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PDF ATLS1A103 Data sheet ( Hoja de datos )
| Número de pieza | ATLS1A103 | |
| Descripción | Low Noise Constant Current Laser Driver | |
| Fabricantes | AT | |
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Analog
Technologies
Low
Noise
Constant
Current
Laser Driver
ATLS1A103
FEATURES
Ultra Low Noise: <10µA*
High Current without Heat Sink: 1A
High Absolute Accuracy: <0.1%
www.datasheet4u.com
High Stability: 100ppm/°C
Dual Modulation Ports: High/Low Speed
Complete Shielding
Compact Size
SMT Package Available
*Total RMS between 0.1Hz to 0.5MHz.
APPLICATIONS
Drive laser diodes with low noise, including DPSSL, EDFA,
fiber laser, direct diode lasers, etc.
DESCRIPTION
The ATLS1A103 is an electronic module designed for
driving diode lasers with up to 1A low noise current. The
output voltage is 1.5V to 4V when powered by a 5V power
supply. It uses two drivers, one is switch mode and the other
is linear mode. The former results in high power efficiency,
the latter keeps the output noise low and allows high
modulation speed.
When the maximum power consumed by the controller is
maintained to <1W, it does not require a heat sink to
operate.
The output current of the ATLS1A103 can be set linearly by
an input voltage or modulated by an external signal of up to
350KHz in bandwidth, resulting in 1µS rise and fall time.
A high stability low noise 2.5V reference voltage is
provided internally for setting the output current. This
reference can also be used as the voltage reference for
external ADCs (Analog to Digital Converters) and DACs
(Digital to Analog Converters).
The ATLS1A103 is packaged in a 6 sided metal enclosure,
which blocks EMIs (Electro-Magnetic Interferences) to
prevent the controller and other electronics from interfering
each other.
SDN 1 12 VPS
GND 2 11 PGND
2P5V
LILM
3
4
10
9
LDC
LDA 19.4
LIS 5 8 TMPO
LIO 6 7 LPGD
14.5
Figure 1 Pin Names and Locations
The controller has 2 types of packages: through hole mount and
surface mount. The latter saves PCB space the controller takes.
Figure 1 is the actual size top view of the ATLS1A103, which
shows the pin names and locations. Its thickness is 5mm.
SPECIFICATIONS
Maximum output current:
1A
Output current noise:
(0.1Hz to 0.5MHz RMS)
<10µA
Current set voltage range:
0 to 2.5V
Current limit set voltage range:
0 to 0.5V
Modulation response bandwidth:
350KHz
Minimum drop out voltage:
0.3V + 0.5×Iout
(Iout: output current)
Power supply voltage range:
3.5V to 5.5V
Operating case temperature:
−25°C to 85°C
OPERATION PRINCIPLE
Figure 2 is the block diagram of the controller.
The shut down control circuit accept signals from 3 sources:
external shut down, over-current and over-temperature signals.
When one of these signals is activated, the controller is shut
down. Only when all these 3 signals go up, the soft-start circuit
starts enabling the low noise driver.
The temperature sensor circuit turns down the controller upon
detecting the temperature to be 120°C.
The current limiter circuit monitors the output current and
shuts down the controller upon detecting the output current
exceeds the pre-set value.
When controller is shut down, the voltage reference is also shut
down.
SDN
1
GND
2
LISL
3
LILM
4
LIS
5
LIO
6
10pF
Voltage
reference
Current
limiter
100KΩ
VPS
12
Shut-
down
& soft-
start
circuit
Temp.
sensor
Current
sensor &
low noise
driver
PGND
11
LDC
10
Laser
Diode
LDA
9
TMPO
8
LPGD
7
Figure 2 Block Diagram
5 50 E. Weddell Drive, Suit e 4, Sunnyvale, CA 94 08 9, U. S. A. Tel.: (4 08 ) 7 47 -9 76 0, Fax: (40 8) 74 7-97 70 , W eb: w w w .analogt echnologies.com
© Copyrights 2000 – 2006, Analog Technologies, Inc. All Rights Reserved. Updated on 1/23/2006
1
1 page  
Analog
Technologies
Low
Noise
Constant
Current
Laser Driver
ATLS1A103
ORDERING INFORMATION
Part #
www.datasheeAt4TuL.cSo1mA103−D
ATLS1A103−S*
Description
Controller in DIP package
Controller in SMT package*
* This surface mount package cannot be soldered by reflow oven. It must be soldered manually with the iron
temperature < 610°F (≈321°C).
PRICES
Quantity
ATLS1A103−D
ATLS1A103−S
1−9
$95
10 − 49
$85
50 − 199
$75
200 − 999
$65
≥1000
$55
NOTICE
1. ATI warrants performance of its products for one year to the specifications applicable at the time of sale, except for those
being damaged by excessive abuse. Products found not meeting the specifications within one year from the date of sale can
be exchanged free of charge.
2. ATI reserves the right to make changes to its products or to discontinue any product or service without notice, and advise
customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied
on is current and complete.
3. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgment, including
those pertaining to warranty, patent infringement, and limitation of liability. Testing and other quality control techniques are
utilized to the extent ATI deems necessary to support this warranty. Specific testing of all parameters of each device is not
necessarily performed, except those mandated by government requirements.
4. Customers are responsible for their applications using ATI components. In order to minimize risks associated with the
customers’ applications, adequate design and operating safeguards must be provided by the customers to minimize inherent
or procedural hazards. ATI assumes no liability for applications assistance or customer product design.
5. ATI does not warrant or represent that any license, either express or implied, is granted under any patent right, copyright,
mask work right, or other intellectual property right of ATI covering or relating to any combination, machine, or process in
which such products or services might be or are used. ATI’s publication of information regarding any third party’s products
or services does not constitute ATI’s approval, warranty or endorsement thereof.
6. IP (Intellectual Property) Ownership: ATI retains the ownership of full rights for special technologies and/or techniques
embedded in its products, the designs for mechanics, optics, plus all modifications, improvements, and inventions made by
ATI for its products and/or projects.
5 50 E. Weddell Drive, Suit e 4, Sunnyvale, CA 94 08 9, U. S. A. Tel.: (4 08 ) 7 47 -9 76 0, Fax: (40 8) 74 7-97 70 , W eb: w w w .analogt echnologies.com
© Copyrights 2000 – 2006, Analog Technologies, Inc. All Rights Reserved. Updated on 1/23/2006
5
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| Páginas | Total 5 Páginas | |
| PDF Descargar | [ Datasheet ATLS1A103.PDF ] | |
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