Avalanche photodiode (APD) module LLAM-1550-R08BH

Product Overview
The LLAM-1550-R08BH is a high-speed, low-light analog avalanche photodiode (APD) receiver module with a 1550 nm InGaAs APD and an integrated thermoelectric cooler for reduced noise and stable responsivity.

Series Description
The LLAM Series combines an avalanche photodiode chip, thermoelectric (TE) cooler and preamplifier in a hermetically sealed modified 12-lead TO-66 flange package. The module is RoHS compliant, designed for straightforward installation and provides enhanced heat sinking. The TE cooler maintains consistent responsivity across a 5°C to 40°C ambient range, optimizing performance for high-speed, low-light analog detection.

Included Components
Includes the Excelitas C30645EH APD.

Applications

• Laser range finding
• Target recognition
• Distributed temperature sensing (DTS)
• Confocal microscopy
• Analytical instrumentation
• High-speed free-space optical communication

Table (specified noise values)
250 — 375 fW/√Hz at 1300 nm
220 — 330 fW/√Hz at 1550 nm

Technical specifications

• Part number: LLAM-1550-R08BH
• Series: LLAM
• Detector type: InGaAs avalanche photodiode (APD), 1550 nm
• Included APD model: Excelitas C30645EH
• Active area: 80 µm
• Package: modified 12-lead TO-66 flange (hermetically sealed)
• Bandwidth: 200 MHz
• Thermoelectric (TE) cooler: included (stabilizes responsivity over 5°C to 40°C ambient)
• Preamplifier: integrated
• RoHS compliant
• Typical noise figures: 375 fW/√Hz at 1300 nm (associated with 250), 330 fW/√Hz at 1550 nm (associated with 220)
• Designed for detection of high-speed, low-light analog signals