AT20-0263 Digital Attenuator 31.0 dB, 5-Bit, TTL Driver, DC-2.0 GHz Features Rev. V5 Functional Schematic • Attenuation: 1 dB steps to 31 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-12 Package • 260°C Reflow Compatible • RoHS* Compliant C5 RF2 16 dB +5V GND 8 dB -5V C4 GND GND 4 dB C3 GND GND 2 dB C2 GND Orientation Mark C1 1 dB PIN 16 GND RF1 PIN 1 Description M/A-COM’s AT20-0263 is a GaAs FET 5-bit digital attenuator with a 1 dB minimum step size and 31 dB total attenuation. This attenuator and integral TTL driver is in a ceramic 16-lead surface mount package. The AT20-0263 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 enhanced performance as fully hermetic version. Environmentally screenable as P/N AT-263-PIN. Pin Configuration Pin No. Function Pin No. Function 1 RF1 9 C5 2 GND 10 +5V 3 GND 11 -5V 4 GND 12 C4 5 GND 13 C3 6 GND 14 C2 7 GND 15 C1 8 RF2 16 GND The metal bottom of the case must be connected to RF and DC ground. Ordering Information Part Number Package AT20-0263 Bulk Packaging Note: Reference Application Note M513 for reel size information. * Restrictions on Hazardous Substances, European Union Directive 2002/95/EC. 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. AT20-0263 Digital Attenuator 31.0 dB, 5-Bit, TTL Driver, DC-2.0 GHz Rev. V5 Electrical Specifications: TA = 25°C1 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 — — — 2.0 2.2 2.5 2.4 2.8 3.0 Attenuation Accuracy 2 Any Single Bit Any Combination of Bits DC - 1.0 GHz DC - 2.0 GHz VSWR — DC - 2.0 GHz Ratio — — 1.6:1 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 0.05 GHz 0.5 - 2.0 GHz dBm dBm — — +40 +48 — — Input IP2 For two-tone Input Power Up to +5 dBm 0.05 GHz 0.5 - 2.0 GHz dBm dBm — — +45 +68 — — Vcc — — V 4.5 5.0 5.5 Vee — — V -8.0 — -5.0 Icc Vcc = 4.5 to 5.5V Vctl = 0 to 0.8V, or Vcc – 2.1V to Vcc — mA — — 5.0 Iee Vee = -5.0 to -8.0V — mA — — 1.0 ± (0.25 +3% of atten setting in dB) dB ± (0.25 +3% of atten setting in dB) dB or ± 0.4 dB, whichever is greater 1. All specifications apply when operated with bias voltages of +5V for Vcc and –5.0V for Vee. 2. This attenuator is guaranteed monotonic. Absolute Maximum Ratings 3,4 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 VCC - VEE -0.5V ≤ VCC - VEE ≤ 14.5V Vin 3. 4. 5. 5 Recommended PCB Configuration -0.5V ≤ Vin ≤ VCC + 0.5V Operating Temperature -40°C to +125°C Storage Temperature -65°C to +150°C Exceeding any one or combination of these limits may cause permanent damage to this device. M/A-COM does not recommend sustained operation near these survivability limits. Standard CMOS TTL interface, latch-up will occur if logic signal is applied prior to power supply. 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. AT20-0263 Digital Attenuator 31.0 dB, 5-Bit, TTL Driver, DC-2.0 GHz Rev. V5 Truth Table (Digital Attenuator) Handling Procedures Control Inputs Please observe the following precautions to avoid damage: C5 C4 C3 C2 C1 Attenuation 0 0 0 0 0 Reference Static Sensitivity 0 0 0 0 1 1 dB Gallium Arsenide 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. 0 0 0 1 0 2 dB 0 0 1 0 0 4 dB 0 1 0 0 0 8 dB 1 0 0 0 0 16 dB 1 1 1 1 1 31 dB 0 = TTL Low; 1 = TTL High Typical Performance Curves Attenuation Accuracy vs. Frequency Ref. Insertion Loss vs. Frequency + 2 5 °C - 55 °C Deviation from Nominal Atten (dB) + 8 5 °C 5 Loss (dB) 4 3 2 1 0 0.0 0.5 1.0 1.5 2.0 0.5 1,2 , 4 ,8 , 16 d B F ull A t t enuat io n 0 -0.5 -1 -1.5 0.0 0.5 1.0 1.5 2.0 Fre que ncy (GHz ) Fre que ncy (GHz ) VSWR vs. Frequency 4 d B St at e 1 d B St at e 2.00 V SW R 1.80 1.60 1.40 1.20 1.00 0.00 0.50 1.00 1.50 2.00 Frequency (GHz) 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. AT20-0263 Digital Attenuator 31.0 dB, 5-Bit, TTL Driver, DC-2.0 GHz Rev. V5 Lead-Free CR-12 Ceramic Package† † Reference Application Note M538 for lead-free solder reflow recommendations. 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.