MA-COM MA46603

GaAs Abrupt
Tuning Varactors
MA46600 Series
V3.00
Features
●
●
●
Case Styles
Highest Q
Large Capacitance Variation with Voltage
Custom Tailored Designs Available on Request
Description
The MA46600 series of microwave tuning varactors is a
family of abrupt junction gallium arsenide devices featuring Q factors in excess of 8000. This series is specifically
designed for broadband high Q tuning performance (up
to 8000 at -4 volts and 50 MHz) from L through Ka band.
Characteristics such as high reliability, low leakage and
close capacitance tracking between diodes are typical of
these devices. Standard capacitance matching is ± 10%,
but closer matching is available upon request. All diode
types are available in a wide selection of ceramic packages as well as in chip form.
Applications
The MA46600 series of tuning varactors can be used for
both broad and narrow band tuning through Ka-band.
Typical applications include solid state tuning of VCOs
using transistors or Gunns as well as voltage tunable
filters and amplifier circuits. The GaAs abrupt junction
tuning varactors offer the highest Q of any tuning varactors and are utilized in high frequency applications where
Q is premium.
Specifications Subject to Change Without Notice.
M/A-COM, Inc.
North America:
1
Tel. (800) 366-2266
Fax (800) 618-8883
■
Asia/Pacific: Tel. +81 (03) 3226-1671
Fax +81 (03) 3226-1451
■
Europe: Tel. +44 (1344) 869 595
Fax +44 (1344) 300 020
GaAs Abrupt Junction Tuning Varactors
MA46600 Series
V3.00
Electrical Specifications at 25°C
Model
Number
Reverse6
Voltage
(Volts)
CT4
± 10% (pF)
Q @ -4 Volts
(Typical)
Ratio1,2
CT0/CTVB (pF)
(Typical)
MA46600
30
0.3
8000
1.9
MA46601
30
0.4
7500
2.1
MA46602
30
0.5
7000
2.5
MA46603
30
0.6
6500
2.8
MA46604
30
0.8
6000
3.2
MA46605
30
1.0
5700
3.4
MA46607
30
1.5
5000
3.8
MA46609
30
2.2
4000
4.0
Notes:
1. Capacitance is measured at 1 MHz on a bridge which has been balanced with shielded test holders connected in place but open circuited.
2. All GaAs tuning varactors are available in any case style shown in this
bulletin as well as in chip form. When ordering, specify the desired
case by adding the case designation as a suffix to the model number,
i.e., MA46601-30. For example, a MA46601-30 specifies a 30 volt tuning diode in a case style 30 with a CT14 between .36 and .44 pF and a
Q at -4 volts and 50 MHz ≥7500. The capacitance values and capacitance ratios are for case style 30. Other case styles or chips will have
slightly different values.
3. All junctions are abrupt i.e., y = 0.50 ± .03.
4. Total capacitance ratios will vary with case choice due to differences in
case capacitance (Cp). Figure 1 shows the ratio for the 30 case style.
5. Case parasitics (Cp and Ls) are given for most case styles.
6. Breakdown voltage (VB) is specified at -10 µA.
Absolute Maximum Ratings at +25°C
Typical Performance Curve
CAPACITANCE CHANGE RATIOS FOR GaAs
TUNING VARACTORS IN CASE STYLE 30
10
9
8
7
UNPACKAGED CHIP
6
CTO = 4.0pF
5
CTO/CTV (RATIO)
1,2
CTO = 2.0pF
4
CTO = 1.0pF
3
2
Parameter
CTO = 0.5pF
Temperature:
Operating
-65°C to + 175°C
Storage
-65°C to + 200°C
Voltage
1
1
2
See Breakdown Voltage
Power Dissipation
Cj < 1.0 pF max. @ 50 mW
(derate linearly to zero at 200°C)
Cj ≥ 1.0 pF min. @ 100 mW
3
4
6
8 10
20
30
VOLTAGE (VOLTS)
Environmental Ratings
Method
Levels
Temperature, Storage
1031
See Maximum Ratings
Temperature, Cycling
1051
5 cycles, -65 to + 150 C
Shock
2016
500 g’s
Vibration
2056
15 g’s
Constant Acceleration 2006
20,000 g’s
Moisture Resistance
10 days
1021
Specifications Subject to Change Without Notice.
M/A-COM, Inc.
2
North America:
Tel. (800) 366-2266
Fax (800) 618-8883
■
Asia/Pacific: Tel. +81 (03) 3226-1671
Fax +81 (03) 3226-1451
■
Europe: Tel. +44 (1344) 869 595
Fax +44 (1344) 300 020
GaAs Abrupt Junction Tuning Varactors
MA46600 Series
V3.00
Case Styles (See appendix for complete dimensions)
Specifications Subject to Change Without Notice.
M/A-COM, Inc.
North America:
3
Tel. (800) 366-2266
Fax (800) 618-8883
■
Asia/Pacific: Tel. +81 (03) 3226-1671
Fax +81 (03) 3226-1451
■
Europe: Tel. +44 (1344) 869 595
Fax +44 (1344) 300 020