MP7628AD EXAR [Exar Corporation], MP7628AD Datasheet

MP7628AD

Manufacturer Part Number

MP7628AD

Description

5 V CMOS Quad Multiplying 8-Bit Digital-to-Analog Converter

Manufacturer

EXAR [Exar Corporation]

Datasheet

1.MP7628AD.pdf (12 pages)

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FEATURES

GENERAL DESCRIPTION

signed using a decoded DAC architecture featuring excellent

DAC-to-DAC matching and guaranteed monotonicity.

easy microprocessor interface.

latches, eliminating the need for storing information in RAM. In

the event the microprocessor power supply is interrupted, it can

poll the DACs to establish the last known system state.

DATA BUS

SIMPLIFIED BLOCK DIAGRAM

(LSB)

(MSB)

DB0

DB7

Readback Capability for all DACs

On-Chip Latches for All DACs

Linearity Grades to +1/8 LSB

Single Supply Voltage (5 Volt)

DACs Matched to 1%

Four Quadrant Multiplication

Microprocessor TTL/CMOS Compatible

Latch-Up Free

Dual Version: MP7529B

The MP7628 is a quad 8-bit Digital-to-Analog Converter de-

Separate on-chip latches are provided for each DAC to allow

The readback function allows the user to poll or read the data

R/W

DS1

DS2

Rev. 2.00

A/B

DIRECTIONAL

CONTROL

DRIVER

LOGIC

LINE

BI-

GND

APPLICATIONS

common 8-bit TTL/CMOS compatible input port. Control inputs

DS1, DS2 and A/B determine which DAC is to be loaded. The

MP7628’s load cycle is similar to the write cycle of a random ac-

cess memory and the device is bus compatible with most 8-bit

microprocessors.

less than 5mW.

teristics with a separate reference input and feedback resistor

for each DAC.

Microprocessor Controlled Gain and Attenuation

Circuits

Microprocessor Controlled/Programmable

Power Supplies

Hardware Redundant Applications Requiring

Data Readback

THREE-STATE

Data is transferred into any of the four DAC data latches via

The device operates at +5 V power supply and dissipates

All DACs offer excellent four quadrant multiplication charac-

LATCH A

BUFFER

LATCH B

BUFFER

LATCH C

BUFFER

LATCH D

BUFFER

Digital-to-Analog Converter

REFB

REFC

Quad Multiplying 8-Bit

REFD

REFA

DAC C

DAC D

DAC A

DAC B

MP7628

5 V CMOS

OUT1A

OUT2A

OUT2B

OUT1B

OUT1C

OUT2C

OUT2D

OUT1D

FBA

FBB

FBC

FBD

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