Programmable Attenuators Models 3404, 3406, 3408 & 3409 Programmable Attenuators dc to 6.0 GHz 1 Watt with optional TTL Interface CELL CONFIGURATIONS: Model Number Cell Increments (dB) 3404-15 4 15/1 1, 2, 4, 8 3404-55 4 55/5 5, 10, 20, 20 3404-70 4 70/10 10, 20, 20, 20 3406-55 6 55/1 1, 2, 4, 8, 16, 24 3408-55.75 8 55.75/0.25 Features 3408-103 8 103/1 1, 2, 4, 8, 16, 24, 24, 24* 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 - 0 to 127 dB in 1 dB steps o High Quality Construction & Connectors o Special Configurations Available Upon Request 3409-127 9 127/1 1, 2, 4, 8, 16, 24, 24, 24, 24** Description The 3400 Series Programmable Step Attenuators are designed for use in automatic test equipment and OEM systems operating in the dc to 6 GHz frequency range. This series is available in many standard attenuation ranges and cell configurations. Custom designed configurations are available upon request. Each cell contains a double-pole, double-throw relay that provides a zero path or attenuated path for the RF signal. Microstrip circuitry and special compensation techniques produce flat attenuation versus frequency characteristics. The microstrip construction, using thin-film circuit elements, ensures product uniformity. To minimize RF leakage, the 3400 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 3-6 218 NO. Attenuation Cells Range/Steps (dB) 3406 & 3408 3409 1.30 1.45 1.40 1.55 0.25, 0.5, 1, 2, 4, 8, 16, 24 * 48 dB cell comprised of two 24 dB cells ** 24 dB Cell Selection: Cell No. (ON) Attenuation (dB) 2 24 - 47 2&9 48 - 71 1, 2, 9 72 - 95 1, 2, 5, 9 96 - 127 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 3404-15 3404-55 3404-70 3406-55 1.80 2.60 2.60 3.80 3408-55.75 3408-127 3408-103 3.40 5.00 3.80 5.80 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 CYCLING RATE: 5 Hz maximum per relay OPERATING VOLTAGE: +12 Vdc (+13 V maximum; +9 V minimum) OPERATING CURRENT: 17 mA typical per cell @ +12 V TEMPERATURE RANGE (Operating): -30°C to +70°C TEST DATA: Test data is available at additional cost. 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: 6/2/2014 Programmable Attenuators SPECIFICATIONS - Con’t CONNECTORS: SMA female connectors per MIL-STD-348 interface dimensions - mate nondestructively with MIL-C-39012 connectors. CONTROL TERMINALS: 0.040 inch. (1 mm) diameter solderable leads. CONSTRUCTION: Housing: Aluminum Connectors: Stainless steel body and beryllium copper contacts. Control terminals: Brass/Copper, Silver plated WEIGHT (Typical): 3404-X: 99 g (3.5 oz) 3406-X: 99 g (3.5 oz) 3408-X: 135 g (4.8 oz) 3409-X: 249 g (8.8 oz) INPUT CURRENT: 0.8 maximum IIN (VIN=2.4 V) = 55 μA IIN (VIN=3.85 V) = 280 μA SUPPLY CURRENT: ICC=25 mA maximum per cell CONTROL CONFIGURATION: SUPPLY VOLTAGE: VCC=+12.0 to +15 V Standard Unit: One terminal is connected to case ground and the remaining terminals are provided for activation of individual cells. Attenuation is fail-safe to "0" setting in the absence of a control voltage. Application of a voltage (+) to a particular cell causes it to switch to the attenuate position. MODELS WITH BUILT-IN DRIVERS: Most 3400s are available with an intelligent interface\driver cards. These are designed to interface with our 8210A Series Controllers which greatly simplifies computer control applications. Refer to Model 3404T, 3406T and 3408T data sheet for more information. Units with TTL Option: Units with this options are supplied with a very low profile connectorized TTL interface board mounted directly to the control terminals. This TTL interface option is available with a 10 pin ribbon cable connector and is supplied with a mating connector. Refer to Physical Dimensions for mating connector pin/wiring details. Two wires are specified for supply voltage and ground. The remaining wires will accept TTL control signals to activate or de-activate a particular attenuation cell. A TTL high will energize a cell to the high attenuation state, whereas a TTL low will maintain a cell in its zero attenuation state. TTL DRIVER SPECIFICATIONS: INTERFACE CONNECTOR: Option -1: 10 pin .025 square post header on .1 center, mates with Amp connector 746285-1 or equivalent INPUT VOLTAGE: VIN High= +2.0V minimum VIN Low = +5.0V typical Vcc maximum 0 minimum To order 3400 Series Attenuators with this option add -1 to basic model number for ribbon cable connector. Example: Model 3406-63 with a TTL interface would be 3406-63-1. Note: Control is non-latching and requires a continuous control signal for the period of time in which attenuation is required. 219 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: 6/2/2014 Programmable Attenuators PHYSICAL DIMENSIONS: A B Aeroflex / Weinschel C D Model No. 3409-X No. Cells 9 A 151.4 (5.96) B 123.4 (4.86) C 8 EQ SPCS @ 15.20 (.60) = 121.9 (4.20) D 143.8 (5.66) 3408-X 8 136.1 (5.36) 123.4 (4.86) 7 EQ SPCS @ 15.20 (.60) = 106.7 (4.20) 128.5 (5.06) 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: 220 All dimensions are given in mm (inches) and are nominal, unless otherwise specified. 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: 6/2/2014 Programmable Attenuators PHYSICAL DIMENSIONS: TTL OPTION -1 (3406 & 3408) option not available for 3409 Control Connector J3 Pin Locations: TTL Conn PIN No. (J3) 3408-103-1 dB (Cell) 3408-55.75-1 dB (Cell) 3406-55-1 dB (Cell ) 3404-15-1 dB (Cell) 3404-55-1 dB (Cell) 3404-70-1 dB (Cell ) 1 24* 0.25 1 2 24 0.5 2 1 5 10 2 10 3 1 1 20 4 4 20 4 2 20 2 8 8 20 5 4 20 4 16 NC NC NC 6 8 8 24 NC NC NC 7 16 16 NC NC NC NC 8 24* 24 NC NC NC NC 9 +Vcc +Vcc +Vcc +Vcc +Vcc +Vcc 10 COM COM COM COM COM COM * 48 dB cell comprised of two 24 dB cells NC = Not Connected NOTE: All dimensions are given in mm (inches) and are nominal, unless otherwise specified. 221 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: 6/2/2014