MP7542BD

更新时间： 2024-11-10 22:36:39

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	111K
描述
5 V CMOS 4-Bit Input, 12-Bit Digital-to-Analog Converter

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MP7542BD 数据手册

MP7542

5 V CMOS

4-Bit Input, 12-Bit

Digital-to-Analog Converter

FEATURES

• 12-Bit DAC with a 4-Bit Parallel Address for 4 & 8-Bit

Microprocessor or Microcontroller Interface

• Nonlinearity +1/2 LSB Tmin to Tmax

• Latch-Up Free

• +5 V Supply Operation

• Low Power Consumption: 40mW Max.

• Low Cost

• Serial Version: MP7543

• Low Sensitivity to Output Amplifier V

• Low Output Capacitance

cycle of a static RAM. A CLEAR input allows the 12-bit DAC reg-

ister to be reset to all zeros.

GENERAL DESCRIPTION

The MP7542 is a precision, 12-bit CMOS 4-quadrant multi-

plying Digital-to-Analog Converter designed for direct interface

to 4 and 8-bit microprocessors.

The MP7542 is manufactured using advanced thin-film on

monolithic double metal CMOS fabrication process. A unique

decoding technique is utilized yielding excellent accuracy and

stability.

The MP7542 consists of three 4-bit registers, a 12-bit DAC

DAC. Data is loaded into the data registers in three 4-bit nibbles

andsubsequentlytransferredtothe12-bitDACregister. Alldata

loading or data transfer operations are identical to the WRITE

The MP7542 reduces the additional linearity errors due to

output amplifier offset to only 330µV per millivolt of offset versus

670 µV for the standard R-2R ladder CMOS DACs.

SIMPLIFIED BLOCK DIAGRAM

REF

OUT1

12-Bit Multiplying DAC

12-Bit DAC Register

OUT2

AGND

CLR

DGND

H-Byte

Data

M-Byte

Data

L-Byte

Data

Address

Decode

Logic

DB0 (LSB)

DB1

DB2

DB3 (MSB)

Rev. 2.00

12 3 4 5 6 7...12

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