MP7626 查看數據表（PDF） - Exar Corporation

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MP7626

Microprocessor Compatible Buffered Multiplying 16-Bit Digital-to-Analog Converter

Exar Corporation 

FEATURES

• Four Quadrant Multiplication

• 16-Bit Monotonicity

• Low Power Consumption

• TTL/5 V CMOS Compatible

• Single-Buffered or Transparent Data inputs

• Decoded DAC Approach

• Latch-Up Free

• 8-Bit Bus Version: MP7636A

MP7626

Microprocessor Compatible

Buffered Multiplying 16-Bit

Digital-to-Analog Converter

APPLICATIONS

• Digitally Programmable References

• Programmable Audio Attenuator

• High Accuracy Process Control Systems

• Automatic Test Equipment

• Easy Interface to 8 and 16-Bit

Microprocessor Buses

GENERAL DESCRIPTION

The MP7626 is a CMOS 16-bit Digital-to-Analog Converter

(DAC) that is manufactured using advanced thin film resistors

on a double metal CMOS process. It incorporates a unique bit

decoding technique yielding lower glitch, higher speed and

excellent accuracy over temperature and time. 16 bit differential

non-linearity is achieved with minimal trimming.

Two 8-bit latches (MSB latch and LSB latch) hold the 16-bit

data which are converted by the DAC. A 16-bit bus can load

both latches in one cycle. An 8-bit bus loads one latch at a time.

By making the latches transparent (MSB latch = LSB latch =

High) the DAC will continuously convert the BIT1 - BIT16 inputs.

SIMPLIFIED BLOCK AND TIMING DIAGRAM

DB15-DB8

MSB Latch

DB7-DB0

LSB Latch

VREF

VDD

DQ

Latch 8

E

DQ

Latch 8

E

16

16

16-Bit

Multiplying

DAC

RFB

IOUT1

IOUT2

DATA

LATCH

OUTPUT

GND

Rev. 2.00

1

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