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MA4SW424B-1
SP4T 24GHz PIN Diode Switch with Integrated Bias Network
Features
Frequency of Operation: 24 +/- 2 GHz Fully Integrated Bias Network Low Power Consumption +12mA for Insertion Loss, 0V for Isolation The Device is Wire Bond Compensated at all RF Ports for RF Matching Rugged, Monolithic, Glass Encapsulated Construction RoHS Compliant Rev. V1
Description
The MA4SW424B-1 is a SP4T switch with an integrated bias network which utilizes M/A-COM Technology Solutions HMICTM (Heterolithic Microwave Integrated Circuit) process, US Patent 5,268,310. This process allows the incorporation of silicon pedestals that form series and/or shunt diodes or vias by imbedding them in a low loss, low dispersion glass. By using small spacing between elements, this combination of silicon and glass gives HMIC devices exceptional low loss and high isolation performance with exceptional repeatability through lower millimeter frequencies. Five, 4.5 X 5.5 mil, RF bond pads facilitate the use of low inductance ribbon bonds, while gold backside metallization allows for manual or automatic chip bonding using electrically conductive silver epoxy. Each RF bond pad has an adjacent tuning pad. The user can use bias and add the appropriate wire or ribbon (inductance) to optimize the RF match and performance for the particular frequency of interest.
Gold bond pads are shown here in yellow.
Absolute Maximum Ratings1
Parameter Forward Current Operating Temperature Storage Temperature Junction Temperature RF Incident Power @ +20mA Absolute Maximum +40mA -55C to +125C -55C to +150C +175C 30 dBm
Applications
The MA4SW424B-1 SP4T, switch is designed for 24 GHz automotive switching applications. Insertion loss is achieved with +12 mA @ +4 V and isolation is achieved with 0V D.C. bias. The RF bias network is integrated into the HMIC switch for ease of use and space considerations.
1. Exceeding any of these limits may cause permanent damage to the chip.
1
ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions * North America Tel: 800.366.2266 * Europe Tel: +353.21.244.6400 is considering for development. Performance is based on target specifications, simulated results, * India Tel: +91.80.43537383 * China Tel: +86.21.2407.1588 and/or prototype measurements. Commitment to develop is not guaranteed. Visit www.macomtech.com for additional data sheets and product information. PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology Solutions has under development. Performance is based on engineering tests. Specifications are typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available. M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make Commitment to produce in volume is not guaranteed. changes to the product(s) or information contained herein without notice.
MA4SW424B-1
SP4T 24GHz PIN Diode Switch with Integrated Bias Network
Electrical Specifications for Switch Ports @ TAMB +25C Parameter
Insertion Loss Isolation Input Return Loss Switching Speed
1
Rev. V1
Conditions
24 GHz 24 GHz 24 GHz 24 GHz
Units
dB dB dB nS
Minimum
37 -
Typical
3.0 50 9 200
Maximum
3.5 -
Note 1: Switching speed is measured from 10% to 90% of detected RF signal driven by TTL compatible drivers using an RC spiking network where R = 50 - 200, and C = 390 - 560pF.
Operation of the MA4SW424B-1
Operation of the MA4SW424B-1 series PIN diode switch is achieved by the application of a D.C. current (12mA) to the bias port of the selected insertion loss port and 0V bias for the isolated ports. The control currents should be supplied by constant current sources. D.C Bias Conditions B2 +12mA 0 Volts 0 Volts 0 Volts B3 0 Volts +12mA 0 Volts 0 Volts B4 0 Volts 0 Volts +12mA 0 Volts B5 0 Volts 0 Volts 0 Volts +12mA J1-J2 Low Loss Isolation Isolation Isolation RF Output Conditions J1-J3 Isolation Low Loss Isolation Isolation J1-J4 Isolation Isolation Low Loss Isolation J1-J5 Isolation Isolation Isolation Low Loss
2
ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions * North America Tel: 800.366.2266 * Europe Tel: +353.21.244.6400 is considering for development. Performance is based on target specifications, simulated results, * India Tel: +91.80.43537383 * China Tel: +86.21.2407.1588 and/or prototype measurements. Commitment to develop is not guaranteed. Visit www.macomtech.com for additional data sheets and product information. PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology Solutions has under development. Performance is based on engineering tests. Specifications are typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available. M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make Commitment to produce in volume is not guaranteed. changes to the product(s) or information contained herein without notice.
MA4SW424B-1
SP4T 24GHz PIN Diode Switch with Integrated Bias Network
Typical Performance @ TAMB +25C
Rev. V1
3
ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions * North America Tel: 800.366.2266 * Europe Tel: +353.21.244.6400 is considering for development. Performance is based on target specifications, simulated results, * India Tel: +91.80.43537383 * China Tel: +86.21.2407.1588 and/or prototype measurements. Commitment to develop is not guaranteed. Visit www.macomtech.com for additional data sheets and product information. PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology Solutions has under development. Performance is based on engineering tests. Specifications are typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available. M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make Commitment to produce in volume is not guaranteed. changes to the product(s) or information contained herein without notice.
MA4SW424B-1
SP4T 24GHz PIN Diode Switch with Integrated Bias Network
Typical Performance @ TAMB +25C
Rev. V1
4
ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions * North America Tel: 800.366.2266 * Europe Tel: +353.21.244.6400 is considering for development. Performance is based on target specifications, simulated results, * India Tel: +91.80.43537383 * China Tel: +86.21.2407.1588 and/or prototype measurements. Commitment to develop is not guaranteed. Visit www.macomtech.com for additional data sheets and product information. PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology Solutions has under development. Performance is based on engineering tests. Specifications are typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available. M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make Commitment to produce in volume is not guaranteed. changes to the product(s) or information contained herein without notice.
MA4SW424B-1
SP4T 24GHz PIN Diode Switch with Integrated Bias Network
Rev. V1
Chip Dimensions
H G I H G
A E
F
D
C B
C
Dimension A B C D E F G H I
Mils Min 100 131 61 27 64 91 25 52 19 Max 104 135 62 28 65 92 26 52 20
Millimeters Min Max 2.54 2.64 3.33 3.43 1.55 1.57 0.70 0.72 1.63 1.65 2.31 2.33 0.63 0.65 1.31 1.33 0.48 0.50
Notes: 1. All RF (J) bond pads are 4.5 X 5.5 mils (0.177 X .217 mm). 2. All DC (B) bond pads are 4.0 X 5.5 mils (0.157 X .217 mm). 3. Chip thickness 5 mils (.127 mm)
5
ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions * North America Tel: 800.366.2266 * Europe Tel: +353.21.244.6400 is considering for development. Performance is based on target specifications, simulated results, * India Tel: +91.80.43537383 * China Tel: +86.21.2407.1588 and/or prototype measurements. Commitment to develop is not guaranteed. Visit www.macomtech.com for additional data sheets and product information. PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology Solutions has under development. Performance is based on engineering tests. Specifications are typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available. M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make Commitment to produce in volume is not guaranteed. changes to the product(s) or information contained herein without notice.
MA4SW424B-1
SP4T 24GHz PIN Diode Switch with Integrated Bias Network
Rev. V1
Assembly Considerations
Cleanliness
These chips should be handled in a clean environment free of organic contamination.
Electro-Static Sensitivity
The MA4SW424B-1 PIN diode switch is ESD, Class 1A sensitive (HBM). The proper ESD handling procedures must be followed.
Wire Bonding
Thermo-compression wedge bonding using 0.003" x 0.00025" ribbon or 0.001" diameter gold wire is recommended. A heat stage temperature of 150oC and a force of 18 to 22 grams should be used. If ultrasonic energy is necessary, it should be adjusted to the minimum level required to achieve a good bond. RF bond wires should be kept as short as possible.
Chip Mounting
The HMIC switches have Ti-Pt-Au back metal. They can be die mounted with conductive silver epoxy. Mounting surface must be clean and flat. A minimum amount of epoxy, 1-2 mils thick, should be used to attach chip. A thin epoxy fillet should be visible around the outer perimeter of the chip after placement. Cure epoxy per product instructions. Typically 150C for 1 hour.
Ordering Information
Part Number MA4SW424B-1
Packaging Die in Waffle Pack
6
ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions * North America Tel: 800.366.2266 * Europe Tel: +353.21.244.6400 is considering for development. Performance is based on target specifications, simulated results, * India Tel: +91.80.43537383 * China Tel: +86.21.2407.1588 and/or prototype measurements. Commitment to develop is not guaranteed. Visit www.macomtech.com for additional data sheets and product information. PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology Solutions has under development. Performance is based on engineering tests. Specifications are typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available. M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make Commitment to produce in volume is not guaranteed. changes to the product(s) or information contained herein without notice.

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