AT90-0001 Digital Attenuator, 31.0 dB, 5-Bit, TTL Driver, DC-6.0 GHz Rev. V11 Features * * * * * * * * Attenuation: 1.0 dB Steps to 31 dB High Accuracy to 6 GHz Small Footprint, JEDEC Package Integral TTL driver 50 ohm impedance Test boards are available Tape and Reel Packaging Available CSP-1 Package Functional Schematic Description M/A-COM's AT90-0001 is a GaAs FET 5-bit digital attenuator with an integral TTL driver. Step size is 1.0 dB providing 31 dB total attenuation range. This device is in a 32 lead FQFP-N surface mount package. Due to superior grounding techniques this digital attenuator offers superior performance to 6 GHz. The AT90-0001 is ideally suited for use where accuracy, fast speed, very low power consumption and low costs are required. Pin Configuration1 Ordering Information Pin No. Function Pin No. Function 1 NC 17 NC 2 C16 18 NC 3 C8 19 NC 4 C4 20 NC 5 C2 21 NC 6 C1 22 NC 7 GND 23 NC Part Number Package 8 NC 24 NC AT90-0001 Bulk Packaging 9 NC 25 NC 2 26 GND AT90-0001TR 1000 piece reel 10 NC AT90-0001-TB Sample Test Board 11 GND 27 RF2 12 RF1 28 GND 13 GND 29 NC2 14 NC 30 -Vee 15 NC 31 NC 16 NC 32 +Vcc Note: Reference Application Note M513 for reel size information. 1. 2. The exposed pad centered on the package bottom must be connected to RF and DC ground. (For PQFN Packages) Pins 10 and 29 must be isolated. 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. AT90-0001 Digital Attenuator, 31.0 dB, 5-Bit, TTL Driver, DC-6.0 GHz Rev. V11 Electrical Specifications: TA = 25C, Z0 = 50, Vcc = 5.0V, Vee = -5.0V Parameter Test Conditions Frequency Units Min Typ Max Insertion Loss -- DC - 2.0 GHz DC - 4.0 GHz DC - 6.0 GHz dB dB dB -- -- -- 2.5 3.3 5.0 3.1 3.8 5.8 Attenuation Accuracy 1 to 24 dB Bits 25 to 31 dB Bits DC - 6.0 GHz DC - 6.0 GHz dB dB -- -- -- -- (0.3 +4% of atten.) (0.3 +5% of atten.) VSWR Full Range DC - 2.0 GHz DC - 6.0 GHz Ratio Ratio -- -- 1.4:1 1.7:1 1.7:1 2.4:1 1 dB Compression -- -- 50 MHz 0.5 - 6.0 GHz dBm dBm -- -- +22 +24 -- -- Input IP2 Two tone inputs to +5 dBm 50 MHz 0.5 - 6.0 GHz dBm dBm -- -- +43 +60 -- -- Input IP3 Two-tone inputs up to +5 dBm 50 MHz 0.5-6.0 GHz dB dB -- -- +37 +48 -- -- Vcc Vee -- -- -- -- V V 4.75 -8.0 5.0 -5.0 5.25 -4.75 Switching Speed 50% Cntl to 90%/10% RF 10% to 90% or 90% to 10% -- -- ns ns -- -- 25 15 -- -- VIL VIH LOW-level input voltage HIGH-level input voltage -- -- V V 0.0 2.0 - 0.8 5.0 Iin (Input Leakage Current) Vin = Vcc or GND -- uA -1.0 - 1.0 Icc (Quiescent Supply Current) Vcntrl = Vcc or GND -- uA -- 250 400 Icc3 (Additional Supply Current Per TTL Input Pin) Vcc = Max, Vcntrl = Vcc - 2.1V -- mA -- -- 1.0 Iee Vee min to max, Vin = VIL or VIH -- mA -1.0 -0.2 - Thermal Resistance jc -- -- C/W -- 15 -- The 16 dB bit is connected to two driver input pins, so Icc needs to be calculated based on 6 TTL inputs. 3. Absolute Maximum Ratings4,5 Truth Table (Digital Attenuator) C16 C8 C4 C2 C1 Attenuation 0 0 0 0 0 Loss, Reference 0 0 0 0 1 1 dB 0 0 0 1 0 2 dB 0 0 1 0 0 4 dB 0 1 0 0 0 8 dB Absolute Maximum Max. Input Power 0.05 GHz 0.5 - 6.0 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 1 0 0 0 0 16 dB 4. 1 1 1 1 1 31 dB 5. 0 = TTL Low; 1 = TTL High Parameter 6. 6 -0.5V Vin Vcc + 0.5V Operating Temperature -40C to +85C Storage Temperature -65C to +125C 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. AT90-0001 Digital Attenuator, 31.0 dB, 5-Bit, TTL Driver, DC-6.0 GHz Rev. V11 Recommended PCB Configuration7 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 electricity. Proper ESD control techniques should be used when handling these devices. Moisture Sensitivity The MSL rating for this part is defined as Level 2 per IPC/JEDEC J-STD-020. Parts shall be stored and/or baked as required for MSL Level 2 parts. Typical Performance Curves 7. Insertion Loss vs. Frequency + 8 5 C + 2 5 C Application Note S2083 is available on line at www.macom.com VSWR vs. Frequency - 4 0 C RF2 - 3 1 dB 5 R F1 - IL R F 2 - IL 2.2 4 2.0 3 2 1.8 1.6 1.4 1 1.2 0 0.0 1.0 2.0 3.0 4.0 5.0 1.0 6.0 0.0 1.0 Fre que ncy (GHz ) 4 dB 1 dB 2.0 3.0 4.0 5.0 6.0 5.0 6.0 Fre que ncy (GHz ) Accuracy (dB) vs. Frequency Accuracy (dB) vs. Frequency 16 d B 2 dB 3 1 dB 8 dB 1.50 Accuracy (dB) 0.50 Accuracy (dB) RF1 - 3 1 dB 2.4 VSWR Insertion Loss (dB) 6 0.25 0.00 -0.25 -0.50 0.75 0.00 -0.75 -1.50 0.0 1.0 2.0 3.0 4.0 Fre que ncy (GHz) 5.0 6.0 0.0 1.0 2.0 3.0 4.0 Fre que ncy (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. AT90-0001 Digital Attenuator, 31.0 dB, 5-Bit, TTL Driver, DC-6.0 GHz Rev. V11 CSP-1, 4 x 6 mm, 32-lead PQFN 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.