AK2574 Overview
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. The AK2574 has an APC FF (Feed-forward) function that supplies a...
AK2574 Key Features
- 156M Laser Diode Driver for burst mode application
- 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: 85mA sink for modulation current I-DAC2: 54mA sink for BIAS current w . D t a ala
- Power a failure (CLKALM)
- I2CTM patible digital I/F
- Duty adjustment
- Single 3.3V +/- 0.2V operation