DS1874 Overview
Key Specifications
Mount Type: Surface Mount
Pins: 28
Max Voltage (typical range): 3.9 V
Min Voltage (typical range): 2.85 V
Description
The DS1874 controls and monitors all functions for SFF, SFP, and SFP+ modules including all SFF-8472 functionality. The combination of the DS1874 with the MAX3798/MAX3799 laser driver/limiting amplifier provides APC loop, modulation current control, and eye safety functionality.
Key Features
- Meets All SFF-8472 Control and Monitoring Requirements
- Laser Bias Controlled by APC Loop and Temperature LUT to Compensate for Tracking Error
- Laser Modulation Controlled by Temperature LUT
- Two 9-Bit Delta-Sigma Outputs with 36 Entry Temperature LUTs
- Digital I/O Pins: Five Inputs, Five Outputs
- Comprehensive Fault-Measurement System with Maskable Laser Shutdown Capability
- Flexible, Two-Level Password Scheme Provides Three Levels of Security
- 256 Additional Bytes Located at A0h Slave Address
- I2C-Compatible Interface
- 3-Wire Master to Communicate with the MAX3798/ MAX3799 Laser Driver/Limiting Amplifier
