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| RoHS Compliant Digital Attenuator 31.5 dB, 6-Bit, TTL Driver, DC-2.0 GHz Features * Attenuation: 0.5 dB Steps to 31.5 dB * Temperature Stability: 0.18 dB from -40C to +85C * * * * * * * Typ. Low DC Power Consumption Surface Mount Package Integral TTL Driver High Intercept Point Low Cost/High Performance 1 AT20-0107 V5 Functional Schematic Lead-Free CR-13 Package 260C Reflow Compatible Description M/A-COM's AT20-0107 is a GaAs FET 6-bit digital attenuator with a 0.5 dB minimum step size and a 31.5 dB total attenuation. This attenuator and integral TTL driver is in a ceramic 24-lead surface mount package. The AT20-0107 is ideally suited for use where accuracy, fast speed, 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. Available with enhanced performance as fully hermetic version. Environmentally screenable as P/N AT-107-PIN. Pin Configuration Pin No. 1 2 3 4 5 6 Function GND GND GND C16 C8 Vee Vcc C4 C2 C1 C0.5 GND Pin No. 13 14 15 16 17 18 19 20 21 22 23 24 Function RF2 GND GND GND GND GND GND GND GND GND GND RF1 Ordering Information Part Number AT20-0107-PIN AT20-0107-TR AT20-0107-TB 7 8 Package Bulk Packaging 1000 piece reel Sample Test Board 9 10 11 12 Note: Reference Application Note M513 for reel size information. Note: Die quantity varies. The metal bottom of the case must be connected to RF and DC ground. * 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 31.5 dB, 6-Bit, TTL Driver, DC-2.0 GHz Electrical Specifications: TA = +25C2 Parameter Insertion Loss Attenuation Accuracy VSWR Trise, Tfall Ton, Toff Transients 1 dB Compression 5 Input IP3 5 Input IP2 5 Vcc -Vee Icc -Iee 1. 2. 3. 4. 5. 1,3,4 AT20-0107 V5 Test Conditions -- Any Bit or Combination of Bits Full Range 10% to 90% 50% Control to 90%/10% RF In-band (peak to peak) Input Power Input Power Two Tone Inputs up to +5 dBm Two Tone Inputs up to +5 dBm -- -- Vcc = 4.5 to 5.5V -Vee = -5.0 to -8.0V Frequency DC - 2.0 GHz DC - 2.0 GHz DC - 2.0 GHz -- -- -- 50 MHz 0.5 - 2.0 GHz 50 MHz 0.5 - 2.0 GHz 50 MHz 0.5 - 2.0 GHz -- -- -- -- Units dB dB Ratio nS nS mV dBm dBm dB dB dB dB V V mA mA Min -- -- -- -- -- -- -- -- -- -- -- -- 4.5 -8.0 -- -- Typ 3.2 -- -- 50 150 50 +21 +29 +35 +48 +75 +79 5.0 -- -- -- Max 3.8 +(.3 +7% of atten.) -(.2 +1% of atten.) 1.8:1 -- -- -- -- -- -- -- -- -- 5.5 -5.0 6.0 1.0 Above reference insertion loss. All specifications apply when operated with bias voltages of +5V for VCC and -5.0 V to -8.0 V for VEE and 50 impedance at all ports unless otherwise stated. This attenuator is guaranteed monotonic. For the attenuator to meet the guaranteed specifications, it is necessary to have a DC return on either RF1 or RF2. The DC return can be either a 10K resistor, or an RF choke. VEE = -5 V for the typical numbers given. Absolute Maximum Ratings 6,7 Parameter Max. Input Power 0.05 GHz 0.5 - 2.0 GHz +Vcc -Vee Control Voltage8 Operating Temperature Storage Temperature 6. 7. 8. Recommended PCB Configuration Absolute Maximum +27 dBm +34 dBm +5.5V -8.5V -0.5V to VCC +0.5V -40C 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. 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 31.5 dB, 6-Bit, TTL Driver, DC-2.0 GHz Handling Procedures Please observe the following precautions to avoid damage: AT20-0107 V5 Truth Table (Digital Attenuator) C16 0 0 0 0 0 0 1 1 C8 0 0 0 0 0 1 0 1 C4 0 0 0 0 1 0 0 1 C2 0 0 0 1 0 0 0 1 C1 0 0 1 0 0 0 0 1 C0.5 0 1 0 0 0 0 0 1 Attenuation Loss, Reference 0.5 dB 1.0 dB 2.0 dB 4.0 dB 8.0 dB 16.0 dB 31.5 dB 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 Insertion Loss vs. Frequency 0 = TTL Low; 1 = TTL High Attenuation Accuracy vs. Frequency + 8 5 C 4 0.6 3 0.4 + 2 5 C - 4 0 C 1 dB 2 dB 0 . 5 dB 4 dB Deviation (dB) 0 0.5 1 1.5 2 Loss (dB) 0.2 0 - 0.2 - 0.4 2 1 0 - 0.6 0 0.5 1 1.5 2 Frequency (GHz) Frequency (GHz) Attenuation Accuracy vs. Frequency 16 dB 0.8 0.6 8 dB 3 1. 5 dB RF1 VSWR vs. Frequency Loss & 0 . 5 dB 2 1.8 1.6 1.4 1.2 1 2 dB 1 dB 4 dB 8 & 16 dB Deviation (dB) 0.4 0.2 0 - 0.2 - 0.4 - 0.6 - 0.8 0 0.5 1 1.5 2 Deviation (dB) 0 0.5 1 1.5 2 Frequency (GHz) Frequency (GHz) 3 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 31.5 dB, 6-Bit, TTL Driver, DC-2.0 GHz Typical Performance Curves RF2 VSWR vs. Frequency AT20-0107 V5 Lead-Free, CR-13 Ceramic Package Loss & 0 . 5 dB 16 dB 1 & 2 dB 2 4 dB 8 dB Dev iatio n (dB ) 1.8 1.6 1.4 1.2 1 0 0.5 1 1.5 2 Frequency (GHz) 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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