The Melles Griot 13AMP003 is a large dynamic range transimpedance amplifier that converts low-level current signals from photodetectors into proportional analog voltage outputs. Operating across nine selectable gain settings from 1 GΩ to 10 Ω, the unit processes input currents ranging from 1 pA to 100 mA, making it ideal for precision optical and photonics measurements requiring extended dynamic range.
Technical Specifications
• Configuration: Transimpedance amplifier with constant zero bias
• Gain Settings: Nine selectable ranges spanning 1 GΩ to 10 Ω
• Input Current Range: 1 pA to 100 mA
• Output: Analog voltage proportional to input current; monitor output ±2 V at full scale
• Input/Output Impedance: 50 Ω
• Display: 3½-digit backlit LCD with photocurrent reading, range indication, and battery status
• Update Rate: Approximately 3 Hz refresh rate for DC and averaged AC components
• Offset Adjustment: Included for background nulling
• Power Source: Internal rechargeable nickel-cadmium AA batteries (minimum 8 hours operation) plus external power input option
• Connectors: BNC for signal input and monitor output; rear-panel banana jack for earth ground
– Key Features
• Nine discrete gain settings optimize signal conditioning across a 10 pA to 100 mA dynamic range
• Signal monitor output via BNC enables real-time AC/DC waveform observation on oscilloscopes
• Offset adjustment nulls background photocurrent for accurate low-level signal measurement
• Portable operation via internal rechargeable battery with extended runtime
• LCD readout displays actual input current values with continuous monitoring capability
– Typical Applications
• Photodiode signal conditioning and measurement
• Low-level optical detection in laboratory and field environments
• Photonics system integration requiring extended dynamic range
• AC and DC signal analysis of current-mode detector outputs
– Compatibility & Integration
The 13AMP003 interfaces with photodiodes and current-generating detectors via BNC connectors, supporting integration into diverse optical detection architectures. Standard 50 Ω impedance and ground connectivity accommodate laboratory instrumentation.
