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| AT90-0001 Digital Attenuator, 31.0 dB, 5-Bit, TTL Driver, DC-6.0 GHz 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 Rev. V11 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 Pin No. 1 2 3 4 5 Function NC C16 C8 C4 C2 C1 GND NC NC NC 2 Pin No. 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 Function NC NC NC NC NC NC NC NC NC GND RF2 GND NC2 -Vee NC +Vcc Ordering Information Part Number AT90-0001 AT90-0001TR AT90-0001-TB 6 7 Package Bulk Packaging 1000 piece reel Sample Test Board 8 9 10 11 12 GND RF1 GND NC NC NC Note: Reference Application Note M513 for reel size information. 13 14 15 16 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 Electrical Specifications: TA = 25C, Z0 = 50, Vcc = 5.0V, Vee = -5.0V Parameter Insertion Loss Rev. V11 Test Conditions -- Frequency DC - 2.0 GHz DC - 4.0 GHz DC - 6.0 GHz DC - 6.0 GHz DC - 6.0 GHz DC - 2.0 GHz DC - 6.0 GHz 50 MHz 0.5 - 6.0 GHz 50 MHz 0.5 - 6.0 GHz 50 MHz 0.5-6.0 GHz -- -- -- -- -- -- -- -- -- Units dB dB dB dB dB Ratio Ratio dBm dBm dBm dBm dB dB V V ns ns V V uA uA mA Min -- -- -- -- -- -- -- -- -- -- -- -- -- 4.75 -8.0 -- -- 0.0 2.0 -1.0 -- -- Typ 2.5 3.3 5.0 -- -- 1.4:1 1.7:1 +22 +24 +43 +60 +37 +48 5.0 -5.0 25 15 250 -- Max 3.1 3.8 5.8 (0.3 +4% of atten.) (0.3 +5% of atten.) 1.7:1 2.4:1 -- -- -- -- -- -- 5.25 -4.75 -- -- 0.8 5.0 1.0 400 1.0 Attenuation Accuracy VSWR 1 dB Compression Input IP2 Input IP3 Vcc Vee Switching Speed VIL VIH Iin (Input Leakage Current) Icc (Quiescent Supply Current) Icc3 (Additional Supply Current Per TTL Input Pin) Iee Thermal Resistance jc 3. 1 to 24 dB Bits 25 to 31 dB Bits Full Range -- -- Two tone inputs to +5 dBm Two-tone inputs up to +5 dBm -- -- 50% Cntl to 90%/10% RF 10% to 90% or 90% to 10% LOW-level input voltage HIGH-level input voltage Vin = Vcc or GND Vcntrl = Vcc or GND Vcc = Max, Vcntrl = Vcc - 2.1V Vee min to max, Vin = VIL or VIH -- -- -- mA C/W -1.0 -- -0.2 15 -- The 16 dB bit is connected to two driver input pins, so Icc needs to be calculated based on 6 TTL inputs. Absolute Maximum Ratings4,5 Parameter Absolute Maximum +27 dBm +34 dBm -0.5V Vcc +7.0V -8.5V Vee +0.5V -0.5V Vcc - Vee 14.5V -0.5V Vin Vcc + 0.5V -40C to +85C -65C to +125C Max. Input Power 0.05 GHz 0.5 - 6.0 GHz Vcc Vee Vcc - Vee Vin 6 Truth Table (Digital Attenuator) C16 0 0 0 0 0 1 1 C8 0 0 0 0 1 0 1 C4 0 0 0 1 0 0 1 C2 0 0 1 0 0 0 1 C1 0 1 0 0 0 0 1 Attenuation Loss, Reference 1 dB 2 dB 4 dB 8 dB 16 dB 31 dB 4. 5. 6. Operating Temperature Storage Temperature 0 = TTL Low; 1 = TTL High 2 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. 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 Handling Procedures Please observe the following precautions to avoid damage: Rev. V11 Recommended PCB Configuration7 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 Insertion Loss vs. Frequency + 8 5 C 6 + 2 5 C - 4 0 C 7. Application Note S2083 is available on line at www.macom.com VSWR vs. Frequency RF2 - 3 1 dB 2.4 2.2 2.0 RF1 - 3 1 dB R F1 - IL R F 2 - IL Insertion Loss (dB) 5 4 VSWR 0.0 1.0 2.0 3.0 4.0 5.0 6.0 3 2 1 0 1.8 1.6 1.4 1.2 1.0 0.0 1.0 2.0 3.0 4.0 5.0 6.0 Fre que ncy (GHz ) Fre que ncy (GHz ) Accuracy (dB) vs. Frequency 4 dB 0.50 1 dB 2 dB Accuracy (dB) vs. Frequency 16 d B 1.50 3 1 dB 8 dB Accuracy (dB) 0.25 0.00 Accuracy (dB) 1.0 2.0 3.0 4.0 5.0 6.0 0.75 0.00 -0.25 -0.50 0.0 -0.75 -1.50 0.0 1.0 2.0 3.0 4.0 5.0 6.0 Fre que ncy (GHz) 3 Fre que ncy (GHz ) 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. |
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