---
title: "GFT144 | 4 channel Programmable Delay Module"
date: 2025-01-02T07:09:08Z
modified: 2025-10-01T05:01:42Z
permalink: "https://www.berkeleynucleonics.com/gft144-4-channel-programmable-delay-module/"
type: page
status: publish
excerpt: ""
wpid: 19049
---

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     Datasheet
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#### GFT144 | 4 channel Programmable Delay Module

The GFT144 module is a Four Channel Programmable Delay module designed for component test, data de-skewing and timing adjustment. This compact module is well suited for OEM application with an interface via 2 standard connectors, a small size and only one power source.

The core of the module is made with a component (QFN 56 pins) specially designed by Greenfield Technology.

The required delay is accomplished by programming each delay channel via Serial Data Interface. The delay as an increment resolution of typical 0.5 ps in the programmable delay range of 7 ns per channel.

The channel input can be driven directly by differential LVPECL / CML or LVDS logic levels. The output is compatible with DC or AC LVPECL.

Typical GFT144 application would be to control from FPGA application the four timing of a device with high rate and very high resolution.

##### [Features](#features-section)

##### [Specifications](#specifications-section)

##### [Tech Resources](#technical-resources-section)

##### [Downloable Resources](#downloadable-section)

##### [Price List](#pricelist-section)

#### Overview

##### Features

- Four independent delay channels
- Programmable delay in 0.5 ps increments
- 7 ns delay range
- <3 ps input to output RMS jitter
- Up to 50 MHz channel rate
- LVPECL / CML / LVDS channel input
- LVPECL channel output with MUX mode
- Delay control via SPI link
- Operate from DC +5 V
- Compact module: 40 x 25 mm
- Option: Evaluation board with TTL outputs and USB control

##### Applications

- Components Test
- OEM Application
- Data de-skewing
- Timing adjustment

#### Specifications

##### Delay Channel

**Number**

4

**Range**

7 ns @ 150 MHz (or 5ns @ 200 MHz) clock input

**Resolution**

0.5 ps typical

**Linearity**

±50 ps maximum (without correction)

**Jitter RMS**

3 ps (input to output)

##### Channel Input

**Level**

LVPECL / CML / LVDS

**Minimum Width**

10 ns

Maximum Width

Up to 1 s

Connector

Samtec

##### Channel Output

 Level

LVPECL

Rate

DC to 50 MHz

External Load

50/50 Ω and 50 Ω (see page 3)

Rise Time

750 ps

**Fall Time**

750 ps

**Insertion Delay**

<5ns (input to output)

**Mux mode**

1 to other channel outputs

**Connector**

Samtec

##### Clock Input

**Level**

LVPECL

**Frequency**

150 MHz to 200 MHz

##### General Specifications

**Control**

SPI, Serial data interface

**Size**

40.0 x 25.0 x 10.0 mm

**Power V/A**

+5 V / 200mA max.

Power Connector

Samtec

##### Option : Evaluation Board

**Outputs**

TTL level (adjustable 1.5 to 5 V under 50 Ω)

**Trigger Mode**

Internal (from programmable timers) or external

Interface Control

USB to UART

Software Tool

The board is supplied with window software application which include a front panel graphical interface.

Power Adapter

External AC (90 -240V) to DC (+ 5V) adapter furnished

#### Technical Resources

[ GFT144 Datasheet](https://www.berkeleynucleonics.com/download/20567/?tmstv=1778700935)#### Downloadable Resources

 Downloadable resources such as datasheets, firmware, software, drivers and products manuals. Alternatively, you can browse resources directly by visiting our [downloads page](/downloads).

- [Product Datasheets](/downloads#ddg-datasheets)
- [Product Firmware](/downloads#ddg-firmware)
- [Product Software and Drivers](/downloads#ddg-softwaredrivers)
- [Product Manuals](/downloads#ddg-manuals)

#### Price Lists

 [ Berkeley Nucleonics Price List 2026](https://www.berkeleynucleonics.com/download/19881/?tmstv=1778700935)



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