AT65-0413 Digital Attenuator, 15 dB, 4-Bit, TTL Driver, DC - 3.0 GHz Features n n n n n V 5.00 SO-16 Attenuation: 1.0 dB steps to 15 dB Low DC Power Consumption Integral TTL Driver 50 Ohm Impedance Temperature Stability: ±0.18 dB from -55°C to +85°C Typ. Description M/A-COM’s AT65-0413 is a GaAs FET 4-bit digital attenuator with a 1.0 dB minimum step size and a 15 dB total attenuation range. This device is in a SOIC-16 plastic surface mount package. The AT65-0413 is ideally suited for use where accuracy, fast speed, very low power consumption and low costs are required. Typical applications include dynamic range setting in precision receiver circuits and other gain/leveling control circuits. Electrical Specifications: TA = 25°C Parameter Insertion Loss Test Conditions — Frequency DC - 0.5 GHz DC - 2.0 GHz DC - 3.0 GHz Units dB dB dB Attenuation Accuracy Any Bit or Combination of Bits DC - 3.0 GHz dB VSWR Full Range DC - 3.0 GHz Ratio — — 1.6:1 nS nS mV — — — 10 30 35 50 150 — Trise, Tfall Ton, Toff Transients 10% to 90% 50% Cntl to 90%/10% RF In-Band Min. — — — Typ. 1.3 1.7 1.9 Max. 1.6 2.1 2.4 ± (.25 + 3% of attenuation) or ± .55 dB 1 dB Compression Input Power Input Power 0.05 GHz 0.5 - 3.0 GHz dBm dBm — — +20 +28 — — Input IP3 Two-tone inputs up to +5 dBm 0.05 GHz 0.5 - 3.0 GHz dBm dBm — — +40 +50 — — Input IP2 Two-tone inputs up to +5 dBm 0.05 GHz 0.5 - 3.0 GHz dBm dBm — — +45 +68 — — Vcc -VEE — — — V V 4.5 -8.0 5.0 -5.0 5.5 -4.75 Vctl 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) Icc 0 to 0.8 V — µA — — 20 2.0 to 5.0 V — µA — — 20 Vcc = 4.5 to 5.5V Vctl = 0 to 0.8V, or Vcc -2.1V to Vcc Vee = -5.0 to –8.0V — mA — — 4.0 — mA — — -1 -Iee Digital Attenuator, 15 dB, 4-Bit, TTL Driver, DC - 3.0 GHz AT65-0413 V 5.00 Absolute Maximum Ratings 1 Pin Configuration Parameter Absolute Maximum Pin # Function Pin # Function 1 GND 9 C2 2 RF1 10 C1 3 GND 11 GND +Vcc +5.5V 4 N/C 12 GND -Vee -8.5V 5 Vee 13 N/C Control Voltage -0.5 to Vcc + 0.5V 6 Vcc 14 GND Operating Temperature -40°C to +85°C 7 C4 15 RF2 Storage Temperature -65°C to +125°C 8 C3 16 GND Max. Input Power 0.05 GHz 0.5 - 3.0 GHz +27 dBm +34 dBm N/C = No Connection 1. Operation of this device above any one of these parameters may cause permanent damage. Recommended PCB Configuration Truth Table C1 C2 C3 C4 Attenuation 0 0 0 0 Loss, Reference 1 0 0 0 1.0 dB 0 1 0 0 2.0 dB 0 0 1 0 4.0 dB 0 0 0 1 8.0 dB 1 1 1 1 15.0 dB 0 = TTL Low; 1 = TTL High Typical Performance Curves +25°C -40°C Attenuation Accuracy @+25°C +85°C 2.5 Loss (dB) 2 1.5 1 0.5 0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 Frequency (GHz) Specifications subject to change without notice. n North America: Tel. (800) 366-2266 n Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298 n Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020 Visit www.macom.com for additional data sheets and product information. Deviation from Nom. Attenuation (dB) Typical Insertion Loss (dB) 8dB 15dB 2dB 1dB 4dB 1.5 2.0 2.5 0.4 0.2 0 -0.2 -0.4 0.0 0.5 1.0 3.0 Frequency (GHz) 2 Digital Attenuator, 15 dB, 4-Bit, TTL Driver, DC - 3.0 GHz AT65-0413 V 5.00 Typical Performance Curves Attenuation Accuracy @ -40°C 2dB 1dB 8dB 15dB 0.4 0.2 0 -0.2 -0.4 0.0 0.5 1.0 1.5 2.0 2.5 2dB 1dB 3.0 Deviation from Nom. Attenuation (dB) Deviation from Nom. Attenuation (dB) 4dB Attenuation Accuracy @ +85°C 15dB 0.2 0 -0.2 -0.4 0.0 0.5 1.0 1.5 2.0 2.5 3.0 Frequency (GHz) RF2 VSWR vs. Frequency RF1 VSWR vs. Frequency Insertion Loss 8dB 0.4 Frequency (GHz) 2 & 4 dB 4dB 1 dB 15 dB 8 dB 15 dB 1.3 Insertion Loss 1 dB 2, 4 & 8 dB 1.5 1.4 VSWR VSWR 1.2 1.3 1.2 1.1 1.1 1 1 0.0 0.5 1.0 1.5 2.0 2.5 3.0 Frequency (GHz) 0.0 0.5 1.0 1.5 2.0 2.5 3.0 Frequency (GHz) Ordering Information Part Number Package AT65-0413 SOIC-16 Lead Plastic AT65-0413TR Tape and Reel (1K Reel) AT65-0413-TB Unit mounted on a test board Specifications subject to change without notice. n North America: Tel. (800) 366-2266 n Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298 n Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020 Visit www.macom.com for additional data sheets and product information. 3