KETEK
VICO-PA
VICO-PA preamplifier

VICO-PA

Preamplifier
for Applications with VITUS Silicon Drift Detectors

VICO-PA is a specially designed OEM printed circuit board optimised for operation with VITUS Silicon Drift Detectors matching all types from 7mm² to 92mm² active area. This preamplifier module offers an ultra-low-noise, charge-sensitive, ramped reset type electronic of positive polarity with high gain for optimum peak-to-noise ratio.

Short Facts

  • Ultra-low-noise preamplifier
  • Ultra-low peak-shift
  • Charge sensitive
  • Reset type
  • Ramped output
  • Low power consumption
  • Optimised for VITUS SDDs from 7mm² (H7) up to 92mm² (R100) active area

Spectrum

Spectrum

Typical Fe-55 spectrum acquired with VICO-PA preamplifier and VITUS SDD

Preamplifier Output Signal

Typical VICO-PA output signal for VITUS SDD at -35°C without irradiation showing a reset period of approximately 140ms with a reset duration of below 5µs. The amplitude of the ramped output signal is well between ±2V.

Typical VICO-PA output signal for VITUS SDD at -35°C with Fe-55 source

Typical VICO-PA output signal for VITUS SDD at -35°C with Fe-55 source, giving Mn-Ka and Kb pulses with energies of 5.895 and 6.492 keV.

Zoom: single photon step-like pulses with an approximate gain of 4.5mV/keV.

Operation Parameters

Parameter
Typical
Maximum Ratings

Positive Supply

+5V / 25mA DC

+5V ±5%
30mVpp ripple

Negative Supply

-5V / 15mA DC

-5V ±5%
30mVpp ripple

Signal Polarization

positive

Ramp Threshold
(positive) 

+3.8V

+0.5V to +4.0V

Ramp Threshold
(negative)

-3.8V

-0.5V to -4.0V

Preamp Gain

4mV/keV ±15%
others on request

2 to 20mV/keV

Appropriate heat sink for SDD required

Module Pin Assignment

Pin # 

Description

Pin 1

INHIBIT (marking)

Pin 2

RESET

Pin 3

+5VDC in

Pin 4

do not use

Pin 5

SIGNAL OUT

Pin 6

do not use

Pin 7

C_DRAIN

Pin 8

DRAIN

Pin 9

GND

Pin 10

GND

Pin 11

FEEDBACK

Pin 12

do not use

Pin 13

-5VDC in

Pin 14

do not use

Pin 15

do not use

Pin 16

n.a.

Module Geometry

Pin #

Description

PCB Dimensions

23x16.5x10.5mm³

2 row pin header

Connector Type

2.54mm THT

Matching Connector

Fischer SIL 1G

Operating Temp. Range

-10 to +60°C

Storage Temp. Range

-25 to +85°C

Housing

yes

RoHS Compliant

yes

EMI

approved

 

 

Mechanical Dimensions

VICO-PA Operation Block Diagram

Applications

  

  • EDX / EDS
  • XRF / µ-XRF
  • TXRF
  • XRD
  • Portable & Handheld Instrumentation

Operation Block Diagram

VICO-PA Operation Block Diagram
VICO-PA Operation Block Diagram

Related VICO Products 

  • VICO-TC: Peltier (TEC) Controller
  • VICO-HV: High Voltage Power Supply

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