Rainbow-electronics MAX5191 Manual de usuario descargar pdf

General Description

The MAX5188 is a dual 8-bit, alternate-phase-update,

current-output digital-to-analog converter (DAC)

designed for superior performance in systems requiring

analog signal reconstruction with low distortion and

low-power operation. The MAX5191 provides equal

specifications, with on-chip output resistors for voltage-

output operation. Both devices are designed for 10pVs

glitch operation to reduce distortion and minimize

unwanted spurious signal components at the output. An

on-board +1.2V bandgap circuit provides a well-regu-

lated, low-noise reference that may be disabled for

external reference operation.

The MAX5188/MAX5191 are designed to provide a high

level of signal integrity for the least amount of power

dissipation. Both DACs operate from a +2.7V to +3.3V

single supply. Additionally, these DACs have three

modes of operation: normal, low-power standby, and

full shutdown. A full shutdown provides the lowest pos-

sible power dissipation with a maximum shutdown cur-

rent of 1µA. A fast wake-up time (0.5µs) from standby

mode to full DAC operation allows for power conserva-

tion by activating the DACs only when required.

The MAX5188/MAX5191 are available in a 28-pin QSOP

package and are specified for the extended (-40°C to

+85°C) temperature range. For pin-compatible 10-bit

versions, refer to the MAX5182/MAX5185 data sheet.

Applications

Signal Reconstruction Applications

Digital Signal Processing

Arbitrary Waveform Generators

Imaging Applications

Features

♦ +2.7V to +3.3V Single-Supply Operation

♦ Wide Spurious-Free Dynamic Range: 70dB

at f

OUT

= 2.2MHz

♦ Fully Differential Outputs for Each DAC

♦ ±0.5% FSR Gain Mismatch Between DAC Outputs

♦ Low-Current Standby or Full Shutdown Modes

♦ Internal +1.2V Low-Noise Bandgap Reference

♦ Small 28-Pin QSOP Package

MAX5188/MAX5191

Dual, 8-Bit, 40MHz, Current/Voltage,

Alternate-Phase Output DACs

________________________________________________________________ Maxim Integrated Products 1

CREF2

OUT2P

OUT2N

REFO

REFR

DGND

N.C.

CLK

DACEN

AGND

OUT1N

OUT1P

CREF1

QSOP

TOP VIEW

MAX5188

MAX5191

REN

19-1580; Rev 2; 12/01

Pin Configuration

Ordering Information

PART

MAX5188BEEI

MAX5191BEEI

TEMP. RANGE

-40°C to +85°C

PIN-PACKAGE

28 QSOP

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.

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Indice de contenidos

Pagina 1 - Alternate-Phase Output DACs

General DescriptionThe MAX5188 is a dual 8-bit, alternate-phase-update,current-output digital-to-analog converter (DAC)designed for superior performan

Pagina 2

MAX5188/MAX5191Dual, 8-Bit, 40MHz, Current/Voltage,Alternate-Phase Output DACs10 _____________________________________________________________________

Pagina 3