The CVI Melles Griot 13AMP003 is a large dynamic range transimpedance amplifier that converts photodiode and detector photocurrent into measurable voltage outputs. It maintains zero bias across the detector input, preserving signal integrity across nine selectable gain settings spanning 1 GΩ to 10 Ω. The instrument reads input currents from 1 pA to 100 mA with ±1% accuracy and displays results directly on a 3½-digit backlit LCD alongside range and battery status indicators.
## Technical Specifications
• **Input Current Range:** 1 pA to 100 mA
• **Gain Settings:** Nine positions, 1 GΩ to 10 Ω
• **Measurement Accuracy:** ±1% across all ranges
• **Signal Monitor Output:** BNC connector, -2 V to +2 V full scale
• **Display:** 3½-digit backlit LCD with photocurrent readout, range indication, and battery status
• **Operating Temperature:** 10°C to 35°C
• **Storage Temperature:** -40°C to 55°C
• **Dimensions:** 133 × 83 × 140 mm (5.25 × 3.25 × 5.5 in.)
## Key Features
• Front-panel offset adjustment for nulling background readings
• Dual power operation: rechargeable AA nickel-cadmium battery pack (minimum 8 hours portable operation) or external wall-mounted supply with simultaneous charging
• Switch-selectable 115 VAC / 230 VAC power supply input
• BNC input and output connectors
• Rear-panel banana jack earth ground connection
• Compact bench-top form factor
## Typical Applications
• Photodiode signal conditioning and measurement
• Precision current detection in optical instrumentation
• Low-level photocurrent monitoring across wide dynamic ranges
## Compatibility & Integration
The 13AMP003 integrates with Melles Griot silicon photodiode products and broader optical detection systems requiring transimpedance signal processing.
