KETEK
KETEK VIAMP Preamplifier with VITUS Silicon Drift Detector
VIAMP with VITUS Silicon Drift Detector and preamplifier

VIAMP

OEM solution combines VITUS SDD
with preamplifier in optional housing


The VIAMP preamplifier module is a specially designed OEM printed circuit board for operation with VITUS Silicon Drift Detectors (SDD) matching all types from 7mm² (H7) to 50mm² (H50) active area.

It offers a very low-noise, charge sensitive, ramped reset type electronic of positive polarity with onboard settings and filtering for all necessary SDD bias voltages.

An optional standard housing is functioning as heat sink. A customised version is available on request.

VIAMP VITUS SDD with pre-amplifier in Al housing
  Premium Class Standard Class Cube Class
Type

Active Area

(mm²)

Window

Guaranteed
FWHM

@ 5.9 keV

Guaranteed
P/B

Guaranteed
FWHM

@ 5.9 keV

Guaranteed P/B

Guaranteed
FWHM at 1µs PT

@ 5.9 keV

Guaranteed P/B
H7 7 8µm Be ≤ 129 > 15,000 ≤ 139 > 6,000 ≤ 129 > 15,000
H7LE 7 AP3.3
low-energy
≤ 133 > 10,000 ≤ 139 > 6,000 ≤ 133 > 10,000
H18LE 15 AP3.3
low-energy
≤ 136 > 10,000 ≤ 144 > 6,000 ≤ 136 > 10,000
H20 20 8µm Be ≤ 129 > 15,000 ≤ 139 > 6,000 ≤ 129 > 15,000
H30 30 8µm Be ≤ 129 > 15,000 ≤ 139 > 6,000 ≤ 129 > 15,000
H50 50 12.5µm Be ≤ 129 > 15,000 ≤ 139 > 6,000 ≤ 129 > 15,000

Preamplifier for KETEK VITUS Silicon Drift Detectors

Standard VIAMP housing (Al) also functioning as heat sink
Standard VIAMP housing (Al) also functioning as heat sink
  • Low Noise Preamplifier
  • Charge Sensitive
  • Reset Type
  • Ramped Output
  • Positive Polarity
  • Low Power Consumption
  • Flex Lead Connection
  • 50Ω Signal Output Termination
  • Developed for KETEK VITUS SDD
  • from 7mm² (H7) to 50mm² (H50)
  • Customized Housing functioning as Heat Sink available

Preamplifier Output Signal

Typical VIAMP Preamplifier Output Signal for VITUS SDD at -35°C
Figure 1: Typical VIAMP Preamplifier Output Signal for VITUS SDD at -35°C
Typical VIAMP Preamplifier Output Signal for VITUS SDD at -35°C with Fe-55 Source
Figure 2: Typical VIAMP Preamplifier Output Signal for VITUS SDD at -35°C with Fe-55 Source

Operation Requirements

Parameter
Typical
Maximum Ratings

Positive Supply

+5V / 25mA DC

+4.9V to +5.4V
30mVpp Ripple

Negative Supply

-5V / 15mA DC

-4.9V to -5.4V
30mVpp Ripple

HV Bias Supply 

-140V / 1mA DC

<0.1%
30mVpp Ripple

Signal Polarization

positive

Ramp Threshold
(positive) 

+1.8V

+1.6V to +2.0V

Ramp Threshold
(negative)

-1.8V

-1.0V to -2.5V

Preamp Gain

3mV/keV <10%
others on request

<10%

Tec Supply

1.7V / 280mA
@ -35°C

3.6V / 700mA
30mVpp Ripple

TEC ∆T

70k

@ 20°C
Heat Sink Temp.

Temp. Diode Slope

2.35mV/K

@ 1µA Current

 Appropriate Heat Sink for SDD required – customized Al-Housing available on request.

Module Pin Assignment 

Pin #

Description

Pin 1

TEC Return (GND)

Pin 2

TEC Supply

Pin 3

+5V DC

Pin 4

-5V DC

Pin 5

Signal Return (GND)

Pin 6

Signal Out

Pin 7

Temperature Diode

Pin 8

GND

Pin 9

n.c.

Pin 10

Bias Voltage (HV)

Module Geometry

PCB Dimensions

54.7x17.7x6mm³

Flex Length

46.5mm

Connector Type

FCC ZIF 10-pin

Matching Connector

MOLEX 52271-1079

Operating Temp. Range

0 to 50°C

Conformal Coating

yes

RoHS Compliant

yes

Housing

On Request

VIAMP Bottom View
VIAMP Bottom View
VIAMP Top View
VIAMP Top View

Operation Block Diagram

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