RQS Datasheet, PDF (1/1 Pages) Recom International Power – 0.25 Watt SMD Single & Dual Output

Voltage Controlled Oscillator - VCO
RQS-Series
Features
! Frequency Range up to 3.5 GHz
! Compatible to Murata MQE-series
! Low Profile, 1.9 mm
! Low Power Consumption
Applications
! Wireless Networks
! Cordless Phones
! 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
COMMENTS, EXAMPLES
SYMBOL MIN TYP MAX UNIT
Max Frequency
Currently available in RQS-package
fo
2500 MHz
Tuning Ratio
Ratio of upper-to-lower freq (2 = “Octave-VCO”) f-up : f-low
1.1 2.0 -
Tuning Voltage
Range is typ. 2V for battery-operated applications Vt
0~2 0~5
V
Supply Voltage
Mobile devices typ. operated at 2.7V and up
Vcc
2.7 3.3
V
Supply Current
Dependent on Frequency and Output Power
Icc
6
15
25 mA
Output Power
Output Power Tolerance is typically ±3dB
Pout
-3
0
+5 dBm
Harmonic Suppression Dependent on Tuning Range and Frequency
a(2fo)
-10
dBc
Pushing
Dependent on Freq, Tuning R., typ 0.5%~1% fo df/dVcc
2
5
10 MHz/V
Pulling
Dependent on Freq, Output Power and Circuit.
df/dZL
2
5
10 MHz
General Specification
1. Load Impedance is 50 Ohms.
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.
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 two typical RQS-
VCOs at 0dBm output power, ±1% tuning range and 3.3V / 2.8V supply voltage.
Phase Noise Examples
SSB Phase Noise
-60
-70
-80
-90
2000MHz @ 2.8V
-100
-110
-120
-130
-140
-150
750MHz @ 3.3V
-160
1
10
100 1,000 10,000
Freq-offset [kHz]
© Raltron Electronics Corp.
RQS-GeneralSpec-020710.doc
July 2002
10651 N.W. 19^th St. ! Miami, Fl. 33172 ! USA ! Tel [phone] ! Fax [phone] ! [e-mail] ! www.raltron.com