RoHS Compliant Digital Attenuator 31.5 dB, 6-Bit, TTL Driver, DC-2.0 GHz Features AT20-0107 V5 Functional Schematic 1 • Attenuation: 0.5 dB Steps to 31.5 dB • Temperature Stability: ±0.18 dB from –40ºC to +85ºC • • • • • • • Typ. Low DC Power Consumption Surface Mount Package Integral TTL Driver High Intercept Point Low Cost/High Performance Lead-Free CR-13 Package 260°C 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. Function Pin No. Function 1 GND 13 RF2 2 GND 14 GND 3 GND 15 GND 4 C16 16 GND 5 C8 17 GND 6 Vee 18 GND 7 Vcc 19 GND 8 C4 20 GND Ordering Information Part Number Package 9 C2 21 GND AT20-0107-PIN Bulk Packaging 10 C1 22 GND AT20-0107-TR 1000 piece reel 11 C0.5 23 GND AT20-0107-TB Sample Test Board 12 GND 24 RF1 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 AT20-0107 V5 Electrical Specifications: TA = +25°C2 Parameter Test Conditions Frequency Units Min Typ Max — DC - 2.0 GHz dB — 3.2 3.8 Any Bit or Combination of Bits DC - 2.0 GHz dB — — +(.3 +7% of atten.) -(.2 +1% of atten.) VSWR Full Range DC - 2.0 GHz Ratio — — 1.8:1 Trise, Tfall Ton, Toff Transients 10% to 90% 50% Control to 90%/10% RF In-band (peak to peak) — — — nS nS mV — — — 50 150 50 — — — 1 dB Compression 5 Input Power Input Power 50 MHz 0.5 - 2.0 GHz dBm dBm — — +21 +29 — — Input IP3 5 Two Tone Inputs up to +5 dBm 50 MHz 0.5 - 2.0 GHz dB dB — — +35 +48 — — Input IP2 5 Two Tone Inputs up to +5 dBm 50 MHz 0.5 - 2.0 GHz dB dB — — +75 +79 — — Vcc -Vee — — — — V V 4.5 -8.0 5.0 — 5.5 -5.0 Icc Vcc = 4.5 to 5.5V — mA — — 6.0 -Iee -Vee = -5.0 to -8.0V — mA — — 1.0 Insertion Loss 1,3,4 Attenuation Accuracy 1. 2. 3. 4. 5. 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 50Ω 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 10KΩ 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 6. 7. 8. Recommended PCB Configuration Absolute Maximum +27 dBm +34 dBm +5.5V -Vee -8.5V Control Voltage8 -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. 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 AT20-0107 V5 Truth Table (Digital Attenuator) 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 C16 C8 C4 C2 C1 C0.5 Attenuation 0 0 0 0 0 0 Loss, Reference 0 0 0 0 0 1 0.5 dB 0 0 0 0 1 0 1.0 dB 0 0 0 1 0 0 2.0 dB 0 0 1 0 0 0 4.0 dB 0 1 0 0 0 0 8.0 dB 1 0 0 0 0 0 16.0 dB 1 1 1 1 1 1 31.5 dB 0 = TTL Low; 1 = TTL High Insertion Loss vs. Frequency Attenuation Accuracy vs. Frequency + 8 5 °C + 2 5 °C - 4 0 °C 1 dB 4 2 dB 0 . 5 dB 4 dB 0.6 0.4 Deviation (dB) Loss (dB) 3 2 1 0.2 0 - 0.2 - 0.4 0 0 0.5 1 1.5 2 - 0.6 0 Frequency (GHz) 0.5 1 1.5 2 4 dB 8 & 16 dB Frequency (GHz) RF1 VSWR vs. Frequency Attenuation Accuracy vs. Frequency 16 dB 8 dB Loss & 0 . 5 dB 3 1. 5 dB 0.8 Deviation (dB) 0.6 Deviation (dB) 2 dB 1 dB 2 0.4 0.2 0 - 0.2 - 0.4 1.8 1.6 1.4 1.2 - 0.6 1 - 0.8 0 0 0.5 1 1.5 0.5 1 1.5 2 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 AT20-0107 V5 Typical Performance Curves Lead-Free, CR-13 Ceramic Package† RF2 VSWR vs. Frequency 1 & 2 dB 4 dB 8 dB Loss & 0 . 5 dB 16 dB Dev iatio n (dB ) 2 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.