MP7680

Rev. 3.10

EXAR Corporation, 48720 Kato Road, Fremont, CA 94538 z (510) 668-7000 z (510) 668-7017

E

1998

FEA TURES

· Exar Pioneered Segmented DAC Approach

· Four Double-Buffered 12-bit DACs on a Single Chip

· Independent Reference Inputs

· Lowest Gain Error in a Multiple DAC Chip

· Guaranteed Monotonic

· TTL/5 V CMOS Compatible Inputs

· Industry Standard Digital Interface

· Four Quadrant Multiplication

· Latch-Up Free

5 V CMOS 12-Bit

Quad Double-Buffered Multiplying

Digital-to-Analog Converter

BENEFITS

· Reduced Board Space; Lower System Cost.

· Independent Control of DACs

· Excellent DAC-to-DAC Matching and Tracking

APPLICA TIONS

· Function Generators

· Automatic Test Equipment

· Precision Process Controls

· Recording Studio Control Boards

June 2000-2

GENERAL

DESCRIPTIONS

The MP7680 and the integrate four 12-bit four-quadrant-

multiplying DACs with independent reference inputs and

excellent matching characteristics. The MP7680 grades

offer 1/2, 1 and 2 LSB of relative accuracy. The superior

offers a low 2 LSB of gain error.

Each DAC has double-buffering (an 8 and 4-bit latch and

a 12-bit latch) between the data bus (DB11 - DB0) and the

DAC. The internal 4-bit mux allows the use of 8 or 16-bit

buses. The flexible latch control logic allows to update

one or more DACs simultaneously.

ORDERING

INFORMA TION

Package

Type

Temperature

Range

Part No.

PQFP

PQFP

Plastic Dip

Plastic Dip

-40 to +85°°C

MP7680JE

-40 to +85°°C

MP7680KE

-40 to +85°°C

-40 to +85°°C

MP7680JN

MP7680KN

+2

+4

+1

+2

+2

+4

+1

+2

+16

+16

+16

+16

INL

(LSB)

Gain Error

(LSB)

DNL

(LSB)