3D9950 8-BIT ADJUSTABLE, COAXIAL PASSIVE DELAY LINE (SERIES 3D9950) FEATURES PACKAGE Delay adjustable in 255 steps Delay step sizes of 0.25ns to 1ns available Fast rise time for high frequency applications I/O reversible BNC female connectors Meets or exceeds MIL-D-23859C FUNCTIONAL DESCRIPTION PIN DESCRIPTIONS The 3D9950 device is a single-input, single-output, passive delay line. IN Signal Input (BNC) The signal input (IN) is reproduced at the output (OUT), shifted by a time OUT Signal Output (BNC) (TD) which can be adjusted via eight binary-weighted switches. The value of these switches, multiplied by the device dash number, determines the device delay (referenced to the delay with all the switches off). The device is offered in 50-ohm and 75-ohm impedance versions. SERIES SPECIFICATIONS Delay Tolerance: Minimum Delay (all switches off): Impedance: Ripple in pass-band: Dielectric breakdown: Operating temp: Temperature coeff: Case dimensions: DASH NUMBER SPECIFICATIONS 2% Part Number 2.5ns 50Ω or 75Ω Approx. 0.2dB 100 VDC -65C to +125C <100 PPM/C 8.5” W x 8.0” D x 2.0” H 3D9950-0.25A 3D9950-0.5A 3D9950-1A 3D9950-0.25Y 3D9950-0.5Y 3D9950-1Y Delay Step (ns) 0.25 0.5 1.0 0.25 0.5 1.0 Delay Range (ns) 63.75 127.5 255.0 63.75 127.5 255.0 Impedance (Ω) 50 50 50 75 75 75 3dB B.W. (MHz) 125 125 125 125 125 125 Note: 3dB BW measured at maximum delay (21.6cm x 20.3cm x 5.1cm) 2014 Data Delay Devices Doc #14023 1/5/2015 DATA DELAY DEVICES, INC. 3 Mt. Prospect Ave. Clifton, NJ 07013 1 3D9950 PASSIVE DELAY LINE TEST SPECIFICATIONS TEST CONDITIONS INPUT: Ambient Temperature: Input Pulse: Source Impedance: Rise/Fall Time: Pulse Width: Period: 25 C 3 C High = +0.5V typical Low = -0.5V typical 50 Max. 3.0 ns Max. (measured at 10% and 90% levels) PW IN = 100ns PERIN = 1000ns o o OUTPUT: Rload: Cload: Threshold: 10M 10pf 50% (Rising & Falling) NOTE: The above conditions are for test only and do not in any way restrict the operation of the device. RIN OUT PULSE GENERATOR IN DEVICE UNDER TEST (DUT) IN OUT TRIG TRIG 50 RIN = ROUT = ZLINE OSCILLOSCOP E ROUT Test Setup (Delay Measurements) OUT RF IN R Coax IN A Coax 50-OHM SIGNAL DIVIDER OUT R (HP 35676 -66301) OUT A OUT B IN Coax NETWORK ANALYZER (HP 3577A) IN B IMPEDANCE MATCHING NETWORK IMPEDANCE MATCHING NETWORK Coax IN GND DEVICE UNDER TEST OUT GND Test Setup (Frequency Response) Doc #14023 1/5/2015 DATA DELAY DEVICES, INC. Tel: 973-773-2299 Fax: 973-773-9672 http://www.datadelay.com 2