Overview
The ADN2526ACPZ-R2 is a laser diode driver designed by Analog Devices Inc. This component is specifically engineered for direct modulation of packaged laser diodes with a differential resistance ranging from 5 Ω to 50 Ω. It is an SFP+ MSA-compliant device, making it ideal for use in compact optical modules. The ADN2526 features a small 3 mm × 3 mm LFCSP package and enhanced ESD protection, which are crucial for maintaining reliability in dense optical transceiver designs. The device operates within a temperature range of −40°C to +85°C, ensuring robust performance across various environmental conditions.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Conditions/Comments |
|---|---|---|---|---|---|
| Data Rate | 11.3 | Gbps | |||
| Supply Voltage | 3.0 | 3.3 | 3.6 | V | |
| Operating Temperature | −40 | +85 | °C | ||
| Package Type | 16-Lead LFCSP (3mm x 3mm w/ EP) | ||||
| Thermal Resistance (θJ-PAD) | 2.6 | 5.8 | 10.7 | °C/W | Thermal resistance from junction to bottom of exposed pad |
| Thermal Resistance (θJ-TOP) | 65 | 72.2 | 79.4 | °C/W | Thermal resistance from junction to top of package |
| IC Junction Temperature | 125 | °C |
Key Features
- Active Back-Termination: The ADN2526 features active back-termination that absorbs signal reflections from the TOSA end of the output transmission lines, ensuring excellent optical eye quality even with significant mistermination.
- Programmable Currents: The modulation and bias currents are programmable via the MSET and BSET control pins, allowing for flexible control schemes such as closed-loop or look-up table control.
- Automatic Laser Shutdown (ALS): The ALS feature enables the user to turn on/off the bias and modulation currents using a LVTTL logic source.
- Compact Package: The device is packaged in a 3 mm × 3 mm LFCSP, which is ideal for compact optical modules.
- Enhanced ESD Protection: The ADN2526 offers enhanced ESD protection, ensuring reliability in dense optical transceiver designs.
- Differential Input Stage: The input stage is designed to convert differential data signals to a level that ensures proper operation of the high-speed switch, with internal 100 Ω differential termination resistors to minimize signal reflections.
Applications
- SONET OC-192 and SDH STM-64 Optical Transceivers: The ADN2526 is suitable for high-speed optical communication systems.
- 10 Gb Fibre Channel Transceivers: It is used in Fibre Channel applications requiring high data rates.
- 10 Gb Ethernet Optical Transceivers: The device supports high-speed Ethernet optical communication.
- SFP+/XFP/X2/XENPAK/XPAK/MSA 300 Optical Modules: The ADN2526 is compliant with various optical module standards, making it versatile for different optical transceiver modules.
Q & A
- What is the data rate supported by the ADN2526?
The ADN2526 supports a data rate of up to 11.3 Gbps.
- What is the operating temperature range of the ADN2526?
The operating temperature range is from −40°C to +85°C.
- What type of package does the ADN2526 come in?
The ADN2526 is packaged in a 16-Lead LFCSP (3mm x 3mm w/ EP).
- What is the purpose of the active back-termination in the ADN2526?
The active back-termination absorbs signal reflections from the TOSA end of the output transmission lines, ensuring excellent optical eye quality.
- How are the modulation and bias currents controlled in the ADN2526?
The modulation and bias currents are programmable via the MSET and BSET control pins.
- What is the Automatic Laser Shutdown (ALS) feature in the ADN2526?
The ALS feature allows the user to turn on/off the bias and modulation currents using a LVTTL logic source.
- Why is the ADN2526 suitable for compact optical modules?
The ADN2526 is suitable due to its small package size and enhanced ESD protection.
- What are some of the key applications of the ADN2526?
The ADN2526 is used in SONET OC-192 and SDH STM-64 optical transceivers, 10 Gb Fibre Channel transceivers, 10 Gb Ethernet optical transceivers, and various optical module standards like SFP+/XFP/X2/XENPAK/XPAK/MSA 300.
- What is the significance of the internal 100 Ω differential termination resistors in the ADN2526?
The internal 100 Ω differential termination resistors minimize signal reflections at the input, ensuring better signal integrity.
- Is the ADN2526 compliant with any industry standards?
Yes, the ADN2526 is SFP+ MSA-compliant.
