AK2571

AKM Confidential AK2571 = Preliminary = for WDM Laser Diodes AK2571 Single-Chip Automatic Power/Temperature Control Features Single Chip LSI that integrates APC (Auto Power Control) and ATC (Auto Temperature Control) functions for WDM Laser Module A controlling TEC (Thermal Electrical Cooler) stabilizes the temperature of LD module in the range of +/-0.1°C by PID algorithm. Parameters controlling Laser Diode are user programmable and stored in EEPROM Internal Temperature Sensor detects on-chip temperature, enabling compensation internal and external www.DataSheet4U.com components that may be affected by changing ambient temperature. Autonomous operation (internal oscillator and logic). Pin-selectable wavelength data for tunable laser diodes (four options). Single 3.3V operation 64-pin LQFP or Bare chip Description The AK2571 is a single-chip solution for WDM Laser Diode Module applications. It integrates both ATC (Auto Temperature Control) and APC (Auto Power Control) functions in a small 64-pin LQFP or bare die package.. The ATC function of the AK2571 detects the LD module temperature via an external thermister and uses the PID algorithm to control the Thermo-Electric Cooler (TEC). This provides +/- 0.1°C stabilization.. A customer can program the appropriate PID parameters into the internal EEPROM , thereby providing compensation characteristics for each Laser Diode. TEC control is handled through either PWM or Analog current control through I-DAC4. These are easily s...