APD2008 Avalanche Detector

APD2008 Avalanche Detector

User Manual

2.1 Appearance and Interface Description

The module appearance is shown in the figures below:

Figure 2-1 Detector Module Appearance (Left: FC Interface, Right: Free Space)

Among them, the upper interface is the optical input interface (FC/free space), the lower right is the power input interface (M8 or lead wire output), and the lower right is the signal output interface (SMA).

The output of the version with temperature compensation is a GH1.25 terminal block, and its definition is as follows:

Figure 2-2 Matching Power Cord

Electrical Description

The APD module is a single-power-supply product: connect the red wire to 12V, the black wire to ground, with a current of 300mA. The current of the detector module during normal operation is less than 100mA.

1. Output Interface: SMA (female connector);

2. Output Impedance: 50ohm;

3. Maximum Output Voltage:

    Products below 500MHz: ±3.6V (@High Z), ±1.8V (@50ohm);

    Products of 1GHz (inclusive) and above: ±1V (@50ohm).

4. Spectral Response Range: 400nm-1100nm;

5. Detector Responsivity: 50A/W@905nm;

6. Do not exceed the saturation optical power for the optical input amplitude.

Performance Parameters

Performance Test Description

1. Due to the different FC connector conditions of the test light source, the insertion loss of each detector is inconsistent, and the test results of detector response will vary slightly;

2. The transimpedance gain of the detector is calculated under the condition of high output load impedance. If the output load is 50Ω, the gain will be reduced to half of the nominal value;

3. The measurement results of detector noise and rise time are obtained under the following conditions:

    a: Oscilloscope input impedance is 50Ω;

    b: Oscilloscope bandwidth is full bandwidth (≥1GHz);

    c: Oscilloscope time scale is set to 100ns/div (Note: noise will vary greatly with different time scales);

4. Test room temperature: 23℃±5℃;

5. Test relative humidity: 35%±15%;

6. Test working voltage: ±12V;

Typical Test Parameters of APD Detector (APD2008)

Figure 3-1 Summary of Electrical Performance

Mechanical Dimensions

Figure 4-1 Mechanical Dimension Drawing of APD Detector Module