T0806-TCQG

Manufacturer Part NumberT0806-TCQG
DescriptionIC LASER DVR 3CH 2-OUTPUT 16SSOP
ManufacturerAtmel
TypeLaser Diode Driver (CD/DVD)
T0806-TCQG datasheet
 

Specifications of T0806-TCQG

Number Of Channels3Voltage - Supply4.5 V ~ 5.5 V
Operating Temperature0°C ~ 70°CPackage / Case16-SSOP
Mounting TypeSurface MountLead Free Status / RoHS StatusLead free / RoHS Compliant
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Features
Current-controlled Output Current Source, 3 Input Channels
Two Selectable Outputs for Grounded Laser Diodes
Output Current per Channel up to 250 mA
Total Output Current to 300 mA (Minimum)
Rise Time 1.0 ns, Fall Time 1.1 ns
On-chip RF Oscillator
Control of 2 Different Swings by Use of 2 external Resistors
Oscillator Frequency Range from 200 MHz to 600 MHz
Oscillator Swing to 100 mA
Single 5V Power Supply
Common Enable/Disable Input
TTL/CMOS Control Signals
Small PB-free QFN16 (4 mm
4 mm) or SSO16 Package
Applications
DVD-ROM with CD-RW Capability (Combo Drives)
Combo Drives with CD and DVD Writing Capability
1. Description
The T0806 is a laser diode driver for the operation of two different grounded laser
diodes for DVD-RAM (650 nm) and CD-RW (780 nm) drives. It includes three chan-
nels for three different optical power levels which are controlled by a separate IC. The
read channel generates a continuous output level whereas channels 2 and 3 are pro-
vided 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 outputs IOUTA or IOUTB by the select input
SELA. Each channel can contribute up to 250 mA to the total output current of up to
300 mA. A total gain of 100 is 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 differ-
ent 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.
3-channel Laser
Driver with RF
Oscillator and
2 Outputs
T0806
Summary
Note: This is a summary document. A complete dorcument
is available under NDA. For more information, please con-
tact your local Atmel sales office.
Rev. 4522FS–DVD–11/05

T0806-TCQG Summary of contents

  • Page 1

    ... Combo Drives with CD and DVD Writing Capability 1. Description The T0806 is a laser diode driver for the operation of two different grounded laser diodes for DVD-RAM (650 nm) and CD-RW (780 nm) drives. It includes three chan- nels for three different optical power levels which are controlled by a separate IC. The read channel generates a continuous output level whereas channels 2 and 3 are pro- vided as write channels with very fast switching speeds ...

  • Page 2

    ... Figure 1-1. Block Diagram ENABLE ENOSC T0806 2 I3 Channel 3 NE3 I2 Channel 2 NE2 IR Read channel RF oscillator RF RSA RSB IOUTA IOUTB SELA 4522FS–DVD–11/05 ...

  • Page 3

    ... Low: selects IOUTB, RSB Output current source B for laser diode External resistor to GND sets swing of oscillator B External resistor to GND sets swing of oscillator A Ground Output current source A for laser diode +5V power supply for IOUT and circuit 16 VCC1 15 IOUTA 14 GND 13 RSA 12 RSB 11 IOUTB 10 SELA 9 VCC2 T0806 3 ...

  • Page 4

    ... RSA Analog 12 GND Supply 13 IOUTA Analog 14 VCC1 Supply 15 IR Analog 16 I2 Analog Paddle GND Supply T0806 NE2 10 3 NE3 Type Function Input current, bias voltage approximately GND External resistor to GND sets oscillator frequency Digital control of channel 2 (low active) Digital control of channel 3 (low active) ...

  • Page 5

    ... IN1 V –0 IN2 V –0 OUT I 350 OUT I 300 OUT (IR, I2, I3) (1) P 0.7 MAX T 150 J T –65 to +125 Stg Symbol Value R 135 thJA Symbol Value V 4 < 3 RSA, RSB +70 amb T0806 Unit – ( °C °C Unit K/W Unit V mA > > ...

  • Page 6

    ... Ordering Information Extended Type Number T0806-TCQG T0806-PEQG 7. Package Information T0806 6 Package SSO16 Pb-free QFN16 ( mm) Remarks Taped and reeled, Pb-free Taped and reeled, Pb-free 4522FS–DVD–11/05 ...

  • Page 7

    ... T0806 7 ...

  • Page 8

    ... Disclaimer: The information in this document is provided in connection with Atmel products. No license, express or implied, by estoppel or otherwise, to any intellectual property right is granted by this document or in connection with the sale of Atmel products. EXCEPT AS SET FORTH IN ATMEL’S TERMS AND CONDI- TIONS OF SALE LOCATED ON ATMEL’S WEB SITE, ATMEL ASSUMES NO LIABILITY WHATSOEVER AND DISCLAIMS ANY EXPRESS, IMPLIED OR STATUTORY WARRANTY RELATING TO ITS PRODUCTS INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT ...