ADN2830-EVALZ データシートの表示（PDF） - Analog Devices

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ADN2830-EVALZ

Continuous Wave Laser Average Power Controller

Analog Devices 

PRELIMINARY TECHNICAL DATA

ADN2830

VCC

VCC

MPD

R2

VCC

LD

R1

-

+

24

VCC2

NC

GND2

IBIAS

GND2

GND2

IBIAS

NC

32

ADN2830

16

NC

NC

GND1

NC

VCC5

VCC1

PAVCAP

PAVCAP

1

8

FAIL

DEGRADE

VCC

100nF

10uF

GND

Place 100nF cap

close to pin 8

* For digital control, replace Rpset with a digital pot from Analog Devices.

ADN2850 10-bit resolution, 50ppm/’C TC, EEPROM

AD5242 8-bit resolution, 50ppm/’C TC

* Total current to laser = IBIAS + IBIAS*R1/R2

* For best accuracy, size R1 to have maximum voltage drop across it within the headroom constraints.

* For 250mA extra IBIAS (450mA total) from AMP1, use AD8591 amplifier.

* For 350mA extra IBIAS (550mA total) from AMP1, use Analog Devices SSM2211 amplifier.

Figure 9. The ADN2830 configured with current multiplier.

REV. PrE May 2002

–7–

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