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ISL58831CRZ PDF预览

ISL58831CRZ

更新时间: 2024-11-05 01:15:03
品牌 Logo 应用领域
英特矽尔 - INTERSIL PC
页数 文件大小 规格书
12页 344K
描述
Dual Laser Driver with APC Amplifier and Spread Spectrum Oscillator

ISL58831CRZ 数据手册

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DATASHEET  
Data Sheet  
Dual Laser Driver with APC Amplifier and Spread  
Spectrum Oscillator  
ISL58831  
Features  
The ISL58831 is a combination read + 3 write level laser driver  
and IV amplifier, with an extra read + oscillator ROM channel  
for use in dual-laser ‘Combo’ drivers. A separate (amplitude  
and frequency) oscillator modulates the selected output for  
laser noise reduction during read or write. All these functions  
are provided in a 24 Ld QFN package.  
• “Shrink-small” outline package  
• Voltage-controlled output current source requiring one  
external set resistor per channel  
• Current-controlled output current source  
• CH2 to 235mA maximum  
• CH3 to 170mA maximum  
• CH4 to 100mA maximum  
• Rise time = 0.8ns  
The SEL1 pin, when high, selects the DVD (write) laser. Positive  
current supplied to the I lines, through a user-selected  
IN  
resistor, allow the full-scale range of each amplifier to be  
matched to the full-scale range of the users control DACs.  
When the write laser is selected, and the WEN pins are  
switched low, the respective current is summed to the output  
with 1ns rise and fall times. Write channel 2 has 240mA  
output capability with an 250X gain amplifier.  
• Fall time = 0.8ns  
• On-chip oscillator with frequency and amplitude control by  
use of external resistors to ground  
• Oscillator to 600MHz  
The 100mA  
(maximum) oscillator is switched on and off by  
P-P  
• Oscillator to 100mA  
P-P  
the OSCEN line. The SEL1 line allows the oscillator to operate  
at different amplitudes and frequencies for each laser.  
• Single +5V supply (±10%)  
• Disable feature for power-up protection and power savings  
• 200V/µs I/V amplifier  
The entire chip is powered down when ENABLE is low. The user  
can define the gain of the I/V amplifier. With a slew rate of  
200V/µs, the I/V amplifier can normally settle to 1% within  
30ns.  
• Internal spread spectrum modulation to reduce peak EMI  
• Pb-free (RoHS compliant)  
An internal spread spectrum circuit modulates the oscillator  
frequency to help reduce peak EMI.  
Applications  
• Combo CD-R + DVD-R  
• DVD±RW to 8X  
• Writable optical disk drives  
January 28, 2016  
FN7440.1  
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.  
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas LLC 2006, 2016. All Rights Reserved  
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.  
All other trademarks mentioned are the property of their respective owners.  
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