Optical Sensors & Detector – Transducer for Photodiodes
AMPCON
Precision AMPCON Transimpedance Amplifier for Low-Noise Current-to-Voltage Conversion in UV, Photodiode, and Optical Systems
The AMPCON is a high-stability transimpedance amplifier (TIA) engineered for accurate current-to-voltage conversion in UV, photodiode, and optical sensing applications.
It delivers ultra-low noise, high gain stability, and wide dynamic range, making it ideal for SiC, GaP, and Si photodiodes used in UV measurement, radiometry, and spectroscopy.
With precision-grade operational amplifiers, thermal drift compensation, and configurable gain settings, AMPCON ensures consistent linearity even under low-signal conditions.
The output voltage is directly compatible with data acquisition systems, oscilloscopes, and ADC modules.
Its compact, shielded housing and digital calibration capability make it a perfect companion for SGLUX photodiodes, UV radiometers, and reference instruments.
The AMPCON ensures signal integrity, reproducibility, and traceable measurement accuracy, meeting the demanding requirements of scientific laboratories, calibration centres, and industrial UV systems.
Understanding AMPCON
The AMPCON Transimpedance Amplifier converts the minute photocurrents generated by UV photodiodes into stable, measurable voltages for monitoring or analysis.
By employing low-bias, low-noise op-amps and carefully matched resistors, AMPCON maintains excellent signal-to-noise ratio and linearity across a wide current range.
Its temperature-compensated gain stage and shielded enclosure eliminate environmental interference, ensuring accurate UV measurement even at nanoamp levels.
Designed for use with SGLUX SiC detectors or custom photodiode assemblies, it simplifies the process of integrating UV sensors into research, industrial, and IoT systems requiring precise optical signal conditioning.
Technical Specifications
| Feature | Specification |
|---|---|
| Function | Photodiode Current-to-Voltage Conversion |
| Input Type | SiC / GaP / Si Photodiodes |
| Transimpedance Gain | Selectable 10⁵ – 10¹⁰ V/A |
| Output Voltage Range | 0 – 10 V DC |
| Bandwidth | Up to 100 kHz (gain dependent) |
| Input Bias Current | < 1 pA |
| Input Impedance | < 10 Ω |
| Output Impedance | < 100 Ω |
| Noise Density | < 2 µV/√Hz |
| Linearity | ±0.2 % |
| Power Supply | ±12 V or USB (5 V) |
| Communication Interface | Optional RS-485 / USB (for gain configuration) |
| Protection | ESD and reverse polarity protection |
| Operating Temperature | 0 … +60 °C |
| Enclosure | Shielded aluminium housing (EMI protected) |
| Dimensions | 90 × 70 × 30 mm |
| Weight | Approx. 200 g |
| Compatibility | SGLUX UV detectors, radiometers, IoT transmitters |
Key Features and Advantages
Low-Noise, High-Gain Performance
The AMPCON provides high transimpedance gain with exceptional noise suppression, ensuring accurate conversion of weak photocurrents into stable voltage signals.
Wide Dynamic Range
Covers a wide current range from picoamperes to microamperes, suitable for low-intensity UV and high-flux optical systems.
Temperature-Compensated Stability
Integrated drift-compensation circuitry maintains constant gain under varying environmental conditions, ensuring long-term reliability.
Selectable Gain Configuration
Gain settings from 10⁵ to 10¹⁰ V/A allow users to adapt sensitivity for different photodiodes or optical intensity levels.
Digital Output Interface (Optional)
An RS-485 or USB communication interface enables remote gain adjustment and signal monitoring for automation systems.
EMI-Shielded Construction
Precision-machined aluminium housing minimises electromagnetic interference, guaranteeing clean signal output in laboratory and industrial settings.
Plug-and-Play Integration
The output can directly interface with voltmeters, DAQ systems, or control electronics without additional signal conditioning.
Calibration Compatibility
Designed for SGLUX reference photodiodes and calibration setups, ensuring traceable system performance when combined with VOLTCON and UVRRM instruments.
By combining high precision, flexibility, and reliability, the AMPCON stands as the ideal amplifier for UV measurement chains, optical calibration benches, and photodiode-based sensors.
Applications Across Industries
UV Measurement and Calibration Systems
Amplifies photodiode output for UVA, UVB, and UVC radiometry, ensuring accurate irradiance data for laboratories and certification bodies.
Optical and Spectroscopic Analysis
Converts low-intensity optical signals from spectrometers and detectors into measurable voltages for data acquisition.
Industrial UV Curing and Monitoring
Used in UV curing lines to monitor lamp intensity in real time through feedback loops.
Environmental and Atmospheric Research
Detects solar UV radiation and converts small photocurrents into traceable electronic data for climatological studies.
Medical and Phototherapy Equipment
Supports photodiode sensors that monitor UV exposure in therapeutic or diagnostic systems.
IoT and Smart Sensor Integration
When paired with IoT UV nodes (UV Index Transmitters), it serves as the analog-to-digital conditioning stage for long-distance communication.
The AMPCON enables precise and stable optical current measurement, forming the foundation of high-accuracy UV sensing, data logging, and system calibration workflows across scientific, industrial, and medical domains.
Why Choose United Spectrum Instruments?
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Exclusive distributor of SGLUX AMPCON Amplifiers in India
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Expert system integration with VOLTCON power supplies and UV detectors
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Local calibration and validation support traceable to NIST/PTB
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Competitive pricing for laboratories, OEMs, and R&D facilities
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Nationwide service and technical assistance for custom UV measurement setups
FAQs
What is the purpose of AMPCON?
It converts photodiode current into a measurable voltage signal for UV and optical applications.
Which sensors are compatible?
All SGLUX SiC, GaP, and Si photodiodes, as well as third-party photodiodes.
Is calibration traceable?
Yes, AMPCON units are tested and verified for accuracy using NIST/PTB-traceable standards.
Can it be integrated with other systems?
Yes, AMPCON outputs are compatible with DAQ systems, oscilloscopes, and IoT transmitters.
How does United Spectrum support Indian customers?
By providing installation assistance, calibration verification, and nationwide after-sales technical service.
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FAQs
What is the purpose of AMPCON?
It converts photodiode current into a measurable voltage signal for UV and optical applications.
Which sensors are compatible?
All SGLUX SiC, GaP, and Si photodiodes, as well as third-party photodiodes.
Is calibration traceable?
Yes, AMPCON units are tested and verified for accuracy using NIST/PTB-traceable standards.
Can it be integrated with other systems?
Yes, AMPCON outputs are compatible with DAQ systems, oscilloscopes, and IoT transmitters.
How does United Spectrum support Indian customers?
By providing installation assistance, calibration verification, and nationwide after-sales technical service.
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