AT20-0273 MA-COM | Alldatasheet

Document overview

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  • PDF pages: 4

Technical content

Features

  • Attenuation: 16 dB steps to 32 dB
  • Temperature Stability: ± 0.18 dB from –40°C to +85°C Typical
  • Low DC Power Consumption
  • Surface Mount Package
  • Integral TTL Driver
  • Low Cost/High Performance
  • 50 Ohm Nominal Impedance
  • Lead-Free CR-11 Package
  • 260°C Reflow Compatible
  • RoHS* Compliant

Description

M/A-COM’s AT20-0273 is a GaAs FET digital attenuator with a 16 dB minimum step size and 32 dB total attenuation. This attenuator and integral TTL driver is in a sealed ceramic 16-lead surface mount package. The AT20-0273 is ideally suited for use where accuracy, fast switching, very low power consumption and low intermodulation products are required. Typical applications include dynamic range setting in precision receiver circuits and other gain/leveling control circuits. Available with en- hanced performance as fully hermetic version. Envi- ronmentally screenable as P/N AT-273-PIN.

Ordering Information

Note: Reference Application Note M513 for reel size information. Pin Configuration Pin No. Function Pin No. Function

1 C2 9 RF1

2 GND 10 GND

3 C1 11 GND

4 GND 12 GND

5 GND 13 Vee

6 GND 14 Vcc

7 GND 15 NC

8 RF2 16 NC

  • Restrictions on Hazardous Substances, European Union Directive 2002/95/EC. The metal bottom of the case must be connected to RF and DC ground. Functional Schematic1 RF1 GND GND GND Vee Vcc RF2 GND GND GND GND 16 dB 16 dB GND Orientation Mark C2 PIN 1 NC PIN 16 NC 1. Use the C1 control for a single 16-dB bit.

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. Digital Attenuator 32.0 dB, 2-Bit, TTL Driver, DC-2.0 GHz Rev. V6 AT20-0273 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°C2 Parameter Test Conditions Frequency Units Min Typ Max Reference Insertion Loss — DC - 0.5 GHz DC - 1.0 GHz DC - 2.0 GHz dB dB dB 1.2 1.3 1.5 1.6 1.7 1.9 Attenuation Accuracy 3 C1 Bit Full Attenuation (32 dB) DC - 2.0 GHz DC - 0.5 GHz DC - 1.0 GHz DC - 2.0 GHz ± 3% of attenuation setting in dB ± 3% of attenuation setting in dB ± 3% of attenuation setting in dB, -1 dB ± 3% of attenuation setting in dB, -3 dB VSWR — DC - 2.0 GHz Ratio — — 1.4:1 Trise, Tfall 10% to 90% — ns — 50 — Ton, Toff 50% Control to 90/10% RF — ns — 150 — Transients In-Band (peak-peak) — mV — 50 — 1 dB Compression Input Power Input Power

0.05 GHz

0.5 - 2.0 GHz dBm dBm +20 +28 Input IP3 For two-tone Input Power Up to +5 dBm 0.5 - 2.0 GHz dBm dBm +38 +48 Input IP2 For two-tone Input Power Up to +5 dBm 0.5 - 2.0 GHz dBm dBm +44 +68 Vcc — — V 4.5 5.0 5.5 Icc Vcc = 4.5 to 5.5V Vctl = 0 to 0.8V, or Vcc –2.1V to Vcc — mA — — 2.0 Iee Vee = -5.0 to -8.0V — mA — — 1.0 2. All specifications apply when operated with bi as voltages of +5V for Vcc and –5.0V for Vee. 3. This attenuator is guaranteed monotonic. Absolute Maximum Ratings 4,5 Parameter Absolute Maximum Max Input Power

0.5 GHz

0.5 - 2.0 GHz +27 dBm +34 dBm VCC -0.5V ≤ VCC ≤ +7.0V VEE -8.5V ≤ VEE ≤ +0.5V Operating Temperature -40°C to +125°C Storage Temperature -65°C to +150°C VCC - VEE -0.5V ≤ VCC - VEE ≤ 14.5V Vin6 -0.5V ≤ Vin ≤ VCC + 0.5V 4. Exceeding any one or combination of these limits may cause permanent damage to this device. 5. M/A-COM does not recommend sustained operation near these survivability limits. 6. Standard CMOS TTL interface, latch-up will occur if logic signal is applied prior to power supply.

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. Digital Attenuator 32.0 dB, 2-Bit, TTL Driver, DC-2.0 GHz Rev. V6 AT20-0273 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. 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. Truth Table (Digital Attenuator) C2 C1 Attenuation 0 0 Reference 0 1 16 dB 1 1 32 dB Control Input 0 = TTL Low; 1 = TTL High Attenuation Accuracy vs. Frequency VSWR vs. Frequency Typical Performance Curves Ref. Insertion Loss vs. Frequency F requency (GHz) Loss (dB) -5.0 -4.0 -3.0 -2.0 -1 .0 0.0 1. 0 F requency (GHz) Deviation from Nominal Atten (dB) Full Attenuation 1 6 dB bit 1. 0 0 1. 2 0 1. 4 0 1. 6 0 1. 8 0 2.00 Fre qu e n cy (GHz ) VSWR 1 6 dB State 32 dB StateFu ll Atten u ation

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. Digital Attenuator 32.0 dB, 2-Bit, TTL Driver, DC-2.0 GHz Rev. V6 AT20-0273 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. Lead-Free, CR-11 Ceramic Package† † Reference Application Note M538 for lead-free solder reflow recommendations.