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
- Risk/fall time 5 ns
- Input noise 2 nV/√Hz
- Local and remote control
- Integrated sample and hold baseline correction
| 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 | |
| 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 Requirements | ±15 V, +100 mA/−150 mA | |
| Control Interface | 3 opto-isolated digital inputs, TTL/CMOS compatible | |
| Datasheet |  |
|
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.
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
Typical performance characteristics
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