Apc For Burst Mode Applicable Direct Modulation Laser Diode

The AK2572 enables to keep the opt ical power of the direct modulation LD (Laser Diode) constant by the APC (Automatic Power Control) circuit. It consists of a current programming function (APC_FF) responding to the temperature characteristics of each LD, and a Digital feedback function (APC_FB) to adjust the LD current based on the monitoring PD (Photo Diode) current. The AK2572 is also appl icable to the Burst mode transmission. The device equips a Power level ing function to Switch a temperature compensation programming data by either Hardware pin control or Register setting. The On-chip EEPROM (Non-volat i le memory) al lows to adjust and to keep the individual setting data for each LD characterist ics via 2-wire Digital Interface after being assembled into sub-system. As 1k bits User Area is al located in the EEPROM which supports the ID field of the SFP speci f icat ion, a proper operat ion required for the SFP module is realized by using the TXFAULT funct ion. By AKM Semiconductor, Inc.
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AK2572 Application circuits
AK2572 circuits
This is one application circuit of AK2572,If you need more circuits,please download AK2572's pdf datasheet.

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