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부품번호 | ATR0807 기능 |
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기능 | THREE CHANNEL LASER DRIVER | ||
제조업체 | ATMEL Corporation | ||
로고 | |||
전체 8 페이지수
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 Ω 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
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
4페이지 Package QFN16 (4 mm x 4 mm)
ATR0807
4723CS–DVD–07/03
7
7페이지 | |||
구 성 | 총 8 페이지수 | ||
다운로드 | [ ATR0807.PDF 데이터시트 ] |
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구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
부품번호 | 상세설명 및 기능 | 제조사 |
ATR0807 | THREE CHANNEL LASER DRIVER | ATMEL Corporation |
ATR0808 | Three Channel Laser Driver | ATMEL Corporation |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |