AT-283-PIN Digital Attenuator 15.5 dB, 5-Bit, TTL Driver, DC-2.0 GHz Features Rev. V7 Functional Schematic • Attenuation: 0.5 dB Steps to 15.5 dB • Temperature Stability: ± 0.18 dB from –55°C to +85°C Typical • Low DC Power Consumption • Hermetic Surface Mount Package • Integral TTL Driver • 50 Ω Nominal Impedance • Lead-Free CR-12 Package • 260°C Reflow Compatible • RoHS* Compliant Description M/A-COM’s AT-283-PIN is a GaAs FET 5-bit digital attenuator with a 0.5 dB minimum step size and 15.5 dB total attenuation. This attenuator and integral TTL driver is in a hermetically sealed ceramic 16 lead surface mount package. The AT-283-PIN 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. Environmental screening is available. Contact the factory for information. Pin Configuration Pin No. Function Pin No. Function 1 RF1 9 C5 2 GND 10 +5V 3 GND 11 -5V 4 GND 12 C4 5 GND 13 C3 6 GND 14 C2 7 GND 15 C1 8 RF2 16 GND Ordering Information Part Number Package AT-283-PIN Bulk Packaging MAAD-007229-0001TR 1000 piece reel MAAD-007229-0001TB Sample Test Board The metal bottom of the case must be connected to RF and DC ground. Note: Reference Application Note M513 for reel size information. * Restrictions on Hazardous Substances, European Union Directive 2002/95/EC. 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. AT-283-PIN Digital Attenuator 15.5 dB, 5-Bit, TTL Driver, DC-2.0 GHz Rev. V7 Electrical Specifications: TA = 25°C1 Parameter Test Conditions Units Min Typ Max Reference Insertion Loss DC-0.5 GHz DC-1.0 GHz DC-2.0 GHz dB dB dB — — — — — — 2.2 2.5 2.9 Attenuation Accuracy 2 2. 3. DC-2.0 GHz DC-2.0 GHz ± (0.25 +3% of attenuation setting in dB) dB ± (0.25 +3% of attenuation setting in dB) dB or ± 0.4 dB, whichever is greater VSWR DC-1.0 GHz DC-2.0 GHz — — — — — — 1.6:1 1.7:1 Trise, Tfall Ton, Toff Transients 10% to 90% 50% Control to 90/10% RF In-band (peak—peak) nS nS mV — — — 10 27 22 — — — dBm dBm — — +20 +28 — — 1 dB Compression 3 1. Any Single Bit Any Combination of Bits Input Power Input Power 0.05 GHz 0.5-2.0 GHz Input IP3 3 For two-tone input power up to +5 dBm 0.05 GHz 0.5-2.0 GHz dBm dBm — — +40 +47 — — Input IP2 3 For two-tone input power up to +5 dBm 0.05 GHz 0.5-2.0 GHz dBm dBm — — +53 +68 — — VCC VEE — — V V 4.5 -8.0 5.0 — 5.5 -5.0 ICC VCC = 4.5 to 5.5V Vctl = 0 to 0.8V, or VCC - 2.1V to VCC mA — — 5.0 IEE VEE = -5.0 to –8.0V mA — — 1.0 Vctl Vctl Logic 0 (TTL) Logic 1 (TTL) V V 0.0 2.0 — — 0.8 5.0 Input Leakage Current (Low) Input Leakage Current (High) 0 to 0.8V 2.0 to 5.0V µA µA — — — — 1.0 1.0 All specifications apply when operated with bias voltages of +5.0V for VCC and –5.0V to -8.0V for VEE, and 50 Ω impedance at all ports unless otherwise specified. This attenuator is guaranteed monotonic. VEE = -5.0V for the typical numbers given. 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. AT-283-PIN Digital Attenuator 15.5 dB, 5-Bit, TTL Driver, DC-2.0 GHz Rev. V7 Recommended PCB Configuration Absolute Maximum Ratings 4,5 5. 6. Absolute Maximum +27 dBm +34 dBm VCC -0.5V ≤ VCC ≤ +7.0V VEE -8.5V ≤ VEE ≤ +0.5V VCC - VEE -0.5V ≤ VCC - VEE ≤ 14.5V Vin6 -0.5V ≤ Vin ≤ VCC + 0.5V Operating Temperature -55°C to +125°C Storage Temperature -65°C to +150°C 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. 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. Typical Performance Curves Reference Insertion Loss vs. Frequency @ Temperature + 8 5 °C + 2 5 °C Insertion Loss (dB) 4.0 3.0 2.0 1.0 0.0 500 1000 Fre que ncy (MHz ) Control Inputs C1 C2 C3 C4 C5 Attenuation 0 0 0 0 0 Reference 1 0 0 0 0 0.5 dB 0 1 0 0 0 1 dB 0 0 1 0 0 2 dB 0 0 0 1 0 4 dB 0 0 0 0 1 8 dB 1 1 1 1 1 15.5 dB 0 = TTL Low; 1 = TTL High Attenuation Accuracy vs. Frequency 0.5, 1, 2 dB Bits - 55 °C 5.0 0 Truth Table (Digital Attenuator) 1500 2000 Deviation from Nom. Atten. (dB) 4. Parameter Maximum Input Power 0.05 GHz 0.5-2.0 GHz 0.5 0.3 0.0 -0.3 -0.5 0 500 1000 1500 2000 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. AT-283-PIN Digital Attenuator 15.5 dB, 5-Bit, TTL Driver, DC-2.0 GHz Rev. V7 Typical Performance Curves Attenuation Accuracy vs. Frequency 4, 8 dB Bits and Full Attenuation VSWR vs. Frequency Reference Loss, 0.5, 1, 2 dB Bits 2.0 1.8 0.5 VSWR Deviation from Nom. Atten. (dB) F ull A t t en. 1.0 1.6 1.4 0.0 1.2 1.0 -0.5 0 500 1000 1500 0 2000 500 1000 1500 2000 Fre que ncy (MHz ) Fre que ncy (MHz ) VSWR vs. Frequency 4, 8 dB Bits and Full Attenuation Lead-Free, CR-12 Ceramic Package† 2.0 VSW R 1.8 1.6 1.4 1.2 1.0 0 500 1000 1500 2000 Frequency (MHz) † 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.