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| RoHS Compliant Digital Attenuator 15.5 dB, 5-Bit, TTL Driver, DC-2.0 GHz Features * Attenuation: 0.5 dB Steps to 15.5 dB * Temperature Stability: 0.18 dB from -55C to +85C Typical * Low DC Power Consumption * Hermetic Surface Mount Package * Integral TTL Driver * 50 Nominal Impedance * Lead-Free CR-12 Package * 260C Reflow Compatible AT-283-PIN V6 Functional Schematic 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. 1 2 3 4 Function RF1 GND GND GND GND GND GND RF2 Pin No. 9 10 11 12 13 14 15 16 Function C5 +5V -5V C4 C3 C2 C1 GND Ordering Information Part Number AT-283-PIN MAAD-007229-0001TR MAAD-007229-0001TB 5 6 7 Package Bulk Packaging 1000 piece reel Sample Test Board 8 The metal bottom of the case must be connected to RF and DC ground. Note: Reference Application Note M513 for reel size information. Note: Die quantity varies. * Restrictions on Hazardous Substances, European Union Directive 2002/95/EC. 1 M/A-COM Inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. M/A-COM makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does M/A-COM assume any liability whatsoever arising out of the use or application of any product(s) or information. * North America Tel: 800.366.2266 / Fax: 978.366.2266 * Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300 * Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298 Visit www.macom.com for additional data sheets and product information. RoHS Compliant Digital Attenuator 15.5 dB, 5-Bit, TTL Driver, DC-2.0 GHz AT-283-PIN V6 Electrical Specifications: TA = 25C1 Parameter Reference Insertion Loss Attenuation Accuracy 2 Test Conditions DC-0.5 GHz DC-1.0 GHz DC-2.0 GHz Any Single Bit Any Combination of Bits DC-1.0 GHz DC-2.0 GHz 10% to 90% 50% Control to 90/10% RF In-band (peak--peak) Input Power Input Power 0.05 GHz 0.5-2.0 GHz 0.05 GHz 0.5-2.0 GHz 0.05 GHz 0.5-2.0 GHz DC-2.0 GHz DC-2.0 GHz Units dB dB dB Min -- -- -- Typ -- -- -- Max 2.2 2.5 2.9 (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 -- -- nS nS mV dBm dBm dBm dBm dBm dBm V V mA mA V V A A -- -- -- -- -- -- -- -- -- -- -- 4.5 -8.0 -- -- 0.0 2.0 -- -- -- -- 10 27 22 +20 +28 +40 +47 +53 +68 5.0 -- -- -- -- -- -- -- 1.6:1 1.7:1 -- -- -- -- -- -- -- -- -- 5.5 -5.0 5.0 1.0 0.8 5.0 1.0 1.0 VSWR Trise, Tfall Ton, Toff Transients 1 dB Compression 3 Input IP3 3 Input IP2 3 VCC VEE ICC IEE Vctl Vctl Input Leakage Current (Low) Input Leakage Current (High) 1. 2. 3. For two-tone input power up to +5 dBm For two-tone input power up to +5 dBm -- -- VCC = 4.5 to 5.5V Vctl = 0 to 0.8V, or VCC - 2.1V to VCC VEE = -5.0 to -8.0V Logic 0 (TTL) Logic 1 (TTL) 0 to 0.8V 2.0 to 5.0V All specifications apply when operated with bias voltages of +5.0V for VCC and -5.0V to -8.0V for VEE, and 50 unless otherwise specified. This attenuator is guaranteed monotonic. VEE = -5.0V for the typical numbers given. impedance at all ports 2 M/A-COM Inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. M/A-COM makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does M/A-COM assume any liability whatsoever arising out of the use or application of any product(s) or information. * North America Tel: 800.366.2266 / Fax: 978.366.2266 * Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300 * Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298 Visit www.macom.com for additional data sheets and product information. RoHS Compliant Digital Attenuator 15.5 dB, 5-Bit, TTL Driver, DC-2.0 GHz Absolute Maximum Ratings 4,5 Parameter Maximum Input Power 0.05 GHz 0.5-2.0 GHz Supply Voltages VCC VEE Control Voltage6 Operating Temperature Storage Temperature 4. 5. 6. AT-283-PIN V6 Recommended PCB Configuration Absolute Maximum +27 dBm +34 dBm +5.5V -8.5V -0.5V to VCC + 0.5V -55C to +125C -65C to +150C 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: Truth Table (Digital Attenuator) Control Inputs C1 0 1 0 0 0 0 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. C2 0 0 1 0 0 0 1 C3 0 0 0 1 0 0 1 C4 0 0 0 0 1 0 1 C5 0 0 0 0 0 1 1 Attenuation Reference 0.5 dB 1 dB 2 dB 4 dB 8 dB 15.5 dB Typical Performance Curves Reference Insertion Loss vs. Frequency @ Temperature + 8 5 C 5.0 + 2 5 C - 5 5 C 1 0 = TTL Low; 1 = TTL High Attenuation Accuracy vs. Frequency 0.5, 1, 2 dB Bits Deviation from Nom. Atten. (dB) 0.5 Insertion Loss (dB) 4.0 0.3 3.0 0.0 2.0 - 0.3 1.0 - 0.5 0.0 0 500 1000 1500 2000 0 500 1000 1500 2000 Frequency (MHz) 3 Frequency (MHz) M/A-COM Inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. M/A-COM makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does M/A-COM assume any liability whatsoever arising out of the use or application of any product(s) or information. * North America Tel: 800.366.2266 / Fax: 978.366.2266 * Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300 * Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298 Visit www.macom.com for additional data sheets and product information. RoHS Compliant Digital Attenuator 15.5 dB, 5-Bit, TTL Driver, DC-2.0 GHz 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 AT-283-PIN V6 Full Atte n. Deviation from Nom. Atten. (dB) 1.0 2.0 1.8 0.5 VSWR 1.6 1.4 0.0 1.2 - 0.5 0 500 1000 1500 2000 1.0 0 500 1000 1500 2000 Frequency (MHz) Frequency (MHz) VSWR vs. Frequency 4, 8 dB Bits and Full Attenuation Lead-Free, CR-12 Ceramic Package 2.0 1.8 VSW R 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 M/A-COM Inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. M/A-COM makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does M/A-COM assume any liability whatsoever arising out of the use or application of any product(s) or information. * North America Tel: 800.366.2266 / Fax: 978.366.2266 * Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300 * Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298 Visit www.macom.com for additional data sheets and product information. |
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