ISL58315CRTZ

Get Full Datasheet High Speed Triple Laser Diode Drivers ISL58315 The ISL58315 is a high-speed, triple-output laser diode driver (LDD) for laser scanning projector systems, which require three channels modulated at high speed with independent current control. Features Each output channel provides laser-independent current control for threshold and color DACs. Separate scale DACs allow independent scaling of both threshold and color DAC output values. This allows control of projector brightness and can be used to simplify automatic power calibration (APC) for laser-based systems. • Up to 1A of peak current output Pixel data information is transferred through the LDD's high-speed 10-bit or 15-bit parallel video interface. Three parallel interface modes provide flexibility and allow users a trade-off among speed, power and bus width. Pixel data employs a double data rate scheme, allowing video data to be transferred using both clock edges. • High-speed, triple-output laser diode driver supporting up to 720-pixel HD resolution • Fast output switching speeds with pulse rise/fall times of 1ns to 2ns for crisp pixels • Intersil patented laser voltage sampler function provides dynamic power management capability to dramatically minimize system power • Intersil patented SmartLinearizer™ DAC feature provides a linear transfer function (input video code to green laser output), eliminating the need for DSP controller processing algorithms required for non-linear green lasers CONFIDENTIAL Applications • Laser-based Pico Projectors • Flexible 10-bit or Intersil patented 15-bit RGB pixel input formats supported to reduce speed and power. 300MHz maximum data Input rate supported for 10-bit RGB mode • Blanking time power reduction reduces LDD current consumption to 3mA typical • RGB Scanning and Field-based laser projection systems • Generic laser-based applications requiring multiple, independently controlled lasers • Programmable return-to-zero (RTZ) function provides maximum flexibility VSL VDD SEN S E R IA L IN T E R F A C E SCLK S D IO D [1 4 ..0 ]* VSSA • Single 3.3V supply and 1.8V video interface compatible for low power http://www.intersil.com/applications/PicoProjector%28MEMS%29.asp VDDA • See application block diagram for Pico Projector (MEMS) at: HTRREF • Integrated heater function for SHG green lasers reduces external components HTR Related Literature MON HEATER ADC GLUE L O G IC O UTPUT CHANNEL 3 IO U T3 CLK DATA IN T E R F A C E AND R E G IS T E R S LO W P NC O UTPUT CHANNEL 2 IO U T2 O UTPUT CHANNEL 1 IO U T1 RTZ RSET Vss CE NO TE: * T H E F O L L O W IN G D A T A L IN E S H A V E A L T E R N A T IV E U S E , D E P E N D IN G O N R E G IS T E R S E T T IN G : D 2 = E N 3 , D 4 = E N 2 , D 6 = E N 1 , A N D D 1 0 = S Y N C FIGURE 1. BLOCK DIAGRAM September 30, 2011 FN7543.0 1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas Inc. 2011. All Rights Reserved Intersil (and design) and SmartLinearizer are trademarks owned by Intersil Corporation or one of its subsidiaries. All other trademarks mentioned are the property of their respective owners. ISL58315 CONFIDENTIAL For additional products, see www.intersil.com/product_tree Intersil products are manufactured, assembled and tested utilizing ISO9000 quality systems as noted in the quality certifications found at www.intersil.com/design/quality Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com 2 FN7543.0 September 30, 2011