MAATSS0002 Digital Attenuator, 5-Bit, 31 dB 400 - 2500 MHz Functional Schematic Features • • • • Rev. V6 5 Bits, 1 dB Steps Excellent Accuracy Single Positive Control (+3 V to +5 V) QSOP-16 (SSOP-16) Package 16 dB 8 dB Description 4 dB M/A-COM’s MAATSS0002 is a 1 dB step GaAs MMIC digital attenuator with 31 dB attenuation range in a low cost QSOP-16 (SSOP-16) package. It requires external DC blocking capacitors on the RF ports, positive supply voltage and five individual bit control voltages. The MAATSS0002 is particularly suited where high attenuation accuracy, low insertion loss and low intermodulation products are required. Typical applications include base stations, wireless data, and wireless local loop gain level control circuits. The MAATSS0002 is fabricated using M/A-COM’s GaAs 1.0 micron process. The process features full chip passivation for increased performance and reliability. Ordering Information1 Part Number Package MAATSS0002 Bulk Packaging MAATSS0002TR Tape and Reel (1K Reel) MAATSS0002SMB Sample Test Board 2 dB 1 dB Pin Configuration Pin No. Function Pin No. Function 1 GND 9 RF2 2 GND 10 GND 3 VC1 11 GND 4 VC2 12 GND 5 VC3 13 GND 6 VC4 14 GND 7 VC5 15 GND 8 GND 16 RF1 Recommended Configuration 1. Reference Application Note M513 for reel size information. Parameter Absolute Maximum Input Power +34 dBm Voltage +7 V Operating Temperature -40°C to +85°C Storage Temperature -65°C to +125°C 2. Exceeding any one or combination of these limits may cause permanent damage to this device. MAATSS0002 Absolute Maximum Ratings 2 10 KΩ 1 ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions • North America Tel: 800.366.2266 / Fax: 978.366.2266 is considering for development. Performance is based on target specifications, simulated results, • Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300 and/or prototype measurements. Commitment to develop is not guaranteed. • Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298 PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology Visit www.macomtech.com for additional data sheets and product information. 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. MAATSS0002 Digital Attenuator, 5-Bit, 31 dB 400 - 2500 MHz Rev. V6 Electrical Specifications: TA = 25°C, Z0 = 50 Ω, Vs = +5 V, Vc = 0 V / 5 V Parameter Conditions Frequency Units Min. Typ. Max. Insertion Loss (reference state) — 0.8 - 1.5 GHz 1.5 - 2.0 GHz 2.0 - 2.5 GHz dB dB dB — — — 1.8 2.2 2.7 1.9 2.3 2.9 Accuracy — 0.8 - 1.5 GHz 1.5 - 2.0 GHz 2.0 - 2.5 GHz Step Change — 0.8 - 1.5 GHz 1.5 - 2.0 GHz 2.0 - 2.5 GHz dB dB dB 0.4 0.4 0.4 1.0 1.0 1.0 1.4 1.6 1.8 Attenuation Range — 0.8 - 2.5 GHz dB — 31 — VSWR — 0.8 - 2.5 GHz ratio — — 2.0:1 Trise, Tfall 10% to 90% RF, 90% to 10% RF — µS — 2 — Ton, Toff 50% Control to 10% / 90% RF — µS — 2 — Transients In Band — mV — 120 — P1dB +3V +5V 0.8 - 2.5 GHz 0.8 - 2.5 GHz dBm dBm 15 18 21 27 — — IP3 Two tones, Pin < +5 dBm/tone +3 V +5 V 0.8 - 2.5 GHz 0.8 - 2.5 GHz dBm dBm 34 43 — — — — Control Current Vc Vs — — µA µA — — — — 40 200 ± (0.3 dB + 4% of Attenuation) ± (0.3 dB + 3% of Attenuation) ± (0.4 dB + 3% of Attenuation) Truth Table 3 Control Inputs VC5 VC4 VC3 VC2 VC1 Attenuation (dB) 1 1 1 1 1 Reference 0 1 1 1 1 1 dB 1 0 1 1 1 2 dB 1 1 0 1 1 4 dB 1 1 1 0 1 8 dB 1 1 1 1 0 16 dB 3. 0 = 0.0 V ± 0.2 V 1 = Vs = 5.0 V ± 0.2 V 2 ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions • North America Tel: 800.366.2266 / Fax: 978.366.2266 is considering for development. Performance is based on target specifications, simulated results, • Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300 and/or prototype measurements. Commitment to develop is not guaranteed. • Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298 PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology Visit www.macomtech.com for additional data sheets and product information. 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. MAATSS0002 Digital Attenuator, 5-Bit, 31 dB 400 - 2500 MHz Rev. V6 Typical Performance Curves Insertion Loss Attenuation at Major Bits 35 5 30 +25ºC -40ºC +85ºC 4 1 dB 2 dB 4 dB 8 dB 16 dB 31 dB 25 3 20 15 2 10 1 5 0 0 0 500 1000 1500 2000 2500 0 3000 500 1000 Frequency (MHz) 2000 2500 3000 2500 3000 Output Return Loss Input Return Loss 0 0 -10 -10 -20 -20 -30 -30 1 dB 2 dB 4 dB 8 dB 16 dB 31 dB -40 1500 Frequency (MHz) 1 dB 2 dB 4 dB 8 dB 16 dB 31 dB -40 -50 -50 0 500 1000 1500 2000 2500 3000 0 500 1000 Frequency (MHz) 1500 2000 Frequency (MHz) Attenuation Accuracy vs. Setting Attenuation Accuracy 2 5 1 0 0 -1 1 dB 2 dB 4 dB 8 dB 16 dB 31 dB -5 -10 -2 -3 250 MHz 400 MHz 900 MHz 1900 MHz 2200 MHz 2500 MHz -4 -15 -5 -6 -20 0 500 1000 1500 2000 Frequency (MHz) 2500 3000 0 4 8 12 16 20 24 28 32 Attenuation Setting (dB) 3 ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions • North America Tel: 800.366.2266 / Fax: 978.366.2266 is considering for development. Performance is based on target specifications, simulated results, • Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300 and/or prototype measurements. Commitment to develop is not guaranteed. • Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298 PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology Visit www.macomtech.com for additional data sheets and product information. 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. MAATSS0002 Digital Attenuator, 5-Bit, 31 dB 400 - 2500 MHz Rev. V6 Typical Performance Curves Step Size (low frequency) Step Size (high frequency) 2.0 2.0 250 MHz 400 MHz 900 MHz 1.5 1.5 1.0 1.0 0.5 0.5 1900 MHz 2200 MHz 2500 MHz 0.0 0.0 0 4 8 12 16 20 24 28 0 32 4 8 12 16 20 24 28 32 Attenuation Setting (dB) Attenuation Setting (dB) IIP3 at 5 V IIP3 at 3 V 55 55 +25ºC -40ºC +85ºC 50 50 45 45 40 40 35 35 +25ºC -40ºC +85ºC 30 30 0 500 1000 1500 2000 2500 0 500 1000 1500 2000 2500 Frequency (MHz) Frequency (MHz) Sample Board Loss 0.5 +25ºC -40ºC +85ºC 0.4 0.3 0.2 0.1 0.0 0 500 1000 1500 2000 2500 Frequency (MHz) 4 ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions • North America Tel: 800.366.2266 / Fax: 978.366.2266 is considering for development. Performance is based on target specifications, simulated results, • Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300 and/or prototype measurements. Commitment to develop is not guaranteed. • Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298 PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology Visit www.macomtech.com for additional data sheets and product information. 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. MAATSS0002 Digital Attenuator, 5-Bit, 31 dB 400 - 2500 MHz Rev. V6 QSOP-16 (SSOP-16) Operating Instructions The MAATSS0002 is designed to operate with 5 V logic levels. The difference between +3 V and +5 V operation is minimal for small signal performance. IIP3, however, is a strong function of voltage. +3 V is the minimum voltage at which the product will reliably operate. The MAATSS0002 requires a parallel interface that allows the user to enter a 5 bit digital word. Each state increments the attenuation by 1.0 dB giving a total range of 31 dB. The MAATSS0002 is not internally DC blocked. This means that the device requires DC blocking capacitors on the RF1 and RF2 ports. M/A-COM recommends 0.1 uF to allow for the entire frequency range to be utilized. Higher frequency applications can use smaller value capacitors as DC blocks. For application information concerning this and other M/A-COM products, please visit our website at www.macom.com, where information including soldering profiles, reliability procedures, and Sparameter data can be found. 5 ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions • North America Tel: 800.366.2266 / Fax: 978.366.2266 is considering for development. Performance is based on target specifications, simulated results, • Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300 and/or prototype measurements. Commitment to develop is not guaranteed. • Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298 PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology Visit www.macomtech.com for additional data sheets and product information. 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.