Asahi Kasei Microdevices AK2573A
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 has two APC functions; APC FF (Feed-forward) and APC FB (Feedback).
| Part No. |
AK2573A |
| Datasheet |
AK2573A
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| Manufacturer |
 Asahi Kasei Microdevices |
| Description |
125M / 156M Laser Diode Driver APC |
| Buy |
Stock & Price
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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 m I-DAC2: 54mA sink - TXFAULT detection and 1kbit ID Field (EEPROM) for SFP (Small Form-factor Pluggable) support - I2CTM compatible digital I/F - Duty adjustment - Power failure alarm (OPTALM), Over current alarm (CURRALM), Temperature alarm (TEMPALM), Data alarm (DATAALM) and TXFAULT for failure alarm - BIAS and modulation current monitors (* 0.0095) - Single 3.3V +/- 0.2V operation APPLICATIONS
STM-1 / OC-3 (156Mbps) Optical Interface Module TS–1000 (125Mbps) Optical Interface Module DESCRIPTION
APC FF supplies a programmed current in response to the temperature. APC FB provides a stable auto power control function with an internal digital feedback algorithm.
