MAAD-009171-000100 Digital Attenuator, Constant Phase 32 dB, 2-Bit, TTL Driver, DC-4.0 GHz Functional Schematic Features • • • • • • • • Rev. V1 Attenuation: Two 16 dB bits Minimal Phase Variation over Attenuation Range Low DC Power Consumption Small Footprint, PQFN Package Integral TTL Driver 50 ohm Impedance Test Boards are Available RoHS* Compliant Description M/A-COM's MAAD-009171-000100 is a GaAs FET 2-bit digital attenuator with two 16 dB steps and 32 dB total attenuation with integral TTL driver. This design has been optimized to minimize phase variation over the full attenuation range. This attenuator is in an RoHS compliant PQFN plastic surface mount package. MAAD-009171-000100 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. Pin Configuration1 Ordering Information Pin No. Function Pin No. Function 1 GND 17 NC 2 GND C8 18 NC 3 C4 C2 19 NC 4 C2 C1 20 NC 5 C1 GND 21 NC 6 C0.5 GND 22 NC Part Number Package 7 GND 23 NC MAAD-009171-000100 Bulk Packaging 8 NC 24 NC MAAD-009171-0001TR 1000 piece reel 9 NC 25 NC 2 26 GND MAAD-009171-0001TB Sample Test Board Note: Reference Application Note M513 for reel size information. * Restrictions on Hazardous Substances, European Union Directive 2002/95/EC. 1. 2. 10 NC 11 GND 27 RF2 12 RF1 28 GND 13 GND 29 NC2 14 NC 30 -Vee Vee 15 NC 31 NC 16 NC 32 +Vcc The exposed pad centered on the package bottom must be connected to RF and DC ground. (For PQFN Packages) Pins 10 & 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. MAAD-009171-000100 Digital Attenuator, Constant Phase 32 dB, 2-Bit, TTL Driver, DC-4.0 GHz Rev. V1 Electrical Specifications: TA = 25°C, Z0 = 50Ω, VCC = +5.0V, VEE = -5.0V Parameter Test Conditions Frequency Units Min Typ Max — — dBm — — +20 Reference Insertion Loss — DC - 2.0 GHz 2.0 - 4.0 GHz dB dB — — — — 1.9 2.2 Attenuation Accuracy4 16 dB Bit (C1 Control) 32 dB Attenuation DC - 4.0 GHz DC - 4.0 GHz dB dB 15.5 30.8 — — 16.8 34.0 Phase Accuracy Relative to Reference Loss State 16 dB Bit (C1 Control) 16 dB Bit (C1 Control) 32 dB Attenuation 32 dB Attenuation DC - 2.0 GHz 2.0 - 4.0 GHz DC - 2.0 GHz 2.0 - 4.0 GHz deg deg deg deg — — — — — — — — ±4º ±5º ±8º ±9º VSWR Reference Loss, 16 dB Bit (C1 Control), or 32 dB Attenuation DC - 4.0 GHz Ratio — — 1.8:1 1.3 V Cntl to 90% RF 1.3 V Cntl to 10% RF 10% RF to 90% RF 90% RF to 10% RF — — __ __ ns ns ns ns — — — — 42 30 19 16 — — — — 1 dB Compression5 Reference State Reference State 0.05 GHz 0.5 - 4.0 GHz dBm dBm — — >+26 >+26 — — Input IP3 Two-tone inputs up to +5 dBm 0.05-4.0 GHz dBm — +42 +42 — Input IP2 Two-tone inputs up to +5 dBm 0.05-4.0 GHz dBm — +55 +77 — Vcc Vee — — — — V V 4.5 -8.0 5.0 -5.0 5.5 -4.5 VIL VIH LOW-level input voltage HIGH-level input voltage — — V V 0.0 2.0 0.0 5.0 0.8 5.0 lin (Input Leakage Current) Vin = VCC or GND — uA -1 — 1 Icc (Quiescent Supply Current) Vcntrl = VCC or GND — uA — 250 400 ΔIcc (Additional Supply Current Per TTL Input Pin) VCC = Max Vcntrl = VCC - 2.1 V — mA — — 1.5 IEE VEE min to max Vin = VIL or VIH — mA -1.0 -0.2 — Thermal Resistance θjc — — °C/W — 35 — Operating Power 3 Switching Speed Ton Toff Trise Tfall 3. 4. 5. Maximum operating power is specified with the input applied to RF1. If the input is applied to RF2, then maximum operating power is +16 dBm. This attenuator is guaranteed monotonic. 1 dB Compression was measured up to +26 dBm, which is the absolute maximum rating for this device. 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. MAAD-009171-000100 Digital Attenuator, Constant Phase 32 dB, 2-Bit, TTL Driver, DC-4.0 GHz Rev. V1 Recommended PCB Configuration10 Absolute Maximum Ratings 6,7 Parameter Absolute Maximum 8 Max. Input Power +26 dBm VCC -0.5V ≤ VCC ≤ +7.0V VEE -8.5V ≤ VEE ≤ +0.5V VCC - VEE -0.5V ≤ VCC - VEE ≤ 14.5V Vin 6. 7. 8. 9. 9 -0.5V ≤ Vin ≤ VCC + 0.5V Operating Temperature -40ºC to +85ºC Storage Temperature -65ºC to +125ºC 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. Maximum input power is specified with power applied to RF1. Standard CMOS TTL interface, latch-up will occur if logic signal is applied prior to power supply. 10. Application Note S2083 is available on line at www.macom.com 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. Truth Table (Digital Attenuator)11 C2 C1 Attenuation 0 0 Loss, Reference 0 1 16 dB 1 1 32 dB 0 = TTL Low; 1 = TTL High 11. C1 is specified as the control for the 16 dB bit. We show data for the performance with the C2 control - note that the power handling is reduced if C2 is used for the 16 dB bit. The electrical performance of the 16 dB bit controlled by C2 is not specified. 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. MAAD-009171-000100 Digital Attenuator, Constant Phase 32 dB, 2-Bit, TTL Driver, DC-4.0 GHz Rev. V1 Typical Performance Curves Reference Loss vs. Frequency Attenuation - 16 dB Bit (C1) vs. Frequency 17.0 25ºC 3.0 Reference Loss (dB) Reference Loss (dB) 3.5 85ºC 2.5 2.0 1.5 1.0 -40ºC 1.0 2.0 25ºC 85ºC 16.6 16.4 16.2 16.0 -40ºC 0.5 0.0 16.8 3.0 4.0 5.0 15.8 6.0 0.0 1.0 2.0 Frequency (GHz) Attenuation - 16 dB Bit (C2) vs. Frequency 5.0 6.0 35.0 17.0 25ºC 85ºC 16.8 Reference Loss (dB) Reference Loss (dB) 4.0 Attenuation - 32 dB Attenuation vs. Frequency 17.2 16.6 16.4 -40ºC 16.2 25ºC 34.5 34.0 85ºC 33.5 33.0 -40ºC 32.5 32.0 16.0 0.0 1.0 2.0 3.0 4.0 5.0 0.0 6.0 1.0 2.0 3.0 4.0 5.0 6.0 4.0 5.0 6.0 Frequency (GHz) Frequency (GHz) Phase - 16 dB Bit (C1) vs. Frequency Relative to Reference Loss State Phase - 16 dB Bit (C2) vs. Frequency Relative to Reference Loss State 2.0 2.0 -40ºC -40ºC 0.0 Phase (Degrees) Phase (Degrees) 3.0 Frequency (GHz) 25ºC -2.0 -4.0 85ºC 0.0 -2.0 -4.0 85ºC 25ºC -6.0 -6.0 0.0 1.0 2.0 3.0 Frequency (GHz) 4.0 5.0 6.0 0.0 1.0 2.0 3.0 Frequency (GHz) 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. MAAD-009171-000100 Digital Attenuator, Constant Phase 32 dB, 2-Bit, TTL Driver, DC-4.0 GHz Rev. V1 Typical Performance Curves VSWR - Reference State vs. Frequency Phase - 32 dB Attenuation vs. Frequency Relative to Reference Loss State 4.0 2.0 1.8 0.0 -40ºC -2.0 VSWR Phase (Degrees) 2.0 25ºC -4.0 -6.0 RF2 RF1 1.4 1.2 85ºC -8.0 0.0 1.6 1.0 2.0 3.0 4.0 5.0 1.0 6.0 0.0 1.0 2.0 Frequency (GHz) 2.0 2.0 1.8 1.8 1.6 1.6 RF1 RF2 4.0 5.0 6.0 4.0 5.0 6.0 VSWR - 16 dB Bit (C2) vs. Frequency VSWR VSWR VSWR - 16 dB Bit (C1) vs. Frequency 1.4 3.0 Frequency (GHz) RF2 RF1 1.4 1.2 1.2 1.0 1.0 0.0 1.0 2.0 3.0 4.0 5.0 6.0 0.0 1.0 2.0 3.0 Frequency (GHz) Frequency (GHz) VSWR - 32 dB Attenuation vs. Frequency 2.0 VSWR 1.8 1.6 1.4 RF1 RF2 1.2 1.0 0.0 1.0 2.0 3.0 4.0 5.0 6.0 Frequency (GHz) 5 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. MAAD-009171-000100 Digital Attenuator, Constant Phase 32 dB, 2-Bit, TTL Driver, DC-4.0 GHz Rev. V1 Typical Performance Typical Input IP2 and IP3 at Room Temperature12 IP2 Attenuation IP3 Units 50 MHz 500 MHz 2 GHz 50 MHz 500 MHz 2 GHz Reference State 55 77 75 42 42 43 dBm 16 dB (C1) 62 78 87 41 41 44 dBm 16 dB (C2) 57 78 77 41 41 44 dBm 32 dB 65 80 90 43 43 53 dBm 12. IP2 and IP3 are measured with two-tone inputs F1 and F2 up to +5 dBm with 1 MHz spacing. CSP-1, 4 x 6 mm, 32-lead PQFN† † Reference Application Note M538 for lead-free solder reflow recommendations. 6 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.