Attenuator 5 to 1000 MHz Technical Data UTF-015 Features Description Pin Configuration • < 1.6:1 VSWR The UTF-015 is a thin-film voltagecontrolled RF attenuator that offers a continuously-variable attenuation of up to 20 dB from 5 to 1000 MHz. Utilizing PIN diodes, attenuation over frequency is typically ±0.5 dB flat over the complete control voltage range. On the average, the attenuation will change roughly 5 dB per 2-volt increment. The UTF-015 is available in either the TO-8 hermetic case or connectorized TC-1 package. TO-8F • 20 dB of Attenuation • Negative Control Voltage Applications • Open and Closed Loop Gain Control • AGC Circuits Schematic RFIN GROUND RF IN RF OUT V+ CONTROL TC-1 RF IN RF OUT V+ Maximum Ratings RFOUT Parameter DC Voltage Continuous RF Input Power Operating Case Temperature Storage Temperature “R” Series Burn-In Temperature Weight: (typical) 2.1 grams Maximum +17/–15 Volts +23.0 dBm –55 to +125°C –62 to +150°C +125°C 2 Electrical Specifications (Measured in 50 Ω system @ +15 VDC nominal unless otherwise noted) Typical Guaranteed Specifications TC = 25°C TC = 0 to 50°C TC = –55 to +85°C Symbol Characteristic BW — — Frequency Range Attenuation, Min. (VC = –10 V) Insertion Loss, Max. (VC = 0 V) 5-500 MHz 500-1000 MHz VSWR (Worst Case In Attenuation Range) Flatness Over Frequency Switching Speed (10% to 90%) Bias Current Control Voltage Control Current — — — — — — Unit 5-1000 20.0 5-1000 15.0 5-1000 — MHz dB 1.5 2.0 1.5:1 2.0 2.5 2.0:1 — — — dB dB — ± .5 .5 7 0 to –10 0 to 7 — — — 0 to –10 — — — — — — dB ms mA VDC mA Typical Performance At 25°C Attenuation Control Current, mA –1.0 –1.5 –2.0 0 Attenuation, dB Vc Ic 10 Control Voltage Attenuation –2.5 20 f = 500 MHz Input VSWR 2.5 0V –4.4V 10 VSWR –5 –7.4V –8V –10V 20 30 30 –4 –6 –8 0 –10 200 400 Control Voltage, Volts 600 800 2.0 Control Voltage –10V –8V 0V –7.4V 1.5 1.0 1000 0 200 Frequency, MHz Output VSWR Control Voltage Phase 2.5 40 2.0 Control Voltage –10V –4.4V 0V –7.4V 1.5 1.0 0 200 400 600 800 400 600 Frequency, MHz Phase, Degrees –2 –10V –8V 30 20 –7.4V –4.4V 10 0V 0 0 1000 200 400 600 Frequency, MHz Frequency, MHz Switching Time Control Pulse 0 to –10V ON (0V) f = 500 MHz Detected RF 0 VSWR Attenuation, dB 0 0 100 Microseconds per Division OFF OFF (–10V) Sweep Time, microseconds 800 1000 800 1000 3 Product Options UTF – 025 R Model Number Prefix UTFPPF- Screening Option blank = No Screening required R = R-Series Screening Model Number For more information on R-Series screening, see Reliability Screening, Pub. 5963-3240E. UTFC – 025 – 1 Model Number Prefix UTFCConnector Option For TC-1 case, the only connector option available is the -1. The -1 option consists of an SMA Female connector on both the input and output (see note). Model Number Note: No R-Series screening is available in the TC-1 case as the case is non-hermetic. Case Drawings TO-8F .300 TYP .175 +.002 .017 - 001 .150 TYP GROUND RF OUT 3 4 .150 TYP 1 45 .031 .031 GLASS RING .060 DIA TYP (4X) 2 .50 .450 DIA DIA MAX 0.185 ±0.015 RF IN 5 CASE GROUND CONTROL V+ .075 APPROXIMATE WEIGHT 2.1 GRAMS NOTES (UNLESS OTHERWISE SPECIFIED): 1. DIMENSIONS ARE SPECIFIED IN INCHES 2. TOLERANCES: xx ± .02 xxx ± .010 Case Drawings TC-1 .820 1.000 RFOUT RF IN V+ .460 .890 PRODUCT MARKING AREA AGC (IF REQUIRED) .38 (2) PL .460 DC INPUT .500 .350 .310 .890 .350 SMA JACK (FEMALE) (2) PL .310 .19 .100 GND .24 .640 .180 .905 2-56 UNC-2B x .15 DEEP THREADED INSERT (4) PL .250 .095 .570 TYPICAL WEIGHT WITH CONNECTORS = 21.5 GRAMS NOTES: 1. THE TC-1 CASE IS A NON-HERMETIC CASE. 2. THE ONLY CONNECTOR OPTION AVAILABLE FOR THE TC-1 CASE IS THE –1, SMA FEMALE CONNECTORS AT BOTH INPUT AND OUTPUT PORTS. NOTES (UNLESS OTHERWISE SPECIFIED): 1. DIMENSIONS ARE SPECIFIED IN INCHES 2. TOLERANCES: xx ± .02 xxx ± .010 Contact Teledyne Microwave Solutions: 650-691-9800 650-962-6845 fax Check for updates: www.teledynemicrowave.com