MAADSS0008 Digital Attenuator, 1-Bit, 15 dB DC - 2.0 GHz Features * * * * * * * * * Rev. V1 Functional Schematic Single 15-dB Step Low Loss, 0.3 dB Typical @ 900 MHz 2.5 to 5.0 Volt Operation Tape and Reel Packaging Available Lead-Free SOT-25 Package 100% Matte Tin Plating over Copper Halogen-Free "Green" Mold Compound 260C Reflow Compatible RoHS* Compliant Version of AT-267 5 4 Description M/A-COM's MAADSS0008 is a 1-bit, 15-dB step GaAs MMIC digital attenuator in a lead-free SOT-25, 5 lead surface mount plastic package. The MAADSS0008 is ideally suited for use where high accuracy, very low power consumption and low intermodulation products are required. Typical applications include wireless handsets, base stations, wireless LAN equipment, GPS receivers and any RF applications with automatic gain/level control circuits. 1 2 3 Pin Configuration Pin No. Function Pin No. Function 1 RF Input Port 4 V1 2 Ground 5 V2 3 RF Output Port The MAADSS0008 is fabricated as a monolithic GaAs integrated circuit using a mature PHEMT process. The process features full chip passivation for performance and reliability. Absolute Maximum Ratings 2,3 Ordering Information 1 Part Number Package Parameter Absolute Maximum MAADSS0008TR 1000 piece reel Input Power +21 dBm MAADSS0008TR-3000 3000 piece reel MAADSS0008SMB Sample Board 1. Reference Application Note M513 for reel size information. Control Voltage VC 8V Operating Temperature -40C to +85C Storage Temperature -65C to +150C 2. Exceeding any one or combination of these limits may cause permanent damage to this device. 3. M/A-COM does not recommend sustained operation near these survivability limits. * 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 / 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. MAADSS0008 Digital Attenuator, 1-Bit, 15 dB DC - 2.0 GHz Rev. V1 Electrical Specifications4: TA = 25C, VC = +2.5 Volts, Z0 = 50 Parameter Test Conditions Units Min Typ Max Insertion Loss (Reference State) 1.0 GHz 2.0 GHz dB dB -- -- 0.3 0.4 0.4 0.5 Attenuation 1.0 GHz 2.0 GHz dB dB 14.6 14.4 15.1 14.9 15.6 15.4 VSWR 1.0 GHz 2.0 GHz Ratio Ratio -- -- 1.2:1 1.3:1 -- -- Input IP3 1.0 GHz Insertion Loss State Attenuation State dBm dBm 40 40 50 50 -- -- P1dB 1.0 GHz Insertion Loss State Attenuation State dBm dBm 24 20 26 23 -- -- Control Current -- A -- -- 10 Trise, Tfall 10% to 90% RF, 90% to 10% RF nS -- 29 -- Ton, Toff 50% Control to 90% RF, 50% Control to 10% RF nS -- 50 -- Transients In-band mV -- 10 -- 4. For positive voltage control, external DC blocking capacitors are required on all RF ports (pins 1, 2 and 3). Lead-Free SOT-25 Positive Control Voltage Schematic 5 1 Reference Application Note M538 for lead-free solder reflow recommendations. 39 pF 4 2 39 pF 3 39 pF Truth Table 5,6 Mode (Control) V1 V2 Attenuation Positive 5 0 0.2V +2.5V to +5V +2.5V to +5V 0 0.2V 15 dB Reference State Negative 6 0 0.2V -2.5V to -5V Reference State 15 dB -2.5V to -5V 0 0.2V 5. External DC blocking capacitors are required as noted. 6. If negative control is used, DC blocking capacitors are not required on RF ports and ground. 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. MAADSS0008 Digital Attenuator, 1-Bit, 15 dB DC - 2.0 GHz Rev. V1 Typical Performance Curves Insertion Loss with Negative Control +25C +85C Insertion Loss with Positive Control +25C -40C Insertion Loss (dB) Insertion Loss (dB) 1.0 0.8 0.6 0.4 0.2 0.0 0.8 0.6 0.4 0.2 1.0 2.0 3.0 0.0 0.5 F requency ( GH z) 1.5 2.0 2.5 3.0 Attenuation with Positive Control +85C -40C +25C 17 17 16 16 Attenuation (dB) Attenuation (dB) +25C 1.0 F re que nc y ( GH z) Attenuation with Negative Control 15 14 13 12 +85C -40C 15 14 13 12 0.0 0.5 1.0 1.5 2.0 2.5 3.0 0.0 0.5 F re que nc y ( G H z) 0dB 1.5 2.0 2.5 3.0 VSWR, 0 and 15 dB States with Positive Control at +25C 15dB 0dB 2.0 2.0 1.8 1.8 VSWR 1.6 1.4 1.2 1.0 0.0 1.0 F re que nc y ( G H z) VSWR, 0 and 15 dB States with Negative Control at +25C VSWR -40C 0.0 0.0 15dB 1.6 1.4 1.2 0.5 1.0 1.5 2.0 Frequency (GHz) 3 +85C 1.0 2.5 3.0 1.0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 Frequency (GHz) 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.