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ATR0807 데이터시트 PDF




ATMEL Corporation에서 제조한 전자 부품 ATR0807은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


 

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부품번호 ATR0807 기능
기능 THREE CHANNEL LASER DRIVER
제조업체 ATMEL Corporation
로고 ATMEL Corporation 로고


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ATR0807 데이터시트, 핀배열, 회로
www.DataSheet4U.com
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 Package
Applications
DVD-ROM with CD-RW Capability
DVD+RW with CD-RW Capability
DVD-RW with CD-RW Capability
Writable Optical Drives
Three Channel
Laser Driver
with RF
Oscillator and
Two Outputs
ATR0807
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 chan-
nels 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 refer-
ence 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.
(Summary)
Rev. 4723CS–DVD–07/03
1




ATR0807 pdf, 반도체, 판매, 대치품
Pin Configuration QFN16
Figure 3. Pinning QFN16
16 15 14 13
I3 1
12 GND
RF 2
11 RSA
NE2 3
10 RSB
NE3 4
9 IOUTB
5678
Pin Description
Pin Symbol
1 I3
2 RF
3 NE2
4 NE3
5 ENABLE
6 ENOSC
7 VCC2
8 SELA
9
10
11
12
13
14
15
16
Paddle
IOUTB
RSB
RSA
GND
IOUTA
VCC1
IR
I2
GND
Type
Analog
Analog
Digital
Digital
Digital
Digital
Supply
Digital
Analog
Analog
Analog
Supply
Analog
Supply
Analog
Analog
Supply
Function
Input current, bias voltage approximately GND
External resistor to GND sets frequency of oscillator
Digital control of channel 2 (low active)
Digital control of channel 3 (low active)
Enables output current (high active)
Enables RF oscillator (high active)
+5 V power supply for IOUT
High: selects IOUTA, RSA
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
+5 V power supply for circuit
Input current, bias voltage approximately GND
Input current, bias voltage approximately GND
Ground
4 ATR0807
4723CS–DVD–07/03

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ATR0807 전자부품, 판매, 대치품
Package QFN16 (4 mm x 4 mm)
ATR0807
4723CS–DVD–07/03
7

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관련 데이터시트

부품번호상세설명 및 기능제조사
ATR0807

THREE CHANNEL LASER DRIVER

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Three Channel Laser Driver

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