AK2573A Overview
The AK2573A is a 1chip LDD (Laser Diode Driver) and an APC (Auto Power Control) for laser direct modulation application. It contains up to 156M LDD, programmable duty adjustment, BIAS and modulation currents, a digital feedback circuit, BIAS and modulation current monitors, failure alarms, I2CTM interface, an EEPROM for storing LD characteristics and user information, and TXFAULT detection for SFP application. The...
AK2573A Key Features
- 1 chip 125M / 156M Laser Diode Driver (LDD) + Digital APC (APC_FF and APC_FB)
- Programmable laser BIAS and modulation current controlled by an on-chip temperature sensor (APC_FF)
- Digital feedback circuit for APC (APC FB)
- Two current output 8 bit DACs, I-DAC1: 85mA sink for modulation current w . D a t a S h e for e BIAS t 4 current U . c o
- TXFAULT detection and 1kbit ID Field (EEPROM) for SFP (Small Form-factor Pluggable) support
- I2CTM patible digital I/F
- Duty adjustment
- Power failure alarm (OPTALM), Over current alarm (CURRALM), Temperature alarm (TEMPALM), Data alarm (DATAALM) and TXFAUL
- BIAS and modulation current monitors (- 0.0095)
- Single 3.3V +/- 0.2V operation