LMH6526SP National Semiconductor, LMH6526SP Datasheet
LMH6526SP
Specifications of LMH6526SP
Related parts for LMH6526SP
LMH6526SP Summary of contents
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... External resistors determine oscillator frequency and ampli- tude for each setting. The write and erase channels can be switched on and off through dedicated LVDS interface pins. Block Diagrams LLP ® registered trademark of National Semiconductor. LMH ™ trademark of National Semiconductor Corporation. © 2005 National Semiconductor Corporation Features n Fast switching: Rise and fall times: 0 ...
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... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. ESD Tolerance Human Body Model (Note 2) Machine Model (Note 3) + − Supply Voltages V – V Differential Input Voltage Output Short Circuit to Ground (Note 4) ...
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DC Electrical Characteristics Unless otherwise specified, all limits guaranteed for T Symbol Parameter V TTL High Voltage THI V TTL High Voltage THI V Enable High Voltage EHI I Supply Current, Power Down Spd I Supply Current, Read Mode, ...
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... Note 12: Total input current (all 4 channels equal) and output currents are summed together (see typical performance characteristics). Ordering Information Package Part Number LMH6525SP NOPB LMH6525SPX NOPB 28-Pin LLP LMH6526SP NOPB LMH6526SPX NOPB www.national.com (Continued) = 25˚ and 40 mA pulse OUT Conditions LMH6525 ...
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Connection Diagrams 28-Pin LLP (LMH6525) Top View Pin Description Pin # Description 1. Laser driver output channel A 2. LVDS Oscillator Enable pin 3. LVDS Oscillator Enable pin B (only LMH6525) 4. Read Channel Enable pin 5. Chip Enable pin ...
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Pin Description (Continued) Pin # Description 27. Laser driver output channel B 28. Ground Connection B Truth Tables IOUT Control ENABLE ENR Oscillator Control ENABLE ENOSC 0 X ...
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Waveforms (Continued) Enable Timing Read Timing Write Timing Oscillator Timing 7 20110111 20110112 20110113 20110114 www.national.com ...
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Detailed Block Diagram www.national.com 20110115 8 ...
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Application Schematic 9 20110116 www.national.com ...
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Typical Performance Characteristics Oscillator Amplitude vs. R Oscillator Frequency vs. R Noise vs. Frequency www.national.com + ± 25˚ 5V Oscillator Amplitude vs 20110103 F 20110104 Headroom & Output Current vs. Total Input ...
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Application Section CIRCUIT DESCRIPTION General & Spec The LMH6525/6526 is a 4-channel-input, dual-output laser driver. The dual outputs are meant to drive two different laser diodes, one for CD reading and writing and one for DVD reading and writing. The ...
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Application Section (Continued) voltage of the part at the power pin is 5.25V and this means the supply line loss is 0.25V 5.5V supply voltage the part can drive laser diodes with a forward voltage in access of ...
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... A helpful tool for calculating impedances of transmission lines is the: ‘Transmission Line Rapidesigner’ available from the National Semiconductor Interface Products Group. Application Note AN-905 details the use of this handy software tool. ...
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Application Hints (Continued) FIGURE 4. Decoupling Capacitors OSCILLATOR RESISTORS The resistors and/or potentiometers used to set oscillator frequency or amplitude should be as close to the part as possible. If the grounds are split when using a single-sided flex circuit, ...
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