RoHS Compliant Digital Attenuator 50.0 dB, 6-Bit, TTL Driver, DC-2.0 GHz Features AT20-0106 V7 Functional Schematic • Attenuation: 1 dB steps to 50 dB • Temperature Stability: ± 0.18 dB from –40°C to +85°C Typical • Low DC Power Consumption • Surface Mount Package • Integral TTL Driver • High Intercept Point • Low Cost/High Performance • 50 Ohm Nominal Impedance • Lead-Free CR-13 Package • 260°C Reflow Compatible Description M/A-COM’s AT20-0106 is a GaAs FET 6-bit digital attenuator with a 1 dB minimum step size and 50 dB total attenuation. This attenuator and integral TTL driver is in a ceramic 24-lead surface mount package. The AT20-0106 is ideally suited for use where accuracy, fast switching, 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-106-PIN. Pin Configuration Pin No. Function Pin No. 1 GND 13 RF2 2 GND 14 GND 3 GND 15 GND 4 C32 16 GND 5 C16 17 GND 6 Vee (-5V to -8V) 18 GND 7 Vcc (+5V) 19 GND 8 C8 20 GND 9 C4 21 GND 10 C2 22 GND 11 C1 23 GND 12 GND 24 RF1 Ordering Information Part Number Package AT20-0106-PIN Bulk Packaging AT20-0106-TR 1000 piece reel AT20-0106-TB Sample Test Board Function 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 50.0 dB, 6-Bit, TTL Driver, DC-2.0 GHz AT20-0106 V7 Electrical Specifications: TA = 25°C1 Parameter Test Conditions Frequency Units Min Typ Max Reference Insertion Loss — DC - 0.5 GHz DC - 1.0 GHz DC - 2.0 GHz dB dB dB — — — 3.5 3.9 4.2 3.8 4.2 4.6 Attenuation Accuracy 2 Any Single Bit Any Combination of Bits (For attenuation to 26 dB) Any Combination of Bits (For attenuation 27 to 50 dB) DC - 2.0 GHz DC - 2.0 GHz dB dB ± (0.3 +4% of atten. setting) ± (0.4 +4% of atten. setting) DC - 1.5 GHz dB ± (0.5 +5% of atten. setting) VSWR — 0.05 - 0.10 GHz 0.101 - 2.0 GHz Ratio Ratio — — — — 2.0:1 1.8:1 Trise, Tfall 10% to 90% — ns — — 50 Ton, Toff 50% Control to 90/10% RF — ns — — 150 Transients In-Band (peak-peak) — mV — 50 — 1 dB Compression Input Power Input Power 0.05 GHz 0.5 - 2.0 GHz dBm dBm — — +20 +28 — — Input IP3 For two-tone Input Power Up to +5 dBm 0.05 GHz 0.5 - 2.0 GHz dBm dBm — — +34 +46 — — Input IP2 For two-tone Input Power Up to +5 dBm 0.05 GHz 0.5 - 2.0 GHz dBm dBm — — +75 +79 — — Vcc — — V 4.5 5.0 5.5 Vee — — V -8.0 — -5.0 Icc Vcc = 4.5 to 5.5V Vctl = 0 to 0.8V, or Vcc – 2.1V to Vcc — mA — — 6.0 Iee Vee = -5.0 to -8.0V — mA — — 1.0 1. All specifications apply when operated with bias voltages of +5V for Vcc and –5.0V for Vee. 2. This attenuator is guaranteed monotonic. 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 50.0 dB, 6-Bit, TTL Driver, DC-2.0 GHz AT20-0106 V7 Recommended PCB Configuration Absolute Maximum Ratings 3,4 3. 4. 5. Parameter Absolute Maximum Max Input Power 0.5 GHz 0.5 - 2.0 GHz +27 dBm +34 dBm Supply Voltages Vcc Vee +5.5V -8.5V Control Voltage 5 -0.5V to Vcc +0.5V Operating Temperature -40°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. Truth Table (Digital Attenuator) Control Inputs Handling Procedures C6 C5 C4 C3 C2 C1 Attenuation 0 0 0 0 0 0 Reference 0 0 0 0 0 1 1 dB Static Sensitivity 0 0 0 0 1 0 2 dB 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 0 0 4 dB 0 0 1 0 0 0 8 dB 0 1 0 0 0 0 16 dB 1 0 0 0 0 0 32 dB 1 1 1 1 1 1 63 dB Please observe the following precautions to avoid damage: Typical Performance Curves 0 = TTL Low; 1 = TTL High Insertion Loss vs. Frequency Attenuation Accuracy vs. Frequency + 85 °C + 25 °C - 55 °C Deviation from Nominal Atten (dB) 1 dB 5 Insertion Loss (dB) 4 3 2 1 0 0.0 0.5 1.0 1.5 2.0 Frequency (GHz) 2 dB 4 dB 8 dB 0.60 0.40 0.20 0.00 - 0.20 - 0.40 - 0.60 0.0 0.5 1.0 1.5 2.0 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 50.0 dB, 6-Bit, TTL Driver, DC-2.0 GHz AT20-0106 V7 Typical Performance Curves RF1 VSWR vs. Frequency Attenuation Accuracy vs. Frequency 3 2 dB 4 0 dB 5 0 dB 4 dB 2 1.00 1.8 VSWR Deviation from Nominal Atten (dB) 16 dB 2.00 0.00 Re f Loss & 2 dB 1 dB 3 2 dB 8 & 16 dB 1.6 1.4 - 1.00 1.2 - 2.00 0.0 0.5 1.0 1.5 1 0.0 2.0 Frequency (GHz) 8 dB 1.0 1.5 2.0 Frequency (GHz) RF2 VSWR vs. Frequency Lead-Free, CR-13 Ceramic Package† 16 dB Re f Loss & 4 dB 0.5 1.0 2 0.5 3 2 dB 2 dB 1 dB VSW R 1.8 1.6 1.4 1.2 1 0.0 1.5 2.0 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.