The Silicon APD Preamplifier Module integrates a high-performance silicon avalanche photodiode (APD) with a low-noise hybrid preamplifier, delivering exceptional sensitivity and ultra-fast response for advanced optical detection systems.
Designed for LIDAR, laser ranging, TOF measurement, and optical communication, the module provides excellent performance across the 400–1100 nm spectral range and supports high-speed pulse detection at 905 nm and 1064 nm.

This APD preamplifier module is ideally suited for long-range laser distance measurement, UAV LIDAR mapping, industrial automation, and scientific instrumentation requiring high gain and reliable signal amplification.

Key Features

• High Sensitivity & Low Noise Amplification
  Detects extremely weak laser signals over long distances.

• Ultra-Fast Rise & Fall Times
  Up to 2–10 ns, enabling high-speed TOF and pulse laser systems.

• Wide Spectral Response: 400–1100 nm
  Optimized for 905 nm and 1064 nm laser applications.

• Integrated APD + Hybrid Preamplifier
  Ensures stable gain, low power consumption, and high detection accuracy.

• High Dynamic Range & Low NEP
  Suitable for high-precision LIDAR and industrial laser scanners.

• Robust Metal Housing & Thermally Stable Design
  Ensures long-term stability in harsh environments.

Typical Applications

• LIDAR systems (UAV, AGV, autonomous navigation)

• Laser rangefinders & distance measurement modules

• Optical communication systems

• Time-of-Flight (TOF) measurement

• Non-contact industrial measurement

• Scientific optical instruments

• High-gain APD detection systems

Product Variants

We offer two models optimized for different performance requirements:

🟦 Module A — Standard High-Sensitivity APD Preamplifier

Key Specifications

• Spectral Response: 400–1100 nm

• Active Diameter: 0.8 mm

• Breakdown Voltage: 400–480 V

• Operating Voltage: 0.9 × VBR

• Responsivity: 150 kV/W @ 1064 nm

• Dynamic Range: 25 dB

• Bandwidth: 35 MHz

• Rise/Fall Time: 10 ns

• NEP: 0.20 pW/√Hz

• Output Impedance: 33 Ω

• Temperature Range: −45°C to +70°C

Positioning:
Ideal for laser ranging systems needing stable detection, moderate bandwidth, and excellent signal-to-noise ratio.

🟩 Module B — Ultra-Fast, High-Bandwidth APD Preamplifier

Key Specifications

• Spectral Response: 400–1100 nm

• Active Diameter: 0.8 mm

• Breakdown Voltage: 300–500 V

• Operating Voltage: 0.9 × VBR

• Responsivity: 200 kV/W @ 1064 nm

• Dynamic Range: 25 dB

• Bandwidth: 170 MHz

• Rise/Fall Time: 2 ns

• NEP: 0.15–0.20 pW/√Hz

• Output Impedance: 50 Ω

• Temperature Range: −55°C to +85°C

Positioning:
Built for applications requiring ultra-fast signal response, such as
UAV LIDAR mapping, high-speed TOF systems, and fast optical communication.

Electrical & Pin Configuration

Power Supply

• Operating Voltage: ±5 V

• APD Bias Voltage: 0.9 × VBR

Pin Functions

Absolute Maximum Ratings

• Operating Voltage: ±9 V (A), ±5.5 V (B)

• Maximum APD Bias: 0.95 × VBR

• Storage Temperature: −55°C to +100°C

• Operating Temperature:

  • Module A: −45°C to +70°C

  • Module B: −55°C to +85°C

Mechanical Dimensions

Metal housing with protective optical window.

Advantages for Industrial & LIDAR System Integrators

• Superior long-range detection performance

• Plug-and-play preamplifier design

• Excellent reliability across wide temperature ranges

• Consistent gain for precise TOF measurement

• Ideal replacement for traditional PIN + amplifier solutions

• Designed for mass production & OEM integration

(Incorporates: “OEM APD module”, “LIDAR APD detector”, “industrial APD sensor”)