AD9660KR

Overview

The AD9660KR is a highly integrated laser diode driver designed for optical disk drives, printers, and copiers. It features onboard light power control loops that utilize feedback from an external photodetector to manage bias and write power levels. The device supports switching between power levels at up to 200 MHz. Key electrical specifications include output rise and fall times of typically 1.5 ns and 2.0 ns, respectively. It operates on a single +5 V power supply, delivering an output current of 180 mA at 3 V or 200 mA at 2.5 V. Bias current is specified at 90 mA at 3 V, with modulation and offset currents at 60 mA and 30 mA, respectively.

Feature Summary

• Integrates two analog feedback loops for precise bias and write power level control using external photodetector signals
• Supports high-speed switching between power levels at frequencies up to 200 MHz
• Features fast output transition times to complement image enhancing techniques such as pulse width modulation
• Accepts TTL/CMOS compatible control signals for straightforward interface integration

Applications

• Optical disk drives requiring pulsed write formats
• Laser printers utilizing image enhancing techniques
• Copiers needing precise laser power management
• FO datacomm applications

Procurement Notes

Verify the specific suffix KR against the manufacturer's official datasheet to confirm package type and temperature range. Ensure compatibility with the required single +5 V supply voltage. Confirm that the external photodetector interface aligns with the onboard feedback loop requirements. Check for any RoHS compliance documentation relevant to the manufacturing date code.

Selection Notes

Select this component when designing systems that require precise laser diode power control with high-speed modulation capabilities. It is suitable for applications demanding fast rise and fall times to support advanced imaging techniques. Consider the single +5 V supply constraint and the need for an external photodetector for the feedback loops. Evaluate if the 200 MHz switching rate meets the system's data transmission or printing speed requirements.

Part Context

The AD9660KR belongs to Analog Devices' family of laser diode drivers. This series is engineered for high-performance optical applications where stability and speed are critical. The KR suffix typically denotes a specific package variant within the AD9660 product line, ensuring physical compatibility with standard PCB layouts for optical drive and printer modules.

Replacement Considerations

Review the AD96606 and AD9660KR-REEL variants listed in similar part databases. Verify pinout compatibility and electrical specifications before substitution. Ensure the alternative part supports the same 200 MHz switching rate and onboard feedback loop functionality.