Overview
The ADL5317ACPZ-REEL7, produced by Analog Devices Inc., is a high voltage, wide dynamic range, biasing and current monitoring device. It is specifically optimized for use with avalanche photodiodes in optical systems. This device provides precise control over the bias voltage and accurate monitoring of the current sourced from the photodiode, making it essential for applications requiring high voltage bias control and optical power monitoring.
Key Specifications
| Parameter | Rating/Value |
|---|---|
| Supply Voltage (VPHV) | 10 V to 80 V |
| Input Current at VAPD | Up to 25 mA |
| Internal Power Dissipation | 615 mW |
| Maximum Junction Temperature | 125°C |
| Operating Temperature Range | −40°C to +85°C |
| Storage Temperature Range | −65°C to +150°C |
| Quiescent Current | 0.7 mA to 4.5 mA (dependent on conditions) |
| VAPD Bias Voltage Range | 6 V to 75 V |
| IPDM Monitor Output Current Range | 5 nA to 5 mA (attenuated by a factor of 5) |
| Package Type | 16-lead LFCSP (Lead Frame Chip Scale Package) |
Key Features
- Precision biasing and current monitoring for avalanche photodiodes.
- High voltage supply range from 10 V to 80 V.
- VAPD bias voltage adjustable from 6 V to 75 V using the VSET pin.
- Current monitoring with an attenuation factor of 5.
- Protection against excessive input current and overtemperature (shutdown at 140°C, restart at 120°C).
- Logic low output at FALT pin for fault indication.
- Low leakage current at the VAPD pin.
- Compatible with translinear logarithmic amplifiers for optical power monitoring.
Applications
The ADL5317ACPZ-REEL7 is primarily used in optical systems that require high voltage bias control and precise optical power monitoring. These applications include:
- Optical communication systems.
- Laser systems.
- Photonic sensors.
- High-speed data transmission systems.
Q & A
- What is the primary function of the ADL5317ACPZ-REEL7?
The ADL5317ACPZ-REEL7 is designed for high voltage bias control and precision optical power monitoring in optical systems using avalanche photodiodes. - What is the range of the high voltage supply (VPHV) for the ADL5317?
The high voltage supply range is from 10 V to 80 V. - How is the VAPD bias voltage adjusted?
The VAPD bias voltage is adjusted using the 3 V-compatible VSET pin, allowing the bias voltage to be varied from 6 V to 75 V. - What is the attenuation factor for the current monitoring output (IPDM)?
The current monitoring output is attenuated by a factor of 5. - What protection mechanisms are built into the ADL5317?
The device includes protection against excessive input current and overtemperature, with a shutdown at 140°C and restart at 120°C, and a logic low output at the FALT pin for fault indication. - What is the operating temperature range of the ADL5317?
The operating temperature range is from −40°C to +85°C. - What type of package does the ADL5317 come in?
The ADL5317 comes in a 16-lead LFCSP (Lead Frame Chip Scale Package). - How does the ADL5317 handle overcurrent conditions?
The voltage at VAPD falls rapidly from its setpoint when the input current exceeds 18 mA nominally, and this condition triggers a logic low at the FALT pin. - Can the ADL5317 be used with other components for optical power monitoring?
Yes, it is optimized for use with Analog Devices' family of translinear logarithmic amplifiers for precise optical power monitoring. - What is the maximum junction temperature for the ADL5317?
The maximum junction temperature is 125°C.
