AT20-0273 Digital Attenuator Rev. V6 32.0 dB, 2-Bit, TTL Driver, DC-2.0 GHz Features 1 Functional Schematic Attenuation: 16 dB steps to 32 dB Temperature Stability: 0.18 dB from 40C to +85C Typical RF1 RF2 Low DC Power Consumption GND GND Surface Mount Package Integral TTL Driver 16 dB GND GND Low Cost/High Performance GND GND 50 Ohm Nominal Impedance 16 dB Vee GND Lead-Free CR-11 Package C1 Vcc 260C Reflow Compatible GND Orientation Mark NC RoHS* Compliant PIN 16 NC C2 PIN 1 Description M/A-COMs AT20-0273 is a GaAs FET digital 1. Use the C1 control for a single 16-dB bit. attenuator with a 16 dB minimum step size and 32 dB total attenuation. This attenuator and integral TTL driver is in a sealed ceramic 16-lead surface mount package. The AT20-0273 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. Available with en- hanced performance as fully hermetic version. Envi- Pin Configuration ronmentally screenable as P/N AT-273-PIN. Pin No. Function Pin No. Function 1 C2 9 RF1 2 GND 10 GND 3 C1 11 GND 4 GND 12 GND 5 GND 13 Vee Ordering Information 6 GND 14 Vcc 7 GND 15 NC Part Number Package 8 RF2 16 NC AT20-0273 Bulk Packaging Note: Reference Application Note M513 for reel size The metal bottom of the case must be connected to RF and DC information. ground. * Restrictions on Hazardous Substances, European Union Directive 2002/95/EC. 11 1 M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. Visit www.macom.com for additional data sheets and product information. For further information and support please visit: AT20-0273 Digital Attenuator Rev. V6 32.0 dB, 2-Bit, TTL Driver, DC-2.0 GHz 2 Electrical Specifications: T = 25C A Parameter Test Conditions Frequency Units Min Typ Max Reference Insertion Loss DC - 0.5 GHz dB 1.2 1.6 DC - 1.0 GHz dB 1.3 1.7 DC - 2.0 GHz dB 1.5 1.9 3 Attenuation Accuracy C1 Bit DC - 2.0 GHz 3% of attenuation setting in dB Full Attenuation (32 dB) DC - 0.5 GHz 3% of attenuation setting in dB DC - 1.0 GHz 3% of attenuation setting in dB, -1 dB DC - 2.0 GHz 3% of attenuation setting in dB, -3 dB VSWR DC - 2.0 GHz Ratio 1.4:1 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 0.05 GHz dBm +20 Input Power 0.5 - 2.0 GHz dBm +28 Input IP3 For two-tone Input Power 0.05 GHz dBm +38 Up to +5 dBm 0.5 - 2.0 GHz dBm +48 Input IP2 For two-tone Input Power 0.05 GHz dBm +44 Up to +5 dBm 0.5 - 2.0 GHz dBm +68 Vcc V 4.5 5.0 5.5 Vee V -8.0 -5.0 Icc Vcc = 4.5 to 5.5V mA 2.0 Vctl = 0 to 0.8V, or Vcc 2.1V to Vcc Iee Vee = -5.0 to -8.0V mA 1.0 2. All specifications apply when operated with bias voltages of +5V for Vcc and 5.0V for Vee. 3. This attenuator is guaranteed monotonic. 4,5 Absolute Maximum Ratings Parameter Absolute Maximum Max Input Power 0.5 GHz +27 dBm 0.5 - 2.0 GHz +34 dBm V -0.5V V +7.0V CC CC V -8.5V V +0.5V EE EE V - V -0.5V V - V 14.5V CC EE CC EE 6 Vin -0.5V Vin V + 0.5V CC Operating Temperature -40C to +125C Storage Temperature -65C to +150C 4. Exceeding any one or combination of these limits may cause permanent damage to this device. 5. M/A-COM does not recommend sustained operation near these survivability limits. 6. Standard CMOS TTL interface, latch-up will occur if logic signal is applied prior to power supply. 22 2 M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. Visit www.macom.com for additional data sheets and product information. For further information and support please visit: