Datasheet

HLVA-100
Logarithmic Voltage Amplifier

Features
Wide Dynamic Range typ. 60 dB, max. 80 dB,
5 ns Rise/Fall Time @ 40 dB step
Accuracy ± 1 dB @ pulse width of min. 20 ns
Switchable Input Range ± 20 µV ... ± 200 mV or ± 200 µV ... ± 2 V
DC coupled input
Local and Remote Control
Integrated Sample & Hold Baseline Correction






LIDAR systems
Signal Compression, Pulse Measurements
Time-Resolved Pulse and Transient Measurements
Mass Spectroscopy
Particle Detection

Block Diagram
Buffer-AmplifierInput RangeSelection
INPUT

OUTPUT

Sample & Hold

Output Offset
Trimpot

Input Offset
Trimpot
OFFSET
CONTR. INPUTBASELINE
CORR. OUTPUTPOWER
SUPPLYSupplyVoltage
Regulator
IN (+/-15V)

ManualSwitch

Optocoupler
Isolate Unit

DIG. CONTROL
INPUTOptocoupler
Isolate Unit

OUT (+/-12V, +5V)

DIG. CONTROLINPUTPOWER SUPPLYOUTPUT
BS01-0550-12

SOPHISTICATED TOOLS FOR SIGNAL RECOVERYHLVA-100/DS/R1/15APR04/Page 1 of 4

Datasheet

HLVA-100
Logarithmic Wideband Voltage Amplifier
Test Conditions

Vs = ± 15 V, Ta = 25°C, System Impedance = 50 Ω

Dynamic Range
Input Voltage Range
ScalingLinearity

typ. 60 dB (for accurate amplitude measurements)
max. 80 dB (signal detection)± 20 µV ... ± 200 mV / ± 200 µV ... ± 2 V switchable
12.5 mV/dB equals 250 mV/ decade (@ 50 Ω Load)± 1 dB (for pulse of min. 20 ns pulse width)

Pulse Response

Rise/Fall time

5 ns @ 40 dB step

Input

Input Impedance
Input Voltage Drift
Equivalent Input Voltage Noise
Input BIAS Current
Input Offset Voltage

50 Ω
0.6 µV/K
2 nV/√Hz< 4 µA
± 2.5 mV, adjustable by Offset-Trimpot andexternal Control Voltage

OutputOutput Impedance
Output Voltage Range

50 Ω+50 ... +1075 mV typ.
(@ 50 Ω Load)(if Output is adjusted to 1V at 100mV Input)± 500 mV, adjustable by Offset-Trimmer

Specifications
Dynamic Performance

Output Offset Voltage Range
Digital Control

Control Input Voltage Range
Control Input Current

Low: - 0.8 ...+ 0.8 V
High: + 3 ... + 12 V, TTL / CMOS compatible
Low: 0 mA
High: + 1.5 mA @ + 5 V (Input Range Control)+ 7 mA @ + 5 V (Baseline Correction Control)

Baseline Correction

Acquisition Time
Baseline Hold Droop Rate
Loop cut-off frequency

30 µs
1 µV/s
1.5 kHz(min. sample pulse width)(typ. @ 25°C)

Ext. Offset Control

Control Voltage Range
Offset Control Input Impedance± 10 V
100 kΩ(for ± 2.5 mV Offset Control)

Power Supply

Supply Voltage
Supply Current
Stabilized Power Supply Output± 15 V+ 90 / -120 mA typ.
± 12 V / max. 100 mA, + 5 V / max. 50 mA

CaseWeightMaterial

320 gr. (0.74 lbs)
AlMg4.5Mn, nickel-plated

Temperature Range

Storage Temperature
Operating Temperature- 40 ... + 100 °C
0 ... + 60 °C

Absolute Maximum Ratings

Power Supply Voltage
Signal Input Voltage± 20 V± 3 V @ ± 2 V Input Range Setting- 3 V / + 300 mV @ ± 200 mV Input Range Setting+ 16 V / - 5 V

Digital Control Input Voltage

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Datasheet

HLVA-100
Logarithmic Wideband Voltage Amplifier

Connectors

Remote Control Operation

Input

BNCOutput

BNC

Power Supply

LEMO Series 1S, 3-pin fixed Socket
Pin 1:+ 15V
Pin 2:- 15V
Pin 3:
GND

Control Port

Sub-D 25-pin, female, Qual. Class 2
Pin 1:+12V (Stabilized Power Supply Output)
Pin 2:-12V (Stabilized Power Supply Output)
Pin 3:
AGND (Analog Ground)Pin 4:+5V (Stabilized Power Supply Output)
Pin 5 - 6:
NC
Pin 7:
Baseline Correction Output
Pin 8:
Offset Control Voltage Input
Pin 9:
DGND (Ground f. Digital Control Pin 10 - 25)
Pin 10:Digital Control Input: Input Voltage Range
Pin 11:
Digital Control Input: Baseline Correction
Pin 12 - 25: NC

Input Range Setting

Remote control input is opto-isolated and connectedby logical OR to local switch setting. For remote control
the switch setting, set the local switch to “ ± 2 V " andselect the wanted setting via a bit-code at the digital input.
Input Range Pin 10
±2VLow± 200 mV
HighBaseline Correction

The integrated auto-null function can be performed byremote digital control only.
The input is opto-isolated by a ultra-fast opto-coupler.
Please note the min. pulse width.
Function
Pin 11
Hold previous value
Low
Null Output
HighSOPHISTICATED TOOLS FOR SIGNAL RECOVERYPage 3Datasheet

HLVA-100
Logarithmic Wideband Voltage Amplifier

Typical Performance
Characteristics

Logarithmic Response (@ ± 2 V Input Range Setting)Dimensions

157 mm
150 mm

OUT

15 mm

17 mm

44 mm

IN51 mm

15 mm

137 mm

POWER∅ 3.3 mm

36 mm
59 mm

27 mm

14 mm

19 mm

105 mm

DZ01-0550-12

FEMTO Messtechnik GmbHPaul-Lincke-Ufer 34D-10999 Berlin  Germany
Tel.: +49 (0)30 – 4 46 93 86
Fax: +49 (0)30 – 4 46 93 88
e-mail: info@femto.de
http://www.femto.deSpecifications are subject to change without notice. Information furnished herin is believed tobe accurate and reliable. However, no responsibility is assumed by FEMTO MesstechnikGmbH for its use, nor for any infringement of patents or other rights granted by implicationor otherwise under any patent rights of FEMTO Messtechnik GmbH. Product names
mentioned may also be trademarks used here for identification purposes only.
 by FEMTO Messtechnik GmbH
Printed in Germany

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