Optical Sensors & Detector – Transducer for Photodiodes
Photodiode Amplifier Dual
Photodiode Amplifier Dual – Precision Two-Channel Transimpedance Amplifier for UV, Optical, and Scientific Sensor Applications
The Photodiode Amplifier Dual is a two-channel transimpedance amplifier module engineered for low-noise current-to-voltage conversion in UV, visible, and near-IR photodiode applications.
Developed by SGLUX, it enables simultaneous amplification of two photodiodes with independent gain and filtering control, making it ideal for UVA, UVB, UVC, or reference detector configurations.
Each channel features an ultra-low bias operational amplifier, precise resistor network, and temperature-stabilised circuitry to deliver high linearity and minimal drift.
Designed for scientific research, calibration benches, and process monitoring, this amplifier ensures traceable, stable, and reproducible optical signal conditioning.
It interfaces seamlessly with SGLUX photodiodes, SGCD4, VOLTCON, and Digiboard systems, forming a complete signal acquisition chain for industrial, environmental, and laboratory UV measurement setups.
Understanding Photodiode Amplifier Dual
The Photodiode Amplifier Dual converts minute photocurrents from UV or optical detectors into precise voltage outputs.
Each channel operates independently, allowing users to measure two wavelengths, compare reference and test signals, or monitor redundant sensors simultaneously.
With selectable transimpedance gains and built-in filtering, it supports measurements across a wide optical intensity range.
The amplifier’s low-noise design and temperature-compensated electronics ensure accurate performance even in thermally dynamic environments.
When combined with SGLUX detectors and VOLTCON controllers, it provides a fully traceable and calibrated UV sensing platform for demanding scientific and industrial applications.
Technical Specifications
| Feature | Specification |
|---|---|
| Function | Dual-channel transimpedance amplifier for UV/optical photodiodes |
| Number of Channels | 2 independent inputs |
| Supported Sensors | SiC, GaP, Si photodiodes |
| Transimpedance Gain | Selectable 10⁵ – 10¹⁰ V/A |
| Output Voltage | 0 – 10 V DC (linear per channel) |
| Linearity | ±0.2 % of full scale |
| Input Bias Current | < 1 pA |
| Noise Density | < 2 µV/√Hz |
| Bandwidth | Up to 100 kHz (gain dependent) |
| Gain Control | Jumper selectable or remote via RS-485 |
| Output Impedance | < 100 Ω |
| Power Supply | ±12 V DC / 5 V USB |
| Protection | ESD, overvoltage, reverse polarity |
| Operating Temperature | 0 … +60 °C |
| Housing | EMI-shielded aluminium enclosure |
| Dimensions | 90 × 70 × 30 mm |
| Weight | Approx. 220 g |
| Compatibility | SGLUX SiC/GaP/Si photodiodes, SGCD4, VOLTCON, Digiboard |
Key Features and Advantages
Dual-Channel Precision Amplification
Allows simultaneous amplification of two detectors, ideal for reference-measurement comparison, dual-band monitoring, or redundant UV safety systems.
Ultra-Low Noise Design
Employs precision op-amps and shielded signal paths to maintain high sensitivity, even at picoamp current levels.
Selectable Gain and Filtering
User-adjustable transimpedance gains from 10⁵ – 10¹⁰ V/A accommodate a wide dynamic range of optical signals.
Temperature-Compensated Stability
Built-in thermal compensation circuitry ensures drift-free operation for long-term accuracy.
Plug-and-Play Integration
Connects directly to SGLUX photodiodes and interfaces seamlessly with SGCD4 signal conditioners and VOLTCON power controllers.
Robust and Shielded Construction
Aluminium EMI-shielded housing minimises interference, making it reliable for laboratory and industrial environments.
Traceable Calibration
When paired with SGLUX calibrated detectors, all measurements remain traceable to NIST/PTB standards.
Compact, Modular Architecture
Ideal for system integrators, allowing multiple amplifier units to be cascaded for multi-channel UV monitoring.
By offering dual-channel precision, low-noise amplification, and calibration traceability, the Photodiode Amplifier Dual is an essential component for modern UV measurement systems.
Applications Across Industries
UV Measurement and Calibration Systems
Amplifies detector outputs for UVA, UVB, UVC radiometers and calibration benches.
Disinfection and Sterilisation Control
Measures real-time lamp intensity across multiple sensors to validate sterilisation efficiency.
Industrial UV Curing Lines
Monitors dual lamps or zones to maintain consistent curing performance in printing and coating lines.
Environmental and Solar Research
Used in dual-band UV sensing (UVA + UVB) for climate and atmospheric monitoring.
Medical and Phototherapy Equipment
Provides precise current-to-voltage conversion for photometric sensors in therapeutic or diagnostic systems.
Optical Research and Testing
Facilitates high-accuracy measurements of optical power, reflection, and transmission across two independent sensors.
By combining dual-channel capability, low noise, and traceable calibration, the Photodiode Amplifier Dual supports industrial automation, scientific research, and environmental measurement with unmatched reliability.
Why Choose United Spectrum Instruments?
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Official distributor of SGLUX Photodiode Amplifiers in India
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Expertise in integrating UV sensors, amplifiers, and control electronics
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Local calibration traceable to NIST/PTB standards
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Competitive pricing for OEMs, R&D institutions, and production facilities
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Nationwide technical service and after-sales support
FAQs
What makes the Dual Amplifier unique?
It provides two independent low-noise channels for simultaneous UV or optical signal measurement.
Which sensors can it connect to?
It supports all SGLUX SiC, GaP, and Si photodiodes.
Is the output digitally controlled?
Yes, gain and offset can be adjusted via hardware or RS-485 interface.
Can it be integrated into industrial systems?
Yes, it’s fully compatible with VOLTCON, SGCD4, and Digiboard platforms.
How does United Spectrum support Indian customers?
By offering calibration assistance, integration guidance, and nationwide technical support.
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FAQs
What makes the Dual Amplifier unique?
It provides two independent low-noise channels for simultaneous UV or optical signal measurement.
Which sensors can it connect to?
It supports all SGLUX SiC, GaP, and Si photodiodes.
Is the output digitally controlled?
Yes, gain and offset can be adjusted via hardware or RS-485 interface.
Can it be integrated into industrial systems?
Yes, it’s fully compatible with VOLTCON, SGCD4, and Digiboard platforms.
How does United Spectrum support Indian customers?
By offering calibration assistance, integration guidance, and nationwide technical support.
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