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.
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
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
Downloadable Resources
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