AT90-1413 Digital Attenuator 15 dB, 4-Bit, TTL Driver, DC-4.0 GHz Functional Schematic Features • • • • • • • • Rev. V9 Attenuation: 1 dB Steps to 15 dB Single Positive Supply Contains Internal DC to DC Converter Integral TTL Driver 50 Ohm Impedance Test Boards Available Tape and Reel Packaging Available CSP-1 Package Description M/A-COM’s AT90-1413 is a GaAs FET 4-Bit digital attenuator with integral driver. Step size is 1 dB providing a 15 dB attenuation range. This device is in an PQFN plastic surface mount package. The AT90-1413 is suited for single supply applications where accuracy, fast speed, low power consumption and low costs are required. For dual supply designs without switching noise, use AT90-0413. Pin Configuration Ordering Information Part Number Package AT90-1413 Bulk Packaging AT90-1413TR 1000 piece reel AT90-1413-TB Sample Test Board Note: Reference Application Note M513 for reel size information. Pin No. Function Pin No. Function 1 GND 17 NC 2 C8 18 NC 3 C4 19 Vcc 4 C2 20 N/C 5 C1 21 Cp 6 GND 22 NC 7 GND 23 Cp 8 NC 24 NC 9 NC 25 Vee2 10 NC1 26 GND 11 GND 27 RF2 12 RF1 28 GND 13 GND 29 NC1 14 NC 30 Vee2 15 NC 31 NC 16 NC 32 Vcc 1. Pins 10 & 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. AT90-1413 Digital Attenuator 15 dB, 4-Bit, TTL Driver, DC-4.0 GHz Rev. V9 Electrical Specifications: TA = 25°C, Z0 = 50Ω Parameter Test Conditions Frequency Units Min Typ Max Insertion Loss — DC-2.5 GHz DC-4.0 GHz dB dB — — 2.0 2.5 2.5 3.0 Attenuation Accuracy Individual Bits or Combination of Bits DC-2.5 GHz DC-4.0 GHz dB dB — — — — ±(0.3+4% of atten setting) ±(0.3+6% of atten setting) VSWR Full Attenuation Range DC-2.5 GHz DC-4.0 GHz Ratio Ratio — — 1.5:1 1.8:1 1.8:1 2.0:1 Switching Speed 50% Cntl to 90%/10% RF 10% to 90% or 90% to 10% — — ns ns — — 75 20 150 50 1 dB Compression — 50 MHz 0.5-4.0 GHz dBm dBm — — +21 +29 — — Input IP3 Two-tone Inputs up to +5 dBm 50 MHz 0.5-4.0 GHz dBm dBm — — +35 +48 — — Vcc — — V 4.75 5.0 5.25 VIL VIH LOW-level input voltage HIGH-level input voltage — — V V 0.0 2.0 — — 0.8 5.0 lin (Input Leakage Current) Vin = VCC or GND — uA -1.0 — 1.0 Icc4 Vcc min to max, Logic “0” or “1” — mA — 6 10 For guaranteed start-up — mA — — 125 ΔIcc (Additional Supply Current Per TTL Input Pin) VCC = Max, Vcntrl = VCC - 2.1 V — mA — — 1.0 Switching Noise Generated from DC-DC Converter with recommended capacitors 3.5 MHz dBm — -93 — Thermal Resistance θjc — — °C/W — 15 — Turn-on Current 5 4. 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. 5. 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 startup. Recommended PCB Configuration9 Absolute Maximum Ratings 6,7 Parameter Absolute Maximum Max. Input Power 0.05 GHz 0.5 - 4.0 GHz +27 dBm +34 dBm VCC -0.5V ≤ VCC ≤ +6.0V Vin 8 -0.5V ≤ Vin ≤ VCC + 0.5V Operating Temperature -40ºC to +85ºC Storage Temperature -65ºC to +125ºC 6. Exceeding any one or combination of these limits may cause permanent damage to this device. 7. M/A-COM does not recommend sustained operation near these survivability limits. 8. Standard CMOS TTL interface, latch-up will occur if logic signal is applied prior to power supply. 9. Application Note S2083 is available on line at www.macom.com 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. AT90-1413 Digital Attenuator 15 dB, 4-Bit, TTL Driver, DC-4.0 GHz Rev. V9 Handling Procedures Please observe the following precautions to avoid damage: Truth Table (Digital Attenuator) C8 C4 C2 C1 Attenuation Static Sensitivity 0 0 0 0 Loss, Reference 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. 0 0 0 1 1.0 dB 0 0 1 0 2.0 dB 0 1 0 0 4.0 dB 1 0 0 0 8.0 dB 1 1 1 1 15.0 dB Moisture Sensitivity 0 = TTL Low; 1 = TTL High 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 VSWR @ Insertion Loss Insertion Loss R F In 2.50 1.40 2.00 1.20 1.50 1.00 1.00 0 500 1000 1500 2000 2500 3000 3500 4000 0 500 Fre que ncy (MHz ) 1000 1500 2000 2500 3000 3500 4000 Fre que ncy (MHz ) Attenuation Error, 1 dB Bit Attenuation Error, 2 dB Bit 0.30 0.30 0.20 0.20 Attenuation (dB) Attenuation (dB) R F Out 1.60 VSWR Attenuation (dB) 3.00 0.10 0.00 -0.10 -0.20 0.10 0.00 -0.10 -0.20 -0.30 -0.30 0 500 1000 1500 2000 2500 Fre que ncy (MHz ) 3000 3500 4000 0 500 1000 1500 2000 2500 3000 3500 4000 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. AT90-1413 Digital Attenuator 15 dB, 4-Bit, TTL Driver, DC-4.0 GHz Rev. V9 Typical Performance Curves Attenuation Error, 8 dB Bit 0.60 0.20 0.40 0.00 Attenuation (dB) Attenuation (dB) Attenuation Error, 4 dB Bit 0.20 0.00 -0.20 -0.40 -0.60 -0.20 0 500 1000 1500 2000 2500 3000 3500 0 4000 500 1000 Attenuation Error, Max. Attenuation 2000 2500 3000 3500 4000 VSWR, 1 dB Bit R F In 0.40 R F O ut 1.60 0.20 1.40 VSWR Attenuation (dB) 1500 Fre que ncy (MHz ) Fre que ncy (MHz ) 0.00 1.20 -0.20 -0.40 0 500 1000 1500 2000 2500 3000 3500 1.00 4000 0 500 1000 Fre que ncy (MHz ) 1500 2000 2500 3000 3500 4000 Fre que ncy (MHz ) VSWR, 2 dB Bit VSWR, 4 dB Bit R F In R F Out R F In 1.60 R F O ut 1.60 1.40 VSWR VSWR 1.40 1.20 1.20 1.00 0 500 1000 1500 2000 2500 Fre que ncy (MHz ) 3000 3500 4000 1.00 0 500 1000 1500 2000 2500 3000 3500 4000 Fre que ncy (MHz ) 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. AT90-1413 Digital Attenuator 15 dB, 4-Bit, TTL Driver, DC-4.0 GHz Rev. V9 Typical Performance Curves VSWR, Maximum Attenuation VSWR, 8 dB Bit R F In R F Out R F In 1.60 R F Out 1.60 1.40 VSWR V SW R 1.40 1.20 1.20 1.00 1.00 0 500 1000 1500 2000 2500 3000 3500 4000 Fre que ncy (MHz ) 0 500 1000 1500 2000 2500 3000 3500 4000 Frequency (MHz) CSP-1, 4 x 6 mm, 32-lead PQFN† † Reference Application Note M538 for lead-free solder reflow recommendations. 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.