sp8036dg4 Exar Corporation, sp8036dg4 Datasheet

sp8036dg4

Manufacturer Part Number

sp8036dg4

Description

Apc Amplifier With Integrated Photodiode And Gain Adjust Capability

Manufacturer

Exar Corporation

Datasheet

1.SP8036DG4.pdf (6 pages)

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FEATURES

The SP8036 represents the next generation in Automatic Power Control (APC) amplifiers designed

specifically for demanding pick-up head applications. With its integrated photo detector, the SP8036 monitors

light intensity of the laser diode in CD-R, CD-RW, DVD+/-R, DVD+/-RW, and DVD-RAM assemblies and

converts this light to an output voltage. The magnitude of this voltage signal corresponds to the laser power

intensity and is subsequently fed back to the laser diode driver to control the laser output power.

The SP8036 on-chip photo detector transforms incident laser light into a proportional current, which is then

converted to a voltage through a transimpedance amplifier. Adjustable gain is provided in the transimpedance

amplifier by means of a gain control loop that is controlled by an external resistor. This external resistor is not

a part of the signal path, which greatly reduces the effects of all parasitic capacitances and inductances on

the flex cable at these pins. The signal is then buffered to provide reactive load drive capability.

The SP8036 achieves an unparalleled level of performance by combining excellent DC stability and low noise

with outstanding AC performance. This level of performance is achieved using a proprietary fully

complimentary BICMOS process with fully integrated, on-board photo detector.

The SP8036 is offered with a nominal sensitivity 4450 V/W and is packaged in a 3.0 x 3.5 mm, 8-lead

OPLGA package. All input logic levels should not be left open at any time.

The SP8036 offers power-down capability with the new active-low chip enable pin, CE. The chip operates

normally when this pin is connected to GND and powers down when connected to Vcc.

Rev 0.8 (09/25/06)

•

Dual wavelength 650nm and 780nm

13 ns Settling Time to 2%

100 MHz Bandwidth at -3dB

10 mV Output Offset Voltage

25 µV/

± 6 dB External Gain Adjust

Small 8-pin OPLGA package

Power-down mode

APC Amplifier with Integrated Photodiode

Solved by

C Output Offset Voltage Drift

and Gain Adjust Capability

SP8036 APC Amplifier

page

Rgain1

Rgain2

Vref

APPLICATIONS

CD-R, and CD-RW

DVD+/-R, DVD+/-RW, and DVD-

RAM

SP8036

OPLGA

8-Pin

GENERAL DESCRIPTION

 2006 Sipex Corporation

Vcc

Gain

Vout

Gnd

SP8036

Related parts for sp8036dg4

sp8036dg4 Summary of contents

Page 1

Solved by TM APC Amplifier with Integrated Photodiode and Gain Adjust Capability FEATURES Dual wavelength 650nm and 780nm • Settling Time to 2% • 100 MHz Bandwidth at -3dB • Output Offset Voltage • ...

Page 2

These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of the specifications below is not implied. Exposure to absolute maximum rating conditions for extended periods ...

Page 3

Unless otherwise noted: 4.5V ≤ Vcc ≤ 5.5V 400ohm, ambient temperature -20 C ≤T Parameter Supply Voltage Supply Current Voltage Reference Range Output Offset Voltage Output Offset Voltage Drift Power Supply Rejection Ratio (PSRR) * Gain Switch Logic ...

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sp8036dg4 Exar Corporation, sp8036dg4 Datasheet

sp8036dg4

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