VDS High-Speed Variable Delay Lines

The VDS family of high-speed variable delay lines is available in a dual in-line package for a variety of types in either standard or custom specifications.

Features

High-speed SMD delay lines that have achieved 40 step variability of delay time through a combination of 20 sections of ELMEC's own high-function, high-density delay line elements and high-increment variable structure.
Suitable for application in a broad range of high-speed logic elements such as the ECL 10KH or 10K series as well as TTL FAST, CMOS FAST and others of similar switching speed.
They are also suitable for use in a wide range of applications in analog circuits.

Common Specifications

Inherent Delay:	450ps max. at the minimum point within the variable range
Waveform Distortion:	Overshoot/preshoot under ±20%
Operating Temperature Range:	-10° C + 80° C
Storage Temperature Range:	-40° C + 120° C
Switching Life Expectancy:	Guaranteed within 100 cycles. (One cycle is defined as the movement of the knob from one end to the other)

Product Specifications

Part Number	Delay Time Range -0 to +20%	Increment Resolution (40 Steps) (1)*		Rise Time	Input Impedence	Output Impedence	DC Max. Voltage	Preferred Logic Family
Part Number	Delay Time Range -0 to +20%	1.75%	3.75%	Rise Time	Input Impedence	Output Impedence	DC Max. Voltage	Preferred Logic Family
VDS5010	0-5ns	88ps	163ps	0.8ns Max. (2)*	50 ± 10%	100 ± 10%	DC 3V Max. Constantly	ECL10KH ECL10K TTL-FAST CMOS-FACT
VDS1110	0-10ns	175ps	325ps	1.3ns Max. (2)*
VDS2110	0-20ns	350ps	650ps	2.3ns Max. (2)*
VDS3110	0-30ns	525ps	975ps	4.0ns Max. (2)*
VDS5020	0-5ns	88ps	163ps	2.0ns Max. (3)*	100 ± 10%	200 ± 10%	DC 4.5V Max. Voltage
VDS1120	0-10ns	175ps	325ps	2.5ns Max. (3)*
VDS2120	0-20ns	350ps	650ps	3.5ns Max. (3)*

(1)* Changes at a ratio of 1.75% and 3.25% occur alternately.
(2)* 20%-80%.
(3)* 10%-90%.
Delay time temperature coefficient ±100ppm/° C(However, VDS 1110,2110,2120,3110 are -400±200ppm/° C).

Package Dimensions & Pin Configurations

Unit:mm(inch)

Printable Version - High Resolution PDF

Application Notes:

Care is to be exercised in aqueous cleaning since the VDS Type is not hermetically sealed. We recommend hand soldering this part. A dust cover cap is provided on the top of the part.

Typical Applications and Termination Methods

(1) Analog circuit	r: Impedance of signal source Rin: Input adjustment resistance Zo: Characteristics impedance of internal Elements (=Output impedance) Ro: Internal adjustment resistance (=Zo) 2(r+Rin)=Zo=R
(2) ECL (-2V termination line used)
(3) PECL
(4) LVPECL
(5) TTL (FAST) For VDS**10 Type I_OH is approx. 45mA, I_OL is approx. 15mA
(6) TTL (FAST) For VDS**20 Type
(7) CMOS,LVCMOS Printable Version - High Resolution PDF
RoHS Compliance Status Compliance Status RoHS-compliant components are available.