Overview
The ADN2872ACPZ-RL is a high-performance laser diode driver IC designed by Analog Devices Inc. for advanced Small Form-Factor (SFF) and Small Form-Factor Pluggable (SFP) modules. This device is optimized for high-speed laser applications, supporting data rates from 50 Mbps to 3.3 Gbps. It features dual-loop control of the average power and extinction ratio (ER), which automatically compensates for variations in laser characteristics over temperature and aging, eliminating the need for extensive temperature calibration.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Conditions/Comments |
|---|---|---|---|---|---|
| Laser Bias Current (IBIAS) | 2 | 100 | 100 | mA | Output Current |
| Compliance Voltage (IBIAS) | 1.2 VCC | V | IBIAS when ALS High | ||
| Modulation Current (IMODP, IMODN) | 5 | 90 | 90 | mA | Output Current |
| Compliance Voltage (IMOD) | 1.5 VCC | V | IMOD when ALS High | ||
| Rise Time | 60 | 104 | 104 | ps | |
| Fall Time | 60 | 96 | 96 | ps | |
| Random Jitter | 0.8 | 1.1 | 1.1 | ps rms | |
| Deterministic Jitter | 35 | ps | 20 mA < IMOD < 90 mA | ||
| Pulse Width Distortion | 30 | ps | 20 mA < IMOD < 90 mA | ||
| Operating Supply Voltage | 3.0 | 3.3 | 3.6 | V | |
| Operating Temperature | -40 | +85 | °C | ||
| Package Type | 24-WFQFN Exposed Pad, CSP |
Key Features
- Dual-loop control of the average power and extinction ratio (ER) to compensate for variations in laser characteristics over temperature and aging.
- Bias and modulation current monitoring.
- Fail alarms and automatic laser shutdown (ALS).
- Support for single-rate operation from 50 Mbps to 3.3 Gbps, or multirate operation from 155 Mbps to 3.3 Gbps.
- Voltage setpoint control and resistor setpoint control for average power and ER settings.
- Compatible with Analog Devices MicroConverter family (e.g., ADuC7019, ADuC7020, ADuC7023) and limiting amplifier family (e.g., ADN2890, ADN2891, ADN2892).
- Space-saving 4 mm × 4 mm LFCSP package.
Applications
- Multirate OC3 to OC48-FEC SFP/SFF modules.
- 1×/2×/4× Fibre Channel SFP/SFF modules.
- LX-4 modules.
- DWDM/CWDM SFP modules.
- 1GE SFP/SFF transceiver modules.
Q & A
- What is the primary function of the ADN2872ACPZ-RL?
The ADN2872ACPZ-RL is a laser diode driver IC designed for high-speed laser applications in SFP and SFF modules.
- What data rates does the ADN2872ACPZ-RL support?
The device supports single-rate operation from 50 Mbps to 3.3 Gbps and multirate operation from 155 Mbps to 3.3 Gbps.
- How does the ADN2872ACPZ-RL manage variations in laser characteristics?
The device features dual-loop control of the average power and extinction ratio (ER), which automatically compensates for variations in laser characteristics over temperature and aging.
- What are the key monitoring and alarm features of the ADN2872ACPZ-RL?
The device provides bias and modulation current monitoring, fail alarms, and automatic laser shutdown (ALS).
- What is the operating supply voltage range of the ADN2872ACPZ-RL?
The operating supply voltage range is from 3.0 V to 3.6 V.
- What is the operating temperature range of the ADN2872ACPZ-RL?
The operating temperature range is from -40°C to +85°C.
- What package type is the ADN2872ACPZ-RL available in?
The device is available in a 24-WFQFN Exposed Pad, CSP package.
- Is the ADN2872ACPZ-RL compatible with other Analog Devices products?
Yes, it is compatible with Analog Devices MicroConverter family and limiting amplifier family.
- What are some typical applications of the ADN2872ACPZ-RL?
Typical applications include multirate OC3 to OC48-FEC SFP/SFF modules, Fibre Channel SFP/SFF modules, LX-4 modules, DWDM/CWDM SFP modules, and 1GE SFP/SFF transceiver modules.
- Is the ADN2872ACPZ-RL RoHS compliant?
No, the ADN2872ACPZ-RL is not RoHS compliant.
