Features

• Wide dynamic range up to 80 dB
• DC coupled input
• Switchable input range from ±20 µV to ±200 mV and from ±200 µV to ±2V
• Rise/fall time 5 ns
• Input noise 2 nV/√Hz
• Local and remote control
• Integrated sample and hold baseline correction

 

General Description

The FEMTO HLVA-100 offers a wide dynamic range of up to 80 dB. With a DC coupled input and a rise and fall time of just 5 ns the HLVA-100 is the ideal tool for the measurement of fast and high dynamic pulses. The input voltage noise is extremely low with just 2 nV/√Hz. The logarithmic gain curve offers high gain for small input signals and relatively low gain for high input signals. Therefore the HLVA-100 is the ideal amplifier for signals with high dynamic range and applications in which a signal compression is desired.

 

Input Offset

The HLVA-100 provides 3 possibilities of an input offset voltage correction (baseline correction). All three methods cancel both temperature drift dependent offset and small source voltage offset:

• Manual null adjust by trimpot
• Remote null adjust by ±10 V control voltage
• Baseline correction loop to perform remote auto-null

 

Applications

• LIDAR systems
• Signal compression
• Time-resolved pulse and transient measurements
• Mass spectroscopy
• Particle detection

 

Model	HLVA-100
Input Voltage Range	from ±20 µV to ±200 mV and from ±200 µV to ±2 V
Dynamic Range	Typ. 60 dB (for accurate amplitude measurement) Max. 80 dB (for signal detection)
Scaling	12.5 mV/dB, 250 mV/decade (@ 50 Ω load)
Linearity	±1 dB (for pulse of min. 20 ns pulse width)
Input Noise Voltage	2 nV/√Hz
Input Voltage Drift	0.6 µV/°C
Input/Output	50 Ω, BNC
Rise/Fall Time	5 ns @ 40 dB step
Output Voltage Range	from +50 to +1075 mV typ. @ 50 Ω load (if output is adjusted to 1 V at 100 mV input)
Output Offset Voltage Range	±500 mV, adjustable by offset-trimpot
Baseline Correction	Acquisition time	30 µs (min. sample pulse width)
	Baseline hold droop rate	1 µV/s (typ. @ 25°C)
	Loop cut-off frequency	1.5 kHz
Power supply	±15 V, +100 mA/−150 mA,
Digital Control	TTL, CMOS, opto-isolated
Datasheet	535 kB

 

Offset adjustable by trimpot or external control voltage. Power supply via 3-pin Lemo^® socket. A mating connector is provided with the device. Optional power supply PS-15 available. For further information please view the datasheet.
 
Typical Performance Characteristics