MAX5547 Maxim Integrated Products, MAX5547 Datasheet

MAX5547

Manufacturer Part Number

MAX5547

Description

Current-Sink Output DAC

Manufacturer

Maxim Integrated Products

Datasheet

1.MAX5547.pdf (12 pages)

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The MAX5547 dual, 10-bit, dual range, digital-to-analog

converter (DAC) sinks up to 3.6mA of current, making it

ideal for laser-driver-control applications. Parallel the

MAX5547 outputs to sink higher current (up to 7.2mA

max). Operating from a single +2.7V to +5.25V

supply, the MAX5547 typically consumes 1mA

(internal reference).

The MAX5547 operates from a precision +2.5V internal

4ppm/°C reference or an external reference in the

+2.45V to +2.55V range. The maximum full-scale cur-

rent-sink range is software programmable to 3.6mA or

1.2mA for each DAC. A 10MHz SPI™-compatible serial

interface configures the device.

The MAX5547 is available in a 3mm x 3mm x 0.8mm 8-

pin TDFN package and is specified over the -40°C to

+85°C extended temperature range.

19-3988; Rev 0; 2/06

SPI is a trademark of Motorola, Inc.

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

Laser-Driver Control

Pin-Diode Bias Currents

Modulation Currents

Average Power

Extinction Ratios

TX_DISABLE

MOD-DEF1

MOD-DEF2

________________________________________________________________ Maxim Integrated Products

GND

REF

General Description

Dual, 10-Bit, Current-Sink Output DAC

+2.5V

REF

MOSI

DIN

MICROCONTROLLER WITH ADC

I/O1

MAX5547

SCLK

Applications

+2.7V TO +5.25V

I/O2

I/O3

GND

OUTB

OUTA

+3.3V

AIN0

AIN1

AIN2

MODSET

BIASSET

GND

+3.3V

♦ Dual Current-Sink DACs

♦ 10-Bit Resolution

♦ Two Software-Programmable Full-Scale Current

♦ Parallelable Outputs for Up to 7.2mA (max)

♦ +2.5V Internal Reference Drifts Only 4ppm/°C

♦ +2.7V to +5.25V Single-Supply Operation

♦ INL: ±4 LSB (1.2mA Output)

♦ DNL: ±0.75 LSB (Guaranteed Monotonic)

♦ Low +0.8V Output Compliance

♦ Ultra-Small, 3mm x 3mm x 0.8mm, 8-Pin TDFN

*EP = Exposed pad.

Pin Configuration appears at end of data sheet.

MAX5547ETA -40°C to +85°C 8 TDFN-EP*

+3.3V

Ranges: 3.6mA or 1.2mA

Package

MAX3736

DIS

PART

BC_MON

OUT-

OUT+

BIAS

TEMP RANGE

Typical Operating Circuit

FERRITE

Ordering Information

BEAD

+3.3V

PIN-

PACKAGE

Features

MARK

TOP

APF

T833-2

CODE

PKG

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