GaAs Constant Gamma Hyperabrupt Tuning Varactors MA46410 thru 480 Series V3.00 Case Styles 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 tuning 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 tolerances 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. 30 277 TYPICAL JUNCTION CAPACITANCE vs TUNING VOLTAGE 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 frequency tuning than do conventional hyperabrupt tuning varactors. These varactors are particularly well suited for use in voltage tuned filters, analog phase shifters, and modulator circuits. PACKAGED TUNING VARACTOR EQUIVALENT CIRCUIT TUNING VOLTAGE VR + Ø (VOLTS) 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 Constant Gamma Hyperabrupt Tuning Varactors MA46410 thru 480 Series V3.00 Electrical Specifications at 25°C MA46450 Series Gamma = 1.0 MA46470 Series Voltage6 Reverse = 22 Volts minimum Gamma4 = 0.9 - 1.1, VR = 2 - 20 Volts Junction Capacitance Ratio (CJ2/CJ20) = 5.0 - 8.0 Total2, 3, 5, 7 Capacitance Cases1 @ -4 Volts Style Min./Max. (pF) Model Number 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 Total Capacitance7 Ratio (2/20) Min./Max. 50 MHz Q at -4 VoIts Typical Model Number Case1 Style Total2, 3, 5, 7 Capacitance @ -4 Volts Min./Max. (pF) Total 50 MHz Capacitance7 Q at Ratio (2/20) -4 Volts Min./Max. Minimum MA46450 30 0.5 2.0-3.8 4000 MA46470 30 0.5 2.2/4.1 4000 MA46451 30 0.7 2.9-4.4 4000 MA46471 30 0.7 3.6/5.6 4000 MA46452 30 1.0 3.6-5.2 3000 MA46472 30 1.0 4.8/7.4 3000 MA46454 30 1.5 3.8-5.5 3000 MA46473 30 1.2 4.8/7.4 3000 MA46455 30 1.8 4.1-6.1 3000 MA46474 30 1.5 5.0/7.4 3000 MA46457 30 2.2 4.1-6.1 3000 MA46475 30 1.8 6.6/8.7 3000 MA46459 30 3.3 4.5-6.7 2000 MA46476 30 2.0 6.6/8.7 3000 MA46461 30 4.7 4.8-7.2 1500 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 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 Model Number Case1 Style Total2, 6, 7 Capacitance @ -4 Volts Min./Max. (pF) Total Capacitance7 Ratio (2/12) Min./Max. 50 MHz Q at -4 Volts 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 Absolute Maximum Ratings at +25°C Parameter Absolute Maximum Operating Temperature* -65°C to +175°C Storage Temperature -65°C to +200°C Reverse Voltage 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 (Cp and Ls) are given for most case styles along with case outlines in the appendix. The Cp values listed typically have tolerances of ±0.02 pF. 3. The nominal tolerance at -4 Volts is ± 10%. Closer tolerances are available upon request. By adding the suffix A to the part number, a tolerance 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 values. Environmental Ratings PER MIL-STD-750 Breakdown Voltage * The maximum storage and operating temperature of the plastic 1088 case style is 125°C. MIL Method Storage Temperature 1031 Temperature Cycle 1051 Shock 2016 Vibration 2056 Constant Acceleration 2006 Humidity 1021 Level See maximum ratings 10 cycles, -65°C to +175°C 500 g’s 15 g’s 20,000 g’s 10 days 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 Constant Gamma Hyperabrupt Tuning Varactors MA46410 thru 480 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 GaAs Constant Gamma Hyperabrupt Tuning Varactors MA46410 thru 480 Series V3.00 Typical Performance Curves TOTAL CAPACITANCE vs REVERSE BIAS VOLTAGE (γ = 1.0) (PARTS IN CASE STYLE 30) .1 100 JUNCTION CAPACITANCE vs REVERSE BIAS VOLTAGE (γ = 1.0) (CHIPS) .1 100 VR (VOLTS) VR (VOLTS) TOTAL CAPACITANCE vs REVERSE BIAS VOLTAGE (γ = 1.25) (PARTS IN CASE STYLE 30) .1 100 JUNCTION CAPACITANCE vs REVERSE BIAS VOLTAGE (γ = 1.25) (CHIPS) .1 100 VR (VOLTS) VR (VOLTS) Specifications Subject to Change Without Notice. M/A-COM, Inc. 4 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 Constant Gamma Hyperabrupt Tuning Varactors MA46410 thru 480 Series V3.00 Typical Performance Curves (Cont’d) TOTAL CAPACITANCE vs REVERSE BIAS VOLTAGE (γ = 1.5) (PARTS IN CASE STYLE 30) .1 1 VR (VOLTS) 10 JUNCTION CAPACITANCE vs REVERSE BIAS VOLTAGE (γ = 1.5) (CHIPS) 100 .1 1 VR (VOLTS) 10 100 GAMMA vs VOLTAGE VR (VOLTS) Specifications Subject to Change Without Notice. M/A-COM, Inc. North America: 5 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