MAMDCC0002-DC000

MADRCC0002 Dual Linear Driver for Vector Modulators Rev. V7 Features • Linearizes M/A-COM’s PIN Diode Vector Modulators Over a 360° Phase Range • Dual Channels Allow One Driver per Vector Modulator • Guaranteed Minimum Output Currents of 20 mA • Operates with a Single Supply Voltage of +5V • Low Quiescent Currents • Single Control Voltage for Each Channel • 6 x 4 mm Chip Scale Package • Test Boards with Vector Modulators are Available • Tape and Reel Packaging Available • PQFN Package Circuit Description: (Reference Figures 1, 2 and 3) Note that this is a dual driver. Only the top circuit will be described, because the bottom circuit is identical. The input divider, R1 and the sum of R2 and R3, sets the overall transfer function of the circuit. To increase the transfer function, decrease the Control Voltage and the value of R1. Temperature compensation is a function of the temperature coefficient of the thermistor, R3, and the ratio of R2 to R3, and can only be optimized once the transfer function and linearity component values have been established. Varying the value of R4 will optimize the linearity of the VVA. One can achieve a more linear transfer function by driving the attenuator over a smaller portion of its dynamic range. Note that when the vector modulators called out in Table 1 are driven with the dual linearizer, both amplitude and phase are affected, which makes it hard to define linearity. The individual transfer function of each voltage variable attenuator in the vector modulator (See Figure 2 for the block diagram) is linearized as a function of voltage. The two VVAs in the block diagram are the quad hybrids that are terminated by two PIN diodes. See Figure 3 for the transfer function of the SA90-0001 vector modulator (phase and attenuation vs. control voltages). Description M/A-COM's MADRCC0002 is a dual, break point free driver that produces a logarithmic output current suitable for linearizing PIN diode based vector modulators. This driver, in conjunction with the external components, as defined in Figure 1, produces a linearized transfer function between the input control voltage of the driver and the attenuation / phase output of the vector modulator. The MADRCC0002 has been optimized for linearizing M/A-COM’s Vector Modulators (see Table 1), but will function well with most types of cathode grounded vector modulators. The driver is packaged in a 6 x 4 mm Chip Scale Package for commercial SMT applications. A typical schematic for a dual linearizer driving a vector modulator is shown in Figure 1. Ordering Information Part Number MADRCC0002 MADRCC0002TR MAMDCC0005-DC000 Package Bulk Packaging Tape & Reel (1K Reel) Test Board with Circuit per Figure 1 (MAMDCC0005, GSM Vector Modulator) Test Board with Circuit per Figure 1 (MAMDCC0002, PCS Vector Modulator) Test Board with Circuit per Figure 1 (SA90-0001, UMTS Vector Modulator MAMDCC0002-DC000 SA90-0001-DC000 Note: Reference Application Note M513 for reel size information. 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: +91.80.4155721 • 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. MADRCC0002 Dual Linear Driver for Vector Modulators Rev. V7 Electrical Specifications: TA = 25°C, Z0 = 50Ω, Reference Figure 1 (Each Circuit) Parameter Output Drive Current +VCC Supply Range IN, REF Voltage +VCC Quiescent Current Settling Time Test Conditions Vcontrol = VCC — — No Load 50% Ctl to 90%/10% RF Units mA V V µA µS Min 20 4.5 0 — — Typ — 5.0 — 50 25 Max — 5.5 VCC 70 — Figure 1 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: +91.80.4155721 • 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. MADRCC0002 Dual Linear Driver for Vector Modulators Rev. V7 Table 1. Inductor Selection for M/A-COM Vector Modulators Vector Modulator MAIA-007099-000100 MAIA-007100-000100 MAIA-007150-000100 Frequency Range (MHz) 925-960 (GSM) 1930-1990 (PCS) 2040-2240 (UMTS) Coil Craft P/N L1 - L4 0603CS-68NXJBC 0603CS-27NXJBC 0603CS-27NXJBC Description of L1 - L4 Inductor, 68 nH, ± 5% Inductor, 27 nH, ± 5% Inductor, 27 nH, ± 5% Resistor Values R2, R6 270 Ohms 360 Ohms 270 Ohms Thermistor Quality Values Thermistor R3, R7 P/N for R3, R7 750 Ohms 680 Ohms 750 Ohms QT0805-751K QT0805-681K QT0805-751K Recommended PCB Configuration 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: +91.80.4155721 • 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. MADRCC0002 Dual Linear Driver for Vector Modulators Rev. V7 Pin Configuration Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Function NC IN B NC REF B NC REF B NC REF B OUT B NC Vcc NC NC OUT A REF A NC Pin No. 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 Function REF A NC REF A NC IN A NC NC NC NC NC NC GND NC NC NC NC Absolute Maximum Ratings 1,2 Parameter +VCC IN A, IN B REF A, REF B Output Short Circuit Duration3 Operating Temperature Storage Temperature Package Power Dissipation Control Voltage Lead Temperature Absolute Maximum +20 V -0.5V < Input < Vcc +0.5V -0.5V < Input < Vcc +0.5V Continuous -40°C to +85°C -65°C to +125°C 150 mW 300ºC for 10 seconds The exposed pad centered on the package bottom must be connected to RF and DC ground. (For PQFN Packages) Handling Procedures Please observe the following precautions to avoid damage: 1. Exceeding any one or combination of these limits may cause permanent damage to this device. 2. M/A-COM does not recommend sustained operation near these survivability limits. 3. Additional heat sinking may be required for a continuous output short circuit to ground, to keep the junction temperature of the amplifier below 150°C. Static Sensitivity Silicon Integrated Circuits are sensitive to electrostatic discharge (ESD) and can be damaged by static electricity. Proper ESD control techniques should be used when handling these devices. 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: +91.80.4155721 • 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. MADRCC0002 Dual Linear Driver for Vector Modulators Rev. V7 4x6 mm, 32-lead PQFN† † Reference Application Note M538 for lead-free solder reflow recommendations. 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: +91.80.4155721 • 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. MADRCC0002 Dual Linear Driver for Vector Modulators Rev. V7 Figure 3A - Phase and Attenuation of SA90-0001, Vector Modulator Linearized with MADRCC0002 Linearizer 3,4,5,6 (y) 90° 45° bias 1 = 0.0V 0.5V 1.0V bias 2 = 5.0V 3.5V 3.0V 2.5V 2.0V 1.5V 1.0V 0.5V bias 2 = 0.0V (x) 0° 1.5V 2.0V 2.5V 3.0V 3.5V bias 1 = 5.0V Figure 3B bias 1 = 0V bias 2 = +5V bias 1 = 0V bias 2 = 0V (y) 90° 45° Loss = 22 dB Loss = 17 dB Loss = 12 dB (x) 0° bias 1 = +5V bias 2 = +5V bias 1 = +5V bias 2 = 0V Reflection coefficient = 0.5 3. 4. 5. 6. 6 Tic marks on x,y axes refer to reflection coefficient in increments of 0.1V. Reflection coefficients vary from -0.5 to +0.5 on both the x and y axes. Data is for vector modulators driven by linearizers per attached schematic. Inputs to the linearizers vary from 0 to 5V. The phase with the inputs to both linearizers set to +5V is arbitrarily called zero degrees. 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: +91.80.4155721 • 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. MADRCC0002 Dual Linear Driver for Vector Modulators Rev. V7 Figure 2—Block Diagram Vector Modulator 7 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: +91.80.4155721 • 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.