DR65-0002 MA-COM | Alldatasheet

Document overview

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Technical content

Features

  • Linearizes PIN Diode Attenuators Over a Wide Attenuation Range
  • Output Currents up to 12 mA
  • Operates with a Single Supply Voltage of +3V to +12V
  • Low Quiescent Currents
  • Single Control Voltage
  • Test Boards are Available
  • Tape and Reel Packaging Available
  • SOW-16 Package

Description

M/A-COM's DR65-0002 is a break point free driver that produces a logarithmi c output current suitable for linearizing PIN diode based shunt attenuators. This driver, in conjunction with customer defined external components, produces a linear transfer function (dB/V) between the input control voltage of the driver and the att enuation output of the PIN attenuator. The DR65-0002 has been optimized for linearizing M/A-COM’s AT10-0009 or AT10-0017 attenuators, but will function well with most types of cathode grounded, PIN att enuators. The driver is packaged in a SOW-16 package for commercial SMT applications. A typical schematic for a 30 dB, 7.5 dB/V linear attenuator is shown in Figure 1.

Ordering Information

DR65-0002TR 1000 piece reel DR65-0002-TBG Test Board with Circuit per Figure 1 (AT10-0009, GSM Attenuator) DR65-0002-TBP Test Board with Circuit per Figure 1 (AT10-0017, PCS Attenuator) Note: Reference Application Note M513 for reel size information. Circuit Description: (Reference Figures 1 and 2) 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. Varying the value of R4 will optimize the linearity of the circuit. One can achieve a very linear transfer function (less than ± 1 dB/V) by driving the attenuator over a smaller portion of its dynamic range. In the case of the AT10-0009 and AT10-0017 attenuators, this would be limited to a dynamic range of 28 and 25 dB, respectively. Temperature compensation is a function 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. Pin Configuration Pin No. Function Pin No. Function

1 N/C 9 N/C

2 N/C 10 N/C

3 REF 11 N/C

4 INPUT + 12 OUTPUT

5 GND 13 N/C

6 N/C 14 + VCC

7 N/C 15 N/C

8 N/C 16 N/C

Visit www.macomtech.com for additional data sheets and product information. M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. Linear Driver for PIN Diode Attenuators Rev. V5 DR65-0002 ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions is considering for development. Performance is based on target specifications, simulated results, and/or prototype measurements. Commitment to develop is not guaranteed. 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. Commitment to produce in volume is not guaranteed. Electrical Specifications: TA = 25°C, Z0 = 50Ω Parameter Test Conditions Units Min Typ Max Output Drive Current Load Dependent mA 10 — — +VCC Supply Range — V 3.0 5.0 12 +VCC Supply Tolerance — % — 5 — +VCC Quiescent Current No Load mA — 1.0 2.0 Linearity Application Dependent dB ± 1 ± 2.5 — Transfer Function Application Dependent dB/V 3 7.5 10 Settling Time 50% Ctl to 90%/10% RF µs — 50 — Absolute Maximum Ratings 1,2 Parameter Absolute Maximum +VCC +20 V Input + ± 5 V REF ± 5 V Output Current 20 mA Operating Temperature -40ºC to +85ºC Storage Temperature -65ºC to +125ºC Package Power Dissipation 150 mW Lead Temperature 300ºC for 10 seconds 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. Handling Procedures Please observe the following precautions to avoid damage: Static Sensitivity Gallium Arsenide Integrated Circuits are sensitive to electrostatic discharge (ESD) and can be damaged by static electric ity. Proper ESD control techniques should be used when handling these devices.

Visit www.macomtech.com for additional data sheets and product information. M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. Linear Driver for PIN Diode Attenuators Rev. V5 DR65-0002 ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions is considering for development. Performance is based on target specifications, simulated results, and/or prototype measurements. Commitment to develop is not guaranteed. 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. Commitment to produce in volume is not guaranteed. SOW-16† † Reference Application Note M538 for lead-free solder reflow recommendations.