MA46452-277 - M/A-COM Technology Solutions, Inc.

M/A-COM, Inc.

Nor th America: Tel. (800) 366-2266 ■Asia/Pacific: Tel. +81 (03) 3226-1671 ■Europe: Tel. +44 (1344) 869 595

Fax (800) 618-8883 Fax +81 (03) 3226-1451 Fax +44 (1344) 300 020

Specifications Subject to Change Without Notice.

V3.00

GaAs Constant Gamma

Hyperabrupt Tuning V aractors MA46410 thru 480 Series

Features

●Constant Gamma = 1.0, 1.25 or 1.5

●High Q (up to 4000 at -4 Volts)

●Larger Capacitance Change with Voltage

●More Linear Frequency Tuning

●High and Nearly Constant Modulation Sensitivity

Description

The MA46450, MA46470 and MA46410 series of tuning

varactors are hyperabrupt junction Gallium Arsenide

diodes featuring constant gamma 1.0 (MA46450 series),

1.25 (MA46470 series) or 1.5 (MA46410 series). These

diodes offer high Q (up to 4000) permitting excellent tun-

ing performance from VHF through Ka band. Each part in

this series exhibits the large change in capacitance versus

bias voltage characteristic of hyperabrupt junctions. The

standard capacitance tolerance is ±10%, with tighter toler-

ances available. Capacitance matching at one or more bias

voltages is also available. All diode types are available in

a wide selection of ceramic packages and in chip form.

Applications

The constant gamma value of 1.0, 1.25 or 1.5 available

with these diodes enables the circuit designer to produce

significant improvements in circuit performance. Constant

gamma tuning varactors permit more linear VCO frequen-

cy tuning than do conventional hyperabrupt tuning varac-

tors. These varactors are particularly well suited for use in

voltage tuned filters, analog phase shifters, and modulator

circuits.

Case Styles

277

PACKAGED TUNING VARACTOR EQUIVALENT CIRCUIT

TYPICAL JUNCTION CAPACITANCE vs TUNING VOLTAGE

TUNING V OL TA GE VR+ Ø (VOLTS)

M/A-COM, Inc.

Nor th America: Tel. (800) 366-2266 ■Asia/Pacific: Tel. +81 (03) 3226-1671 ■Europe: Tel. +44 (1344) 869 595

Fax (800) 618-8883 Fax +81 (03) 3226-1451 Fax +44 (1344) 300 020

2Specifications Subject to Change Without Notice.

V3.00

* The maximum storage and operating temperature of the plastic

1088 case style is 125°C.

Absolute Maximum Ratings at +25°C

GaAs Constant Gamma Hyperabrupt Tuning Varactors MA46410 thru 480 Series

Electrical Specifications at 25°C

MA46450 Series Gamma = 1.0

Rev erse Voltage6= 22 Volts minimum

Gamma4= 0.9 - 1.1, VR= 2 - 20 Volts

Junction Capacitance Ratio (CJ2/CJ20) = 5.0 - 8.0

MA46470 Series Gamma = 1.25

Reverse Voltage6= 22 Volts minimum

Gamma4= 1.13 - 1.38, VR= 2 - 20 Volts

Junction Capacitance Ratio (CJ2/CJ20) = 8.15 - 12.99

Notes:

1. All GaAs tuning varactors are available in chip form as well as the case

styles shown on the following page.When ordering, specify the desired

case by adding the case designation as a suffix to the type number.

2. Case parasitics (Cpand Ls) are given for most case styles along with

case outlines in the appendix.The Cp values listed typically have toler-

ances of ±0.02 pF.

3. The nominal tolerance at -4 Volts is ± 10%. Closer tolerances are avail-

able upon request. By adding the suffix A to the part number, a toler-

ance of ± 5% at -4 Volts is guaranteed.

4. The values guaranteed for gamma are measured on unpackaged

chips.The total capacitance versus bias voltage curve will deviate

slightly from the chip capacitance versus bias voltage curve due to the

package parasitic capacitance (Cp).

5. Capacitance is measured at 1 MHz.

6. Reverse voltage (VB) is measured at 10 microamps.

7. The total capacitance and capacitance ratios shown are for diodes

housed in case style 30. Other case styles will result in different val-

ues.

Total2, 3, 5, 7 Total 50 MHz

Capacitance Capacitance7Q at

Model Cases1@ -4 Volts Ratio (2/20) -4 VoIts

Number Style Min./Max. (pF) Min./Max. Typical

MA46450 30 0.5 2.0-3.8 4000

MA46451 30 0.7 2.9-4.4 4000

MA46452 30 1.0 3.6-5.2 3000

MA46454 30 1.5 3.8-5.5 3000

MA46455 30 1.8 4.1-6.1 3000

MA46457 30 2.2 4.1-6.1 3000

MA46459 30 3.3 4.5-6.7 2000

MA46461 30 4.7 4.8-7.2 1500

Total2, 6, 7 Total 50 MHz

Capacitance Capacitance7Q at

Model Case1@ -4 Volts Ratio (2/12) -4 Volts

Number Style Min./Max. (pF) Min./Max. Typical

MA46410 30 0.45-0.60 2.7-4.3 3000

MA46413 30 0.90-1.10 4.2-5.7 2500

MA46416 30 1.62-1.98 5.2-4.9 2500

MA46418 30 2.42-2.97 5.7-7.6 1800

MA46420 30 3.33-4.22 6.0-8.1 1800

MA46421 30 4.22-5.17 6.2-8.3 1200

MA46422 30 5.04-6.16 6.3-8.4 1200

MA46425 30 9.00-11.00 6.6-8.8 1200

Total2, 3, 5, 7 Total 50 MHz

Capacitance Capacitance7Q at

Model Case1@ -4 Volts Ratio (2/20) -4 Volts

Number Style Min./Max. (pF) Min./Max. Minimum

MA46470 30 0.5 2.2/4.1 4000

MA46471 30 0.7 3.6/5.6 4000

MA46472 30 1.0 4.8/7.4 3000

MA46473 30 1.2 4.8/7.4 3000

MA46474 30 1.5 5.0/7.4 3000

MA46475 30 1.8 6.6/8.7 3000

MA46476 30 2.0 6.6/8.7 3000

MA46477 30 2.2 6.6/8.7 3000

MA46478 30 2.7 6.4/10.0 2000

MA46479 30 3.3 6.4/10.0 2000

MA46480 30 3.7 6.8/11.0 2000

MA46481 30 4.7 6.9/11.1 1500

MA46482 30 5.6 7.2/11.5 1500

MA46483 30 6.8 7.2/11.5 1500

MA46484 30 8.2 7.2/11.5 1500

MA46485 30 10.0 7.5/12.0 1500

Parameter Absolute Maximum

Operating T emperature* -65°C to +175°C

Storage T emperature -65°C to +200°C

Rever se V oltage Breakdown Voltage Environmental Ratings PER MIL-STD-750

MIL Method Level

Storage Temperature 1031 See maximum ratings

Temperature Cycle 1051 10 cycles, -65°C to +175°C

Shock 2016 500 g’s

Vibration 2056 15 g’s

Constant Acceleration 2006 20,000 g’s

Humidity 1021 10 days

MA46410 Series Gamma = 1.5

Breakdown Voltage6= 18 Volts minimum

Gamma4= 1.4 - 1.6, VR= 2 - 12 Volts

Junction Capacitance Ratio (CJ2/CJ12) = 6.2 - 10.84

M/A-COM, Inc.

Nor th America: Tel. (800) 366-2266 ■Asia/Pacific: Tel. +81 (03) 3226-1671 ■Europe: Tel. +44 (1344) 869 595

Fax (800) 618-8883 Fax +81 (03) 3226-1451 Fax +44 (1344) 300 020

Specifications Subject to Change Without Notice.

V3.00

GaAs Constant Gamma Hyperabrupt Tuning Varactors MA46410 thru 480 Series

Case Styles (See appendix for complete dimensions)

M/A-COM, Inc.

Nor th America: Tel. (800) 366-2266 ■Asia/Pacific: Tel. +81 (03) 3226-1671 ■Europe: Tel. +44 (1344) 869 595

Fax (800) 618-8883 Fax +81 (03) 3226-1451 Fax +44 (1344) 300 020

4Specifications Subject to Change Without Notice.

V3.00

GaAs Constant Gamma Hyperabrupt Tuning Varactors MA46410 thru 480 Series

Typical Performance Curves

TOTAL CAPACITANCE vs REVERSE BIAS VOLTAGE (γ= 1.0)

(PARTS IN CASE STYLE 30) JUNCTION CAPACITANCE vs REVERSE BIAS VOLTAGE (γ= 1.0)

(CHIPS)

TOTAL CAPACITANCE vs REVERSE BIAS VOLTAGE (γ= 1.25)

(PARTS IN CASE STYLE 30) JUNCTION CAPACITANCE vs REVERSE BIAS VOLTAGE (γ= 1.25)

(CHIPS)

.1 100

VR(VOLTS) .1 100

VR(VOLTS)

.1 100

VR(VOLTS)

.1 100

VR(VOLTS)

M/A-COM, Inc.

Nor th America: Tel. (800) 366-2266 ■Asia/Pacific: Tel. +81 (03) 3226-1671 ■Europe: Tel. +44 (1344) 869 595

Fax (800) 618-8883 Fax +81 (03) 3226-1451 Fax +44 (1344) 300 020

Specifications Subject to Change Without Notice.

V3.00

GaAs Constant Gamma Hyperabrupt Tuning Varactors MA46410 thru 480 Series

JUNCTION CAPACITANCE vs REVERSE BIAS VOLTAGE (γ= 1.5)

(CHIPS)

Typical Performance Curves (Cont’d)

TOTAL CAPACITANCE vs REVERSE BIAS VOLTAGE (γ= 1.5)

(PARTS IN CASE STYLE 30)

GAMMA vs VOLTAGE

.1 1 10 100

VR(VOLTS)

.1 1 10 100

VR(VOLTS)