Attenuator 10 to 1000 MHz Technical Data UTF-040 Features Description Pin Configuration • 40 dB Attenuation Range The UTF-040 is a thin-film voltagecontrolled RF attenuator that operates from 10 to 1000 MHz. Utilizing PIN diodes, attenuation over frequency typically has ±0.5 dB flatness over the complete control voltage range. On the average, the attenuation will change roughly 5 dB for 2-volt increment. The UTF-040 is available in either the TO-8 hermetic case or connectorized TC-1 package. TO-8F • 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 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) Symbol Characteristic BW — Frequency Range Attenuation, Min. (VC = –10 V) 30-250 MHz 10-500 MHz 10-1000 MHz Insertion Loss, Max. (VC = +0 V) 10-500 MHz 10-1000 MHz VSWR (Worst Case In Attenuation Range) 10-500 MHz 10-1000 MHz Flatness Over Frequency (to 20 dB) Max Small Signal Input Level 10-50 MHz 50-1000 MHz Switching Speed (10% to 90%) (ON to OFF or OFF to ON) Bias Voltage Bias Current Control Voltage Control Current — — — — — — — — — Typical Guaranteed Specifications TC = 25°C TC = 0 to 50°C TC = –55 to +85°C Unit 10-1000 10-1000 10-1000 MHz — — — 40 35 30 — — — dB dB dB — — 2.2 2.5 — — dB dB — — ± .5 2.0:1 2.5:1 — — — — — — dB — — .4 0 +6.0 — — — — dBm dBm ms +15 10 0 to –12 0 to 75 +15 10 0 to –10 0 to 75 — — — — VDC mA VDC mA 3 Typical Performance At 25°C Temperature (at +15 VDC unless otherwise noted) Attenuation Control Current, mA –10 –20 –30 –40 Output VSWR –50 Control Voltage 10 Output VSWR Attenuation, dB 0 0 20 30 40 f = 500 MHz –2.9V 2.0 0V –1.7V 1.5 1.0 50 0 –2 –4 –6 –8 –5.0V –10V –10 0 200 Control Voltage, Volts 400 600 800 1000 Frequency, MHz Attenuation Input VSWR 0V –5.0V –10V –1.7V Attenuation, dB 2.0 –2.9V 1.5 1.0 0V –1.8V –2.2V –2.9V 10 20 –4.15V –5.0V –6.0V –10V 30 40 50 400 600 800 1000 0 200 Frequency, MHz 400 600 Frequency, MHz Phase Phase, Degrees 200 100 80 –5.0V –10V 60 –6.0V –4.15V 40 20 0 –20 0 200 400 600 800 Frequency, MHz Switching Time +7 +2 0 –3 –8 Detected RF 0 Control Pulse Volts Input VSWR 0 f = 500 MHz ON OFF 200 µsec Sweep Time, µsec OFF –2.9V –2.2V –1.8V 1000 800 1000 4 Product Options UTF – 025 R Model Number Prefix UTFPPF- Model Number Screening Option blank = No Screening required R = R-Series Screening For more information on R-Series screening, see Reliability Screening, Pub. 5963-3240E. UTFC – 025 – 1 Model Number Prefix UTFC- Model Number Connector 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). Note: No R-Series screening is available in the TC-1 case as the case is non-hermetic. 5 Case Drawings TO-8F .300 TYP .175 .017 +.002 - 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