RoHS Compliant Digital Attenuator 30.0 dB, 4-Bit, TTL Driver, DC-2.0 GHz Features AT-233-PIN V4 Functional Schematic • Attenuation: 2 dB Steps to 30 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-12 Package • 260°C Reflow Compatible Description M/A-COM’s AT-233-PIN is a GaAs FET 4-Bit digital attenuator with a 2 dB minimum step size and 30 dB total attenuation. This attenuator and integral TTL driver is in a hermetically sealed ceramic 16-lead surface mount package. The AT-233-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 RF1 9 NC 2 GND 10 +5V 3 GND 11 -5V 4 GND 12 C4 5 GND 13 C3 6 GND 14 C2 7 GND 15 C1 8 RF2 16 GND Ordering Information Part Number Package AT-233-PIN Bulk Packaging MAAD-007228-0001TR 1000 piece reel MAAD-007228-0001TB Sample Test Board 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 30.0 dB, 4-Bit, TTL Driver, DC-2.0 GHz AT-233-PIN V4 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 — — — — — — 2.3 2.65 2.8 Attenuation Accuracy2 Any Single Bit DC - 1.0 GHz DC - 2.0 GHz Any Combination of Bits DC - 1.0 GHz DC - 2.0 GHz ± (0.2 + 3% of attenuation setting in dB) dB ± (0.2 + 3% of attenuation setting in dB) dB or ± 0.45 dB, whichever is greater ± (0.20 + 3% of attenuation setting in dB) dB ± (0.25 + 4% of attenuation setting in dB) dB or ± 0.45 dB, whichever is greater VSWR — DC - 2.0 GHz Ratio — — 1.7:1 Trise, Tfall 10% to 90% — ns — 10 — Ton, Toff 50% Control to 90/10% RF — ns — 30 — Transients In-Band (peak-peak) — mV — 35 — 1 dB Compression 3 Input Power 0.05 GHz 0.5 - 2.0 GHz dBm dBm — — +20 +28 — — Input IP3 3 For two tone input power Up to +5 dBm 0.05 GHz 0.5 - 2.0 GHz dBm dBm — — +40 +50 — — Input IP2 3 For two-tone input power Up to +5 dBm 0.05 GHz 0.5 - 2.0 GHz dBm dBm — — +45 +68 — — VCC — — V 4.5 5.0 5.5 VEE — — V -8.0 — -5.0 ICC VCC = 4.5 to 5.5 V Vctl = 0 to 0.8V, or VCC – 2.1V to VCC — mA — — 4.0 IEE VEE = -5.0 to –8.0V — mA — — 1.0 Vctl Logic 0 (TTL) Logic 1 (TTL) — — V V 0.0 2.0 — — 0.8 5.0 Input Leakage Current (Low) Input Leakage Current (High) 0 to 0.8V 2.0 to 5.0V — — µA µA — — — — 1.0 1.0 1. All specifications apply when operated with bias voltages of +5V for VCC and –5.0V to –8.0V for VEE, and 50 Ohm impedance at all ports unless otherwise specified. 2. This attenuator is guaranteed monotonic. 3. VEE = -5V for the typical numbers given. 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 30.0 dB, 4-Bit, TTL Driver, DC-2.0 GHz AT-233-PIN V4 Recommended PCB Configuration Absolute Maximum Ratings 4. 5. 6. 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 Voltage6 -0.5V to VCC + 0.5V Operating Temperature -55°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. 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 + 2 5 °C Control Inputs C4 C3 C2 C1 Attenuation 0 0 0 0 Reference 0 0 0 1 2 dB 0 0 1 0 4 dB 0 1 0 0 8 dB 1 0 0 0 16 dB 1 1 1 1 30 dB 0 = TTL Low; 1 = TTL High VSWR vs. Frequency Ref. Insertion Loss vs. Frequency + 8 5 °C Truth Table (Digital Attenuator) - 5 5 °C 2 dB 5.0 4 dB 8 dB 16 dB Re f Loss S ta te 4.0 1.80 3.0 VSWR Insertion Loss (dB) 2.00 2.0 1.60 1.40 1.0 1.20 0.0 0.0 0.5 1.0 1.5 2.0 Frequency (GHz) 1.00 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 30.0 dB, 4-Bit, TTL Driver, DC-2.0 GHz AT-233-PIN V4 Lead-Free CR-12 Ceramic Package† Typical Performance Curves Attenuation Accuracy vs. Frequency Dev ia tion fro m No m ina l Attenuation (dB ) Full Atte n 16 dB 8 dB 4 dB 2 dB 1.0 0.5 0.0 - 0.5 - 1.0 - 1.5 - 2.0 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.