AT20-0263 Digital Attenuator Rev. V5 31.0 dB, 5-Bit, TTL Driver, DC-2.0 GHz Features Functional Schematic Attenuation: 1 dB steps to 31 dB Temperature Stability: 0.18 dB from 40C to C5 RF2 +85C Typical 16 dB +5V GND Low DC Power Consumption 8 dB -5V GND Surface Mount Package Integral TTL Driver C4 GND 4 dB Low Cost/High Performance C3 GND 50 Ohm Nominal Impedance 2 dB GND C2 Lead-Free CR-12 Package GND Orientation Mark C1 1 dB 260C Reflow Compatible PIN 16 GND RF1 PIN 1 RoHS* Compliant Description M/A-COMs AT20-0263 is a GaAs FET 5-bit digital attenuator with a 1 dB minimum step size and 31 dB Pin Configuration total attenuation. This attenuator and integral TTL driver is in a ceramic 16-lead surface mount pack- Pin No. Function Pin No. Function age. The AT20-0263 is ideally suited for use where accuracy, fast switching, very low power consump- 1 RF1 9 C5 tion and low intermodulation products are required. 2 GND 10 +5V Typical applications include dynamic range setting in 3 GND 11 -5V precision receiver circuits and other gain/leveling control circuits. Available with enhanced perform- 4 GND 12 C4 ance as fully hermetic version. Environmentally 5 GND 13 C3 screenable as P/N AT-263-PIN. 6 GND 14 C2 7 GND 15 C1 8 RF2 16 GND The metal bottom of the case must be connected to RF and DC ground. Ordering Information Part Number Package AT20-0263 Bulk Packaging Note: Reference Application Note M513 for reel size information. * 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: AT20-0263 Digital Attenuator Rev. V5 31.0 dB, 5-Bit, TTL Driver, DC-2.0 GHz 1 Electrical Specifications: T = 25C A Parameter Test Conditions Frequency Units Min Typ Max Reference Insertion Loss DC - 0.5 GHz dB 2.0 2.4 DC - 1.0 GHz dB 2.2 2.8 DC - 2.0 GHz dB 2.5 3.0 2 Attenuation Accuracy Any Single Bit DC - 1.0 GHz (0.25 +3% of atten setting in dB) dB Any Combination of Bits DC - 2.0 GHz (0.25 +3% of atten setting in dB) dB or 0.4 dB, whichever is greater VSWR DC - 2.0 GHz Ratio 1.6:1 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 +40 Up to +5 dBm 0.5 - 2.0 GHz dBm +48 Input IP2 For two-tone Input Power 0.05 GHz dBm +45 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 5.0 Vctl = 0 to 0.8V, or Vcc 2.1V to Vcc 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. Recommended PCB Configuration 3,4 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 5 Vin -0.5V Vin V + 0.5V CC Operating Temperature -40C to +125C Storage Temperature -65C to +150C 3. Exceeding any one or combination of these limits may cause permanent damage to this device. 4. M/A-COM does not recommend sustained operation near these survivability limits. 5. 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: