Microsemi Corporation GC15011, GC15010, GC15009, GC15008, GC15007 Datasheet

Tuning Varactors

TOC

FREQUENCY LINEAR TUNING VARACTORS

suitable circuits, with no need for external linearization.

DESCRIPTION

A Frequency Linear Tuning Varactor (FLTVAR)TMis a sili­con epitaxial mesa device, designed to provide wide­band Linear Tuning in VCO and filter applications.

These diodes feature thermal oxide passivation for high
reliability, low leakage current, and very low surface
noise. They offer Q values well above ion-implanted
hyperabrupt diodes.

The specifications below apply to chips, or to chips
mounted on carriers. Although these chips can be pro­vided in any of our standard packages, this is not recom­mended for the lower capacitance diodes, because the
parallel parasitic capacitance of the package degrades
linearity at high bias voltages.

APPLICATIONS

The GC15000 series of frequency-linear tuning varactors
are used in VCO’s, filters, amplifiers and modulators for
wide band tuningthrough Ku band. Thefrequency linear
characteristics allow over one octave linear tuning in

JUNCTIO

MODEL

NUMBER

1

N

CAPACIT

ANCE

(pF)

C

J-4

SENSITIV

2

ITY
TYP

QUALITY
FACTOR

TYP

GC15001 0.7 .08 1500 6:1
GC15002 1.0 .08 1450 6:1
GC15003 2.0 .08 1400 6:1
GC15004 5.0 .08 1300 6:1
GC15005 10.0 .08 900 6:1
GC15014 22.0 .08 600 6:1
GC15015 33.0 .08 475 6:1
GC15016 48.0 .08 400 6:1
GC15006 0.7 .11 900 11:1
GC15007 1.0 .11 875 11:1
GC15008 2.0 .11 850 11:1
GC15009 5.0 .11 825 11:1
GC15010 10.0 .11 800 11:1
GC15011 22.0 .11 600 11:1
GC15012 33.0 .11 475 11:1
GC15013 48.0 .11 400 11:1

TUNING

RATION

3

CJ0/CJV

TYP

The combination of high Q and low surface noise results
in low FM noise in VCO applications. They are particu­larly useful in modulated VCO’s because of their con­stant sensitivity, and high modulation rate capability.

ELECTRICAL SPECIFICATIONS: T

Typical Performance

4

=25°C

A

NOTES:

1. Other capacitance values are available; consult factory.

2. Other S values and tuning ranges can be developed.

3. V=4 V, 50 MHz

4. Sensitivity series, S = .08; V = 15 volts.
Sensitivity series, S = . 11; V = 20 volts.

RATINGS

Minimum Voltage Breakdown: 22 volts at 10µA max
Maximum Leakage Current: 50 nA at 20 volts, 25°C
Capacitance Tolerance: ±10% at -4 volts

1

Operating Temperature: -55ºC to +150ºC
Storage Temperature: -65ºC to +200ºC

SEMICONDUCTOR OPERATION

75 Technology Drive  Lowell, MA 01851  Tel: [phone]  Fax: [phone]

35

Tuning Varactors

TOC

FREQUENCY LINEAR TUNING VARACTORS

Typical Capacitance vs Reverse Voltage

SEMICONDUCTOR OPERATION

75 Technology Drive  Lowell, MA 01851  Tel: [phone]  Fax: [phone]

36

Frequency vs Reverse Voltage

in Single Stage L-C Circuit