MP7628BD

更新时间： 2024-11-20 22:03:47

品牌	Logo	应用领域
艾科嘉 - EXAR		转换器
页数	文件大小	规格书
12页	127K
描述
5 V CMOS Quad Multiplying 8-Bit Digital-to-Analog Converter

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中文翻译

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MP7628BD 数据手册

MP7628

5 V CMOS

Quad Multiplying 8-Bit

Digital-to-Analog Converter

FEATURES

APPLICATIONS

• 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

• Microprocessor Controlled Gain and Attenuation

Circuits

• Microprocessor Controlled/Programmable

Power Supplies

• Hardware Redundant Applications Requiring

Data Readback

• Dual Version: MP7529B

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

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.

GENERAL DESCRIPTION

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

signed using a decoded DAC architecture featuring excellent

DAC-to-DAC matching and guaranteed monotonicity.

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

easy microprocessor interface.

The device operates at +5 V power supply and dissipates

less than 5mW.

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

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.

All DACs offer excellent four quadrant multiplication charac-

teristics with a separate reference input and feedback resistor

for each DAC.

SIMPLIFIED BLOCK DIAGRAM

REFB

REFA

FBA

LATCH A

DAC A

OUT1A

THREE-STATE

BUFFER

DB0

OUT2A

OUT2B

BI-

DIRECTIONAL

LINE

(LSB)

DATA BUS

DB7

(MSB)

LATCH B

DRIVER

DAC B

DAC C

OUT1B

THREE-STATE

BUFFER

FBB

FBC

LATCH C

OUT1C

THREE-STATE

BUFFER

A/B

OUT2C

OUT2D

CONTROL

LOGIC

R/W

LATCH D

DAC D

DS1

DS2

OUT1D

THREE-STATE

BUFFER

FBD

GND

REFC

REFD

Rev. 2.00

12 3 4 5 6 7...12

中文翻译

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