REV. A

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reliable. However, no responsibility is assumed by Analog Devices for its

use, nor for any infringements of patents or other rights of third parties

which may result from its use. No license is granted by implication or

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a

AD8300

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781/329-4700

World Wide Web Site: http://www.analog.com

Fax: 781/326-8703

© Analog Devices, Inc., 1999

FUNCTIONAL BLOCK DIAGRAM

GND

CLR

LD

CS

CLK

SDI

AD8300

12

12

12-BIT

DAC

REF

DAC

REGISTER

EN

SERIAL

REGISTER

+3 Volt, Serial Input

Complete 12-Bit DAC

FEATURES

Complete 12-Bit DAC

No External Components

Single +3 Volt Operation

0.5 mV/Bit with 2.0475 V Full Scale

6

s Output Voltage Settling Time

Low Power: 3.6 mW

Compact SO-8 1.5 mm Height Package

APPLICATIONS

Portable Communications

Digitally Controlled Calibration

Servo Controls

PC Peripherals

GENERAL DESCRIPTION

The AD8300 is a complete 12-bit, voltage-output digital-to-

analog converter designed to operate from a single +3 volt sup-

ply. Built using a CBCMOS process, this monolithic DAC

offers the user low cost, and ease-of-use in single-supply +3 volt

systems. Operation is guaranteed over the supply voltage range

of +2.7 V to +5.5 V making this device ideal for battery oper-

ated applications.

The 2.0475 V full-scale voltage output is laser trimmed to

maintain accuracy over the operating temperature range of the

device. The binary input data format provides an easy-to-use

one-half-millivolt-per-bit software programmability. The voltage

outputs are capable of sourcing 5 mA.

A double buffered serial data interface offers high speed, three-

wire, DSP and microcontroller compatible inputs using data in

(SDI), clock (CLK) and load strobe (

LD) pins. A chip select

(

CS) pin simplifies connection of multiple DAC packages by

enabling the clock input when active low. Additionally, a

CLR

input sets the output to zero scale at power on or upon user

demand.

The AD8300 is specified over the extended industrial (–40

°C to

+85

°C) temperature range. AD8300s are available in plastic

DIP, and low profile 1.5 mm height SO-8 surface mount packages.

3.0

2.8

2.0

0.01

10

0.1

1.0

2.6

2.4

2.2

OUTPUT LOAD CURRENT – mA

PROPER OPERATION

VOLTAGE ABOVE

CURVE

VFS

1 LSB

Figure 1. Minimum Supply Voltage vs. Load

1.00

0.75

–1.00

0

4096

1024

2048

0.50

3072

0.25

0.00

–0.25

–0.50

–0.75

DIGITAL INPUT CODE – Decimal

= –40 C

= +25 C

= +125 C

Figure 2. Linearity Error vs. Digital Code and Temperature