AT90-1283

AT90-1283 Digital Attenuator 15.5 dB, 5-Bit, TTL Driver, DC-3.5 GHz Rev. V11 Schematic with Off-Chip Components Features • • • • • • • • Attenuation: 0.5 dB Steps to 15.5 dB Single Positive Supply Contains Internal DC to DC Converter Low DC Power Consumption Small Footprint, JEDEC Package Integral TTL Driver 50 ohm Impedance CSP-1 Package Description M/A-COM's AT90-1283 is a GaAs FET 5-bit digital attenuator with integral TTL driver. Step size is 0.5 dB providing a 15.5 dB total attenuation range. This device is in an PQFN plastic surface mount package. The AT90-1283 is ideally suited for use where accuracy, fast speed, very low power consumption and low costs are required. For dual supply designs without switching noise, use AT900283. Pin Configuration3 Pin No. 1 2 3 Function GND C8 C4 C2 C1 C0.5 GND NC NC NC1 GND RF1 GND NC NC NC Pin No. 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 Function NC NC Vcc NC Cp NC Cp NC VEE2 GND RF2 GND NC1 VEE2 NC Vcc Ordering Information Part Number AT90-1283 AT90-1283TR AT90-1283-TB 4 5 Package Bulk Packaging 1000 piece reel Sample Test Board 6 7 8 9 10 11 12 13 14 15 16 Note: Reference Application Note M513 for reel size information. 1. Pins 10 and 29 must be isolated. 2. VEE is produced internally and requires a .1 µF cap to GND. Generated noise is typical of switching DC-DC Converters. 3. The exposed pad centered on the package bottom must be connected to RF and DC ground. (For PQFN Packages) 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. AT90-1283 Digital Attenuator 15.5 dB, 5-Bit, TTL Driver, DC-3.5 GHz Electrical Specifications: TA = +25°C Parameter Insertion Loss Attenuation Accuracy Rev. V11 Test Conditions — Individual Bits 0.5-1-4-8 dB Individual Bit 2 dB Any Combination of Bits 1 to 15.5 dB Full Range 50% Cntl to 90%/10% RF 10% to 90% or 90% to 10% — — Two-tone inputs up to +5 dBm — LOW-level input voltage HIGH-level input voltage Vin = VCC or GND Vcc min to max, Logic “0” or “1” 5 Frequency DC - 3.5 GHz DC - 3.5 GHz DC - 3.5 GHz DC - 3.5 GHz DC - 3.5 GHz — — 50 MHz 0.5 - 3.5 GHz 50 MHz 0.5-3.5 GHz — — — — — — — Units dB dB dB dB Ratio ns ns dBm dBm dB dB V V V uA mA mA mA Min — — — — — — — — — — — 4.75 0.0 2.0 -1.0 — — — Typ 2.8 — — — 1.6:1 75 20 +21 +29 +35 +48 5.0 — — — 6 — — Max 3.2 ±(.3 +5% of atten setting) ±(.4 +10% of atten setting) ±(.5 +7% of atten setting) 1.8:1 150 50 — — — — 5.25 0.8 5.0 1.0 10 125 1.0 VSWR Switching Speed 1 dB Compression Input IP3 Vcc VIL VIH lin (Input Leakage Current) Icc 4 Turn-on Current For guaranteed start-up VCC = Max, Vcntrl = VCC - 2.1 V ΔIcc (Additional Supply Current Per TTL Input Pin) Switching Noise Generated from DC-DC Converter with recommended capacitors — 3.5 MHz dBm — -93 — Thermal Resistance θjc 4. 5. — °C/W — 15 — During turn-on, the device requires an initial start up current (Icc) specified as “Turn-on Current”. Once operational, Icc will drop to the specified levels. The DC-DC converter is guaranteed to start in 100 µs as long as the power supplies have the maximum turn-on current available for start-up. Absolute Maximum Ratings 6,7 Parameter Max. Input Power 0.05 GHz 0.5 - 3.5 GHz VCC Vin 8 Handling Procedures Please observe the following precautions to avoid damage: Absolute Maximum +27 dBm +34 dBm -0.5V ≤ VCC ≤ +6.0V -0.5V ≤ Vin ≤ VCC + 0.5V -40ºC to +85ºC -65ºC to +125ºC 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. Operating Temperature Storage Temperature 6. 7. 8. 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. 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. 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. AT90-1283 Digital Attenuator 15.5 dB, 5-Bit, TTL Driver, DC-3.5 GHz Recommended PCB Configuration9 Truth Table (Digital Attenuator) C8 0 0 0 0 0 1 1 Rev. V11 C4 0 0 0 0 1 0 1 C2 0 0 0 1 0 0 1 C1 0 0 1 0 0 0 1 C0.5 0 1 0 0 0 0 1 Attenuation Loss, Reference 0.5 dB 1.0 dB 2.0 dB 4.0 dB 8.0 dB 15.5 dB 0 = TTL Low; 1 = TTL High 9. Application Note C2083 is available on line at www.macom.com Typical Performance Curves Insertion Loss VSWR @ Insertion Loss 3.0 Inp ut 1.75 O ut p ut 2.5 Loss (dB) VSWR Ratio 0 500 1000 1500 2000 2500 3000 3500 2.0 1.50 1.5 1.25 1.0 Fre que ncy (MHz ) 1.00 0 500 1000 1500 2000 2500 3000 3500 Fre que ncy (MHz ) 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. AT90-1283 Digital Attenuator 15.5 dB, 5-Bit, TTL Driver, DC-3.5 GHz Typical Performance Curves Attenuation Error, 0.5 dB Bit 1.0 Rev. V11 Attenuation Error, 1 dB Bit 1.0 0.5 Error (dB) 0.5 0.0 Error (dB) 0 500 1000 1500 2000 2500 3000 3500 0.0 -0.5 -0.5 - 1.0 -1.0 0 500 1000 1500 2000 2500 3000 3500 Fre que ncy (MHz ) Fre que ncy (MHz ) Attenuation Error, 2 dB Bit Attenuation Error, 4 dB Bit 1.0 1.0 0.5 Error (dB) 0.0 Error (dB) 0 500 1000 1500 2000 2500 3000 3500 0.5 -0.5 0.0 -1.0 -0.5 0 500 1000 1500 2000 2500 3000 3500 Fre que ncy (MHz ) Fre que ncy (MHz ) Attenuation Error, 8 dB Bit 1.0 Attenuation Error, Max. Attenuation 3.0 2.0 Error (dB) Error (dB) 0.5 1.0 0.0 0.0 -0.5 0 500 1000 1500 2000 2500 3000 3500 -1.0 0 500 1000 1500 2000 2500 3000 3500 Frequency (MHz) 4 Frequency (MHz ) 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. AT90-1283 Digital Attenuator 15.5 dB, 5-Bit, TTL Driver, DC-3.5 GHz Typical Performance Curves VSWR, 0.5 dB Bit Inp ut 1.6 Out p ut 1.6 Rev. V11 VSWR, 1 dB Bit Inp ut Out p ut VSWR Ratio VSWR Ratio 0 500 1000 1500 2000 2500 3000 3500 1.4 1.4 1.2 1.2 1.0 1.0 0 500 1000 1500 2000 2500 3000 3500 Frequency (MHz) Fre que ncy (MHz ) VSWR, 2 dB Bit I np ut 1.8 Out p ut VSWR, 4 dB Bit Inp ut 1.6 O ut p ut 1.6 VSWR Ratio VSWR Ratio 0 500 1000 1500 2000 2500 3000 3500 1.4 1.4 1.2 1.2 1.0 1.0 0 500 1000 1500 2000 2500 3000 3500 Fre que ncy (MHz ) Fre que ncy (MHz ) VSWR, 8 dB Bit I np ut 1.6 O ut p ut VSWR, Maximum Attenuation I np ut 1.8 O ut p ut 1.6 VSWR Ratio 1.4 VSWR Ratio 1.4 1.2 1.2 1.0 0 500 1 000 1 500 2000 2500 3000 3500 1.0 0 500 1000 1500 2000 2500 3000 3500 Fre que ncy (MHz ) Fre que ncy (MHz ) 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. AT90-1283 Digital Attenuator 15.5 dB, 5-Bit, TTL Driver, DC-3.5 GHz Rev. V11 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.