CSDA-1

CLOCK SIGNAL DISTRIBUTION AMPLIFIER

The CSDA-1 is a high performance clock signal distribution and isolation amplifier. The device is used to provide distribution of 1 PPS, 5 MHz and 10 MHz signals. The CSDA-1 is a modular unit implemented with customizable functionality with different options. The pulse distribution modules can drive 50-ohm cables. The phase noise of the RF distribution modules is exceptionally low with excellent channel-to-channel isolation. Each module contains an output level monitor LED located on the front panel. Inputs and outputs are matched to 50 ohms to obtain better than 25 dB return loss. All RF outputs are AC coupled and the grounds are DC isolated to reduce the effect of ground loops.
All options include AC and DC operation.

  • Features
  • Applications
  • Specifications
  • Options
  • Distributes:
  • 1 PPS, 5 MHz & 10 MHz signals
  • High Isolation
  • Low phase noise
  • Very good stability
  • Signal fault alarm
  • AC and DC voltage operation
  • Clock signal applications
  • Atomic frequency standards
  • Atomic time scales
  • Laboratory frequency distribution
  • Reference frequency distribution
  • Time synchronization

Pulse Distribution Module

PARAMETER

CONDITIONS

TYP

UNITS

Rise time

10 - 90 %

0.8

ns

Fall time

10 - 90 %

0.8

ns

Propagation delay

50 ohm load

7

ns

Differential delay

Channel - Channel

100

ps

Input High Level

Input Low Level

Input signal into 50 Ω load

Input signal into 50 Ω load

-

-

V

 

Frequency range

50% duty cycle

100

MHz

Temp-delay coefficient

0 - 50 ºC

3

ps/ºC

Impedance

Input

Output

50

10

Ω

Output High Level

Output Low Level

50 Ω load, 10 Ω output

50 Ω load, 10 Ω output

4.3

0.1

V

 

Impedance

Input

Output

50

50

Ω

Output High Level

Output Low Level

50 Ω load, 50 Ω output

50 Ω load, 50 Ω output

2.6

0.1

V

 

 

5 MHz Distribution Module

PARAMETER

CONDITIONS

TYP

UNITS

Max Input Level

1 dB compression

17

dBm

Bandwidth

+/- 1 dB (Due to X2)

0.6

MHz

Gain

@ 5 MHz

0.5

dB

Impedance

Input

Output

50

50

Ω

Return Loss

Input (S11)

Output(S22)

-27

-30

dB

Distortion

+13 dBm

-45

dBc

Isolation

Output to output

Output to input

130

140

dB

Phase Noise
Referred to the input

1 Hz

10 Hz

100 Hz

>10 kHz

-150

-160

-170

-170

dBc/Hz

Temp-delay Coefficient

0 - 50 ºC

1.5

ps/ºC

 

10 MHz Distribution Module

PARAMETER

CONDITIONS

TYP

UNITS

Output Power Level

5 MHz input +13 dBm

14

dBm

Bandwidth

+/- 1 dB

0.6

MHz

Impedance

output

50

Ω

Return loss

output (S22) 10 MHz

-25

dB

Distortion

+13 dBm

-45

dBc

Isolation

output to output

130

dB

Phase noise

Referred to 5 MHz input

1 Hz

10 Hz

100 Hz

>10 kHz

-148

-158

-165

-170

dBc/Hz

Temp-delay coefficient

0 - 50 ºC

5

ps/ºC

 

Product NameDescription
CSDA-1

Module 1 = 1PPS Input – Five Buffered Outputs
Module 2 = 5 MHz Input – Five Buffered Outputs
Module 3 = Five 10 MHz Outputs

CSDA-1A

Module 1 = 1PPS Input – Five Buffered Outputs
Module 2 = 5 MHz Input – Five Buffered Outputs
Module 3 = Five Buffered Outputs from Module 2

CSDA-1B

Module 1 = 1PPS Input – Five Buffered Outputs
Module 2 = One Input (1-50 MHz) – Five Buffered Outputs
Module 3 = One Input (1-50 MHz) – Five Buffered Outputs

CSDA-1C

Module 1 = 1PPS Input – Five Buffered Outputs
Module 2 = 1PPS Input – Five Buffered Outputs
Module 3 = 5 MHz Input – Five 10 MHz Outputs

CSDA-1D

Module 1 = 1PPS Input – Five Buffered Outputs
Module 2 = 5 MHz Input – Five 10 MHz Outputs
Module 3 = 5 MHz Input – Five 10 MHz Outputs

CSDA-1E

Module 1 = 1PPS Input – Five Buffered Outputs
Module 2 = 10 MHz Input – Five 5 MHz Outputs
Module 3 = Five 10 MHz Buffered Outputs from Module 2
Connectors on front panel

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Buying Options

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Custom Configuration

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