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ATR0807, ATR0807TCQ, ATR0808

Table of contents:
Info of ATR0807
Info of ATR0807TCQ
Info of ATR0808

ATR0807, ATR0807TCQ, ATR0808 Selling Leads, Datasheet

MFG:SSOP-16P Package Cooled:AT D/C:03+

ATR0807, ATR0807TCQ, ATR0808 Datasheet download

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Part Number: ATR0807

MFG: SSOP-16P

Package Cooled: AT

D/C: 03+

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ATR0807 General Description

The ATR0807 is a laser diode driver for the operation of two different grounded laser diodes for DVD-RW/DVD+RW (650 nm) and CD-RW (780 nm). It includes three channels for three different optical power levels which are controlled by a separate IC. The read channel generates a continuous output level, whereas the channels 2 and 3 are provided as write channels with very fast switching speeds. Write current pulses are enabled when a low signal is applied to the NE pins. All channels are summed together and switched to one of the two IOUTA or IOUTB outputs by the select input SELA. Each write channel (channel 2 and 3) can contribute up to 350 mA to the total output current, up to 500 mA. The read channel can contribute up to 150 mA. Total gains of 100 (read channel), 250 (channel 2 and 3) are provided between each reference current input and the selected output. Although, the reference inputs are current inputs, voltage control is possible by using external resistors. An on-chip RF oscillator is provided to reduce laser mode hopping noise during read mode. Swing can be set ndependently for the two selectable outputs with two different resistors. Oscillation is enabled by a high signal at the ENOSC pin. Complete output current and oscillator switch-off is achieved by a low signal at the ENABLE input.

ATR0807 Maximum Ratings

Parameters	Symbol	Value	Unit
Supply voltage	V_CC	-0.5 to +6.0	V
Input voltage at any input	V_in	-0.5 to V_CC +0.5	V
Power dissipation	P_max	0.7 (1) to 1 (2)	W
Output voltage	V_out	-0.5 to V_CC-1	V
Junction temperature	T_j	150	°C
Storage temperature	T_stg	-65 to +125	°C

Notes: 1. RthJA 115 K/W at Tamb = 70°C
2. RthJA 115 K/W at Tamb = 25°C

ATR0807 Features

• Current-controlled Output Current Source with 3 Input Channels
• Two Selectable Outputs for Grounded Laser Diodes
• Output Current per Write Channel: 350 mA
• Total Output Current: 500 mA
• 500 Channel Input Resistance
• On-chip RF Oscillator
• Control of Two Different Swings by Use of Two External Resistors
• Oscillator Frequency Range from 200 MHz to 500 MHz
• Oscillator Swing: 100 mA
• Single 5 V Power Supply
• Common Enable/Disable Input
• TTL/CMOS Control Signals
• Small Pb-free QFN16 (4 mm x 4 mm) or SSO16 Packa

ATR0807 Typical Application

• DVD-ROM with CD-RW Capability
• DVD+RW with CD-RW Capability
• DVD-RW with CD-RW Capability
• Writable Optical Drives

ATR0807 Connection Diagram

ATR0808 General Description

The ATR0808 is a laser diode driver for the operation of two different grounded laser diodes for DVD-RW/DVD+RW (650 nm) and CD-RW (780 nm). It includes three channels for three different optical power levels which are controlled by a separate IC. The read channel generates a continuous output level, whereas the channels 2 and 3 are provided as write channels with very fast switching speeds. Write current pulses are enabled when a low signal is applied to the NE pins. All channels are summed together and switched to one of the two IOUTA or IOUTB outputs by the select input SELA. Each write channel (channel 2 and 3) can contribute up to 350 mA to the total output current, up to 500 mA. The read channel can contribute up to 150 mA. Total gains of 100 (read channel), 250 (channel 2 and 3) are provided between each reference current input and the selected output. Although, the reference inputs are current inputs, voltage control is possible by using external resistors. An on-chip RF oscillator is provided to reduce laser mode hopping noise during read mode. Swing can be set independently for the two selectable outputs with two different resistors. Oscillation is enabled by a high signal at the ENOSC pin. Complete output current and oscillator switch-off is achieved by a low signal at the ENABLE input.

ATR0808 Maximum Ratings

Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

Parameters	Symbol	Value	Unit
Supply voltage	V_CC	-0.5 to +6.0	V
Input voltage at any input	V_in	-0.5 to V_CC +0.5	V
Power dissipation	P_max	0.7⁽¹⁾ to 1⁽²⁾	W
Output voltage	V_out	-0.5 to V_CC -1	V
Junction temperature	T_j	150	°C
Storage temperature	T_stg	-65 to +125	°C

Notes: 1. R_thJA 115 K/W at T_amb= 70°C
2. R_thJA 115 K/W at T_amb= 25°C

ATR0808 Features

• Current-controlled Output Current Source with 3 Input Channels
• Two Selectable Outputs for Grounded Laser Diodes
• Output Current per Write Channel: 350 mA
• Total Output Current: 500 mA
• 200 Channel Input Resistance
• On-chip RF Oscillator
• Control of Two Different Swings by Use of Two External Resistors
• Oscillator Frequency Range from 200 MHz to 500 MHz
• Oscillator Swing: 100 mA
• Single 5 V Power Supply
• Common Enable/Disable Input
• TTL/CMOS Control Signals
• Small Pb-free QFN16 (4 mm * 4 mm) or SSO16 Package

ATR0808 Typical Application

•DVD-ROM with CD-RW Capability
• DVD+RW with CD-RW Capability
• DVD-RW with CD-RW Capability
• Writable Optical Drives

ATR0808 Connection Diagram

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