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

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.

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Operation Parameters

Parameter	Typical	Maximum Ratings
Positive Supply	+5V / 25mA DC	+5V ±5% 30mV_pp ripple
Negative Supply	-5V / 15mA DC	-5V ±5% 30mV_pp 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

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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.

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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