ISL58831CRZ-EVAL

ISL58831CRZ-EVAL Datasheet

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ISL58831CRZ-EVAL	ISL58831CRZ-EVAL (pdf)

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Home > Products > End Market Specific > Optical Storage > Laser Diode Drivers > ISL58831 ISL58831 Dual Laser Driver with APC Amplifier and Spread Spectrum Oscillator KEY FEATURES • "Shrink-small" outline package • Voltage-controlled output current source requiring one external set resistor per channel • Current-controlled output current source • CH2 to 235mA max • CH3 to 170mA max • CH4 to 100mA max • Rise time = 0.8ns • Fall time = 0.8ns • On-chip oscillator with frequency and amplitude control by use of external resistors to ground • Oscillator to 600MHz • Oscillator to 100mAP-P • Single +5V supply ±10% • Disable feature for power-up protection and power savings • 200V/µs I/V amplifier • Internal spread spectrum modulation to reduce peak EMI • Pb-free plus anneal RoHS compliant TYPICAL DIAGRAM Request Full Data Sheet DESCRIPTION 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. The SEL1 pin, when high, selects the DVD write laser. Positive current supplied to the IIN lines, through a userselected 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. The 100mAP-P max oscillator is switched on and off by the OSCEN line. The SEL1 line allows the oscillator to operate at different amplitudes and frequencies for each laser. 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. 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 Follow Us Legal \| Privacy \| Investor Relations \| Feedback \| Site Map Intersil Americas LLC 4/24/2013

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Home > Products > End Market Specific > Optical Storage > Laser Diode Drivers > ISL58831

ISL58831

Dual Laser Driver with APC Amplifier and Spread Spectrum Oscillator

KEY FEATURES
• "Shrink-small" outline package
• Voltage-controlled output current source requiring one external set resistor per channel
• Current-controlled output current source
• CH2 to 235mA max
• CH3 to 170mA max
• CH4 to 100mA max
• Rise time = 0.8ns
• Fall time = 0.8ns
• On-chip oscillator with frequency and amplitude control by use of external resistors to ground
• Oscillator to 600MHz
• Oscillator to 100mAP-P
• Single +5V supply ±10%
• Disable feature for power-up protection and power savings
• 200V/µs I/V amplifier
• Internal spread spectrum modulation to reduce peak EMI
• Pb-free plus anneal RoHS compliant

TYPICAL DIAGRAM

Request Full Data Sheet

DESCRIPTION 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.

The SEL1 pin, when high, selects the DVD write laser. Positive current supplied to the IIN lines, through a userselected 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.

The 100mAP-P max oscillator is switched on and off by the OSCEN line. The SEL1 line allows the oscillator to operate at different amplitudes and frequencies for each laser.

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.

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

Follow Us Legal | Privacy | Investor Relations | Feedback | Site Map

Intersil Americas LLC
4/24/2013

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived ISL58831CRZ-EVAL Datasheet file may be downloaded here without warranties.

Datasheet ID: ISL58831CRZ-EVAL 639162