VIAMP 2017-05-16T13:24:58+00:00

VIAMP

OEM solution with VITUS CUBE SDD and low-noise preamplifier

KETEK VIAMP

The VIAMP-KC preamplifier module is a specially designed OEM printed circuit board for operation with KETEK’s VITUS CUBE Silicon Drift Detectors (SDD), matching all types from 7 mm² (H7) up to 50 mm² (H50) collimated area.

The assembly comprises an ultra-low-noise, ramped reset type electronic preamplifier of positive polarity with onboard settings and filtering for all necessary SDD bias voltages.

The Al housing is functioning as an appropriate heat sink. Beside KETEK’s standard housing, customized versions are available on request as well.

  • VITUS-CUBE SDDs from 7 mm² (H7) to 50 mm² (H50)

  • Ultra-low-noise preamplifier

  • Ramped reset type output signal

  • Customized gain and ramp threshold available on request

  • Serial interface accessible:
    EEPROM and Peltier hot side temperature

  • RoHS and UL compliant

  • Customized housing available on request

Energy Resolution

Figure 1: Energy Resolution for different peaking times and chip temperatures acquired with XIA Mercury. Even at -10 °C chip temperature the VIAMP can still provide an excellent energy resolution at short peaking times.

VIAMP-KC Energy Resolution

Pin Assignment

Pin 1 TEC Return
Pin 2 TEC Supply
Pin 3 Positive Supply
Pin 4 Negative Supply
Pin 5 GND (Signal Return)
Pin 6 Signal Out
Pin 7 Temperature Sensor
Pin 8 GND
Pin 9 n.c.
Pin 10 HV Supply

Geometry

FFC CABLE LENGTH Up to 200 mm
Connector Type FFC ZIF 10-pin
Matching Connector TE Connectivity 1-84953-0
Operating Temp. Range 0 to 50°C
RoHS Compliant yes
Customized Housing On request

Analog Output Signal

Figure 2: Typical VIAMP-KC output signal at -35 °C chip temperature (10 kcps)

VIAMP-KC Analog Output Signal

VIAMP-KC Operation Block Diagram

Operation Block Diagram

Figure 3: Operation Block Diagram of the VIAMP-KC.

Operation Requirements*

* Valid for standard configuration
** Other gain configurations on request
*** In case of Beryllium encapsulation only
PARAMETER TYPICAL MAXIMUM RATINGS
Positive Supply +5 V / 18 mA DC +4.9 V to +5.4V / ≤ 35 mA
30 mVpp Ripple
Negative Supply -5 V / 9 mA DC -5.4 V to -4.9 V / ≤ 25 mA
30 mVpp Ripple
HV Supply -168 V / ≈85 µA DC -171 V to -165 V / ≤ 100 µA
30 mVpp Ripple
Ramp Threshold (positive) +1.5 V +1.35 V to +1.65 V
Ramp Threshold (negative) -1.5 V -1.65 V to -1.35 V
Preamp Gain 5 mV/keV** ±20 %
TEC Supply*** 1.7 V / 280 mA @ -35°C 700 mA, 30 mVpp Ripple
TEC ∆T 70 K @ 20 °C heat sink temperature
Temp. Sensor 10 kΩ Thermistor @ +25 °C ≤1 µA Current

Available Options

* with low-energy window
CUBE Class
VITUS SDD Guaranteed FWHM [Mn Kα] @ 1 µs PT FFC cable length [mm]
H7 ≤ 133 eV 30, 50 (standard), 100, 150, 200
H20 ≤ 133 eV 30, 50 (standard), 100, 150, 200
H30 ≤ 133 eV 30, 50 (standard), 100, 150, 200
H50 ≤ 133 eV 30, 50 (standard), 100, 150, 200
H7LE* ≤ 133 eV 30, 50 (standard), 100, 150, 200
H18LE* ≤ 136 eV 30, 50 (standard), 100, 150, 200