Programmable Attenuators Models 3404T, 3406T & 3408T SmartStep® Programmable Attenuators dc to 6.0 GHz 1 Watt with built-in Microprocessor-Based Driver For Use with Weinschel 8210A Controller CELL CONFIGURATIONS: Model Number Features o Higher Frequency range to 6 GHz. o Wide Selection of Attenuation Ranges & Step Sizes - 0 to 15 dB in 1 dB steps - 0 to 55 dB in 1 dB steps - 0 to 55.75 in 0.25 dB steps - 0 to 103 dB in 1 dB steps - 0 to 70 dB in 10 dB steps o High Quality Construction & Connectors o Built-In TTL\CMOS Interface Driver Circuitry o Special Configurations Available Upon Request Description This line of intelligent programmable step attenuators with a built-in digital interface are designed to simplify the control and integration of these devices into subsystem and bench applications. This series of Programmable Step Attenuators is designed for use in automatic test equipment and OEM systems operating in the dc to 6 GHz frequency range. These models are available in many standard attenuation ranges and cell configurations. Each cell contains a doublepole, double-throw relay that provides a minimum loss or attenuated path for the RF signal. Microstrip circuitry and special compensation techniques produce flat attenuation versus frequency characteristics. The microstrip construction, using thick-film circuit elements, ensures product uniformity. To minimize RF leakage, the 3400T Series Attenuators are provided with gold-plated contact areas and feedthrough filters at each control terminal. Specifications NOMINAL IMPEDANCE: 50 Ω FREQUENCY RANGE: dc to 6.0 GHz MAXIMUM SWR: Frequency Range (GHz) dc - 3 3-6 222 SWR 1.30 1.45 NO. Attenuation Cells Range/Steps (dB) Cell Increments (dB) 3404T-15 4 15/1 1, 2, 4, 8 3404T-55 4 55/5 5, 10, 20, 20 3404T-70 4 70/10 10, 20, 20, 20 3406T-55 6 55/1 1, 2, 4, 8, 16, 24 3408T-55.75 8 55.75/0.25 3408T-103 8 103/1 0.25, 0.5, 1, 2, 4, 8, 16, 24 1, 2, 4, 8, 16, 24, 48* *48 dB cell comprised of two 24 dB cells INCREMENTAL ATTENUATION ACCURACY: Frequency Range (GHz) dc - 3 3-6 Accuracy +0.3 dB or 2% whichever is greater +0.4 dB or 3% whichever is greater MAXIMUM INSERTION LOSS (dB): Frequency Range (GHz) dc - 3 3-6 3404T-15 3404T-55 3404T-70 3406T-55 3408T-55.75 3408T-103 1.80 2.60 2.60 3.80 3.40 5.00 MONOTONICITY: dc to 6.0 GHz (minimum 1 dB change) POWER RATING: 1 watt average to 25°C ambient temperature, derated linearly to 0.25 watt @ 70°C. 50 watts peak (5 μsec pulse width; 1% duty cycle) POWER COEFFICIENT: <0.005 dB/dB/watt RATED SWITCH LIFE: 5 million cycles operations per cell @ 0 dBm SWITCHING TIME: 6 msec. maximum at nominal rated voltage RELEASE TIME: 5 msec maximum SWITCHING SPEED: 5 Hz maximum per relay OPERATING VOLTAGE: +12V (+13V maximum; +9V minimum) OPERATING CURRENT: 17 mA typical per cell @ +12V TEMPERATURE RANGE (Operating): -30°C to +70°C 5305 Spectrum Drive, Frederick, MD 21703-7362 s TEL: 301-846-9222, 800-638-2048 s Fax: 301-846-9116 web: www.aeroflex.com/weinschel s email: [email protected] Revision Date: 9/30/2012 Programmable Attenuators Specifications - Con’t DRIVER INTERFACE: Parameter VIL Low-level input V: Specification -0.5V min, 0.8V max VIH IPU VIN High-level input V: 2.0V min, 5.25V max Pullup current: 50 μA min, 400 μA max Supply Voltage: +12.0 to +15.0V IIN Supply current: 25 mA ICELL (digital section) Supply current: 16.6 mA @ 12V TEST DATA: Test data is available at additional cost. CONNECTORS: SMA female connectors per MIL-STD-348 interface dimensions - mate nondestructively with MIL-C-39012 connectors. INTERFACE CONNECTOR: 14 pin .025 square post header on .1 center. Mates with Amp connector 746285-2 or equivalent. CONSTRUCTION: Housing: Connectors: Aluminum Stainless steel body and beryllium copper contacts. Control terminals: Brass/Copper, Silver plated WEIGHT (Typical): 3406T-X: 99 g (3.5 oz) 3408T-X: 135 g (4.8 oz) PHYSICAL DIMENSIONS: “A” “B” 49.9 (1.93) “C” “D” Model No. 3408-X No. Cells 8 A 136.1 (5.36) 3406-X 6 105.7 (3.66) 93.0 (3.66) 5 EQ SPCS @ 15.20 (.60) = 76.0 (3.00) 98.0 (3.86) 3404-X 4 75.18 (2.96) 62.48 (2.46 3 EQ SPCS @ 15.20 (.60) = 45.72 (1.80) 67.56 (2.66) NOTE: B 123.4 (4.86) C 7 EQ SPCS @ 15.20 (.60) = 106.7 (4.20) D 128.5 (5.06) All dimensions are given in mm (inches) and are nominal, unless otherwise specified. 223 5305 Spectrum Drive, Frederick, MD 21703-7362 s TEL: 301-846-9222, 800-638-2048 s Fax: 301-846-9116 web: www.aeroflex.com/weinschel s email: [email protected] Revision Date: 9/30/2012