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FEATURES

Ultra Low Noise: 6μAP-P @0.1Hz to 10Hz

High Output Current: 1A

High Absolute Accuracy: ± 0.2

High Stability: <100ppm/°C

Programmable Current Limit

Complete Shielding

Compact Size

100 Lead (Pb)-free and RoHS Compliant

DIP and SMT Packages Available

DESCRIPTION

The ATLS1A103 is an electronic module designed for

driving diode lasers with up to 1A low noise current. Figure

1 shows physical photo of ATLS1A103. The output voltage

is 0.4V to VVPS ? 1V when powered by a 5V power supply.

When the maximum power consumed by the controller is

maintained to <1W, it does not require a heat sink to operate.

The controller has temperature compensation network so

that the output current maintains the same even as the

controller temperature rises.

In case the controller temperature exceeds a preset limit, 120°C,

the controller will be shut down by itself to prevent the

controller from being damaged by the over heat.

The output current of the ATLS1A103 can be set by an input

voltage linearly or modulated by an external large signal of up

to 1MHz in bandwidth, resulting in a minimum 170nS rise and

fall time (Large signal) at the output current.

A highly stable 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/or DACs (Digital to Analog

Converters) which are utilized for converting the analog signals,

such as LIO which represents the output current, into digital

signals, and/or converting the digital signals into analog ones

for setting the analog voltages, such as LIS which sets the

output current.

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.

This laser driver can be evaluated by our evaluation board,

ATLS1A103DEV1.0.

There are 2 packaging versions available: DIP through hole

package and surface mount type.