Description

The AK2574 is a 1chip LDD (Laser Diode Driver) and an APC (Auto Power Control) for burst mode application such as ATM-PON. It contains not only 156M LDD for modulatin current but also BIAS current switching, programmable BIAS and modulation currents, duty adjustment, I2CTM interface, an EEPROM for storing LD characteristics and user information.

Features

- 156M Laser Diode Driver forburst modeapplication

- BIAS current switching

- Programmable laser BIAS and modulation current controlled by an on-chip temperature sensor (APC_FF)

- Two current output 8 bit DACs, I-DAC1: 85mAsinkfor modulation current I-DAC2: 54mA sinkfor BIAS current

- Power failure alarm (TXACT), CLK failure alarm (CLKALM)

- I2CTMcompatible digital I/F

- Duty adjustment

- Single3.3V+/-0.2Voperation

Applications

ITU-T G.983 ATM-PON ONU