Photodiode Measurement
Recommended application for DDPCA-300.
View Application →
femto
DDPCA-300
Current / Transimpedance Amplifier
4 fA peak-to-peak noise
PRODUCT OVERVIEW
Product Information
Gain Performance
| Gain (V/A) | Bandwidth | Rise Time | Mode |
|---|---|---|---|
| 1e+4 | 400 Hz | 0 | standard |
| 1e+5 | 400 Hz | 0 | standard |
| 1e+6 | 400 Hz | 0 | standard |
| 1e+7 | 400 Hz | 0 | standard |
| 1e+8 | 150 Hz | 0 | standard |
| 1e+9 | 150 Hz | 0 | standard |
| 1e+10 | 20 Hz | 0 | standard |
| 1e+11 | 20 Hz | 0 | standard |
| 1e+12 | 1 Hz | 0 | standard |
| 1e+13 | 1 Hz | 0 | standard |
Specifications
| Bandwidth | , 0.7 Hz and 0.1 Hz) |
| Gain | Transimpedance 1 x 104 ... 1 x 1013 V/A (load ≥ 100 kΩ) |
| Input Noise | current gain setting dependent, see table below |
| Output Voltage | ±10 V (load ≥ 100 kΩ) |
Applications
- Photodiode Measurement
- Low Current Measurement
Strengths
- Selectable transimpedance gain
- Remote-control capability
Limitations
Detector and cable capacitance may affect noise and bandwidth.
Engineering Notes
- Check whether the output is specified for a 50 Ω load or a high-impedance load.
- Use the specified high-impedance load when evaluating output-voltage performance.
- Include detector and cable capacitance when evaluating stability and bandwidth.
- Use proper grounding and cable shielding for low-noise current measurements.
OFFICIAL DOCUMENTS
DDPCA-300 Technical Documents
Official technical documents provided by femto.
✓ Official manufacturer document verified
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TECHNICAL SPECIFICATIONS
Specifications
Gain Performance
| Gain (V/A) | Bandwidth | Rise Time | Mode |
|---|---|---|---|
| 1e+4 | 400 Hz | 0 | standard |
| 1e+5 | 400 Hz | 0 | standard |
| 1e+6 | 400 Hz | 0 | standard |
| 1e+7 | 400 Hz | 0 | standard |
| 1e+8 | 150 Hz | 0 | standard |
| 1e+9 | 150 Hz | 0 | standard |
| 1e+10 | 20 Hz | 0 | standard |
| 1e+11 | 20 Hz | 0 | standard |
| 1e+12 | 1 Hz | 0 | standard |
| 1e+13 | 1 Hz | 0 | standard |
APPLICATIONS
Typical Applications
Common measurement applications where this product can be effectively used.
Low Current Measurement
Recommended application for DDPCA-300.
View Application →Why Choose This Product?
Key reasons why this product is recommended for demanding measurement applications.
Extreme Sensitivity
Optimized for ultra-low current measurements down to the femtoampere range.
Ultra-Low Noise
Exceptional input noise performance for demanding laboratory measurements.
Best for Weak Signals
Ideal when the signal is too small for conventional current amplifiers.
Research Grade
Designed for precision scientific instrumentation and optical experiments.
Excellent Stability
Stable performance during long-duration precision measurements.
Photonics Optimized
Suitable for photodiodes, APDs and other ultra-sensitive optical detectors.
PRACTICAL ENGINEERING GUIDANCE
Engineering Notes
Practical setup guidance, measurement cautions and application notes for this product.
Engineering GuidancemediumOfficially Verified
1. Engineering Note 1
Check whether the output is specified for a 50 Ω load or a high-impedance load.
Source: engineering-model
Engineering GuidancemediumOfficially Verified
2. Engineering Note 2
Use the specified high-impedance load when evaluating output-voltage performance.
Source: engineering-model
Engineering GuidancemediumOfficially Verified
3. Engineering Note 3
Include detector and cable capacitance when evaluating stability and bandwidth.
Source: engineering-model
Engineering GuidancemediumOfficially Verified
4. Engineering Note 4
Use proper grounding and cable shielding for low-noise current measurements.
Source: engineering-model
TECHNICAL RESOURCES
Downloads
LABTECH KOREA
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