RoHS Compliant Digital Attenuator 31.5 dB, 6-Bit, TTL Driver, DC-2.0 GHz Features AT-107-PIN V7 Functional Schematic • Attenuation: 0.5 dB steps to 31.5 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 Ohm Nominal Impedance • Lead-Free CR-13 Package • 260°C Reflow Compatible Description M/A-COM’s AT-107-PIN is a GaAs FET 6-bit digital attenuator with a 0.5 dB minimum step size and 31.5 dB total attenuation. This attenuator and integral TTL driver is in a hermetically sealed ceramic 24lead surface mount package. The AT-107-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 GND 13 RF2 2 GND 14 GND 3 GND 15 GND 4 C16 16 GND 5 C8 17 GND 6 Vee (-5V to -8V) 18 GND 7 Vcc (+5V) 19 GND 8 C4 20 GND 9 C2 21 GND 10 C1 22 GND 11 C0.5 23 GND 12 GND 24 RF1 Ordering Information Part Number Package AT-107-PIN Bulk Packaging AT-107-TB Sample Test Board 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 AT-107-PIN V7 Electrical Specifications: TA = -55°C to +85°C 1 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 — — — — — — 3.2 3.6 4.0 Attenuation Accuracy 2 Any Single Bit DC - 1.0 GHz DC - 2.0 GHz DC - 1.0 GHz Any Combination of Bits ± (0.15 +3% of atten. setting in dB) dB ± (0.2 +3% of atten. setting in dB) dB ± (0.2 +3% of atten. setting in dB) dB or ± 0.4 dB, whichever is greater ± (0.2 +3% of atten. setting in dB) dB or ± 0.4 dB, whichever is greater DC - 2.0 GHz VSWR — DC - 2.0 GHz Ratio — — 1.8:1 Trise, Tfall 10% to 90% — ns — 9 — Ton, Toff 50% Control to 90/10% RF — ns — 45 — Transients In-Band (peak-peak) — mV — 40 — 1 dB Compression Input Power Input Power 0.05 GHz 0.5 - 2.0 GHz dBm dBm — — +21 +29 — — Input IP3 For two-tone Input Power Up to +5 dBm 0.05 GHz 0.5 - 2.0 GHz dBm dBm — — +35 +48 — — 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 Vctl Vctl Logic 0 (TTL) Logic 1 (TTL) — — V V 0.0 2.0 — — 0.8 5.0 Input Leakage Current (Low) 0 to 0.8V — µA — — 1.0 Input Leakage Current (High) 2.0 to 5.0V — µA — — 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 31.5 dB, 6-Bit, TTL Driver, DC-2.0 GHz AT-107-PIN V7 Recommended PCB Configuration Absolute Maximum Ratings 3,4 Parameter Absolute Maximum Max Input Power 0.05 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 -55°C to +125°C Storage Temperature -65°C to +150°C 3. 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. 4. 5. Control Inputs 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 C4 C3 C2 C1 Attenuation 0 0 0 0 0 0 Reference 0 0 0 0 0 1 0.5 dB 0 0 0 0 1 0 1 dB 0 0 0 1 0 0 2 dB 0 0 1 0 0 0 4 dB 0 1 0 0 0 0 8 dB 1 0 0 0 0 0 16 dB 1 1 1 1 1 1 31.5 dB Attenuation Accuracy vs. Frequency - 5 5 °C 5.0 Insertion Loss (dB) C5 Deviation from Nominal Atten (dB) + 2 5 °C C6 0 = TTL Low; 1 = TTL High Insertion Loss vs. Frequency + 8 5 °C Truth Table (Digital Attenuator) 4.0 3.0 2.0 1.0 0.0 0.0 0.5 1.0 1.5 2.0 Frequency (GHz) 1 dB 4 dB 2 dB 0 . 5 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 31.5 dB, 6-Bit, TTL Driver, DC-2.0 GHz AT-107-PIN V7 Typical Performance Curves RF1 VSWR vs. Frequency Attenuation Accuracy vs. Frequency 16 dB 1 dB 3 1. 5 dB 4 dB 8 & 16 dB Re f Loss & 0 . 5 dB 2 1.8 0.40 VSWR Deviation from Nominal Atten (dB) 8 dB 0.80 0.00 1.6 1.4 - 0.40 1.2 - 0.80 0.0 0.5 1.0 1.5 1 0.0 2.0 Frequency (GHz) 4 dB 1.0 1.5 2.0 Frequency (GHz) Lead-Free, CR-13 Ceramic Package† RF2 VSWR vs. Frequency 1 & 2 dB 0.5 8 dB 16 dB Re f Loss & 0 . 5 dB 2 VSW R 1.8 1.6 1.4 1.2 1 0.0 0.5 1.0 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.