Currently available in RQS-package
Ratio of upper-to-lower freq (2 = “Octave-VCO”)
Range is typ. 2V for battery-operated applications
Mobile devices typ. operated at 2.7V and up
Dependent on Frequency and Output Power
Output Power Tolerance is typically ±3dB
1.1
0~5
3.3
15
0
-10
5
5
2.0
-
Tuning Voltage
Supply Voltage
Supply Current
Output Power
0~2
2.7
6
V
V
25
+5
mA
dBm
dBc
MHz/V
MHz
-3
Harmonic Suppression Dependent on Tuning Range and Frequency
Pushing
Pulling
Dependent on Freq, Tuning R., typ 0.5%~1% fo
Dependent on Freq, Output Power and Circuit.
2
2
10
10
General Specification
Phase Noise Examples
SSB Phase Noise
1. Load Impedance is 50 Ohms.
-60
-70
-80
2. Operating temperature range is typically –40°C…+85°C.
3. The package is non-hermetic. Substrate is glass-reinforced laminate, the cover is
folded nickel-silver.
2000MHz @ 2.8V
-90
4. Bypass-capacitors (ceramic) from Vcc to Ground are recommended: 1nF||100pF.
5. Customized specifications may deviate from this General Specification.
-100
-110
-120
-130
-140
-150
-160
6. Phase-noise performance depends on the individual specification. Phase Noise is
strongly dependent on (a) frequency (b) supply voltage and (c) tuning range.
750MHz @ 3.3V
7. The phase noise graph (to right) shows the characteristic of two typical RQS-
VCOs at 0dBm output power, ±1% tuning range and 3.3V / 2.8V supply voltage.
1
10
100
1,000
10,000
Freq-offset [kHz]
© Raltron Electronics Corp.
RQS-GeneralSpec-020710.doc
July 2002
10651 N.W. 19th St. ꢀMiami, Fl. 33172 ꢀUSA ꢀTel +001 305-593-6033 ꢀFax +001 305-594-3973 ꢀvco@raltron.com ꢀwww.raltron.com