FEATURES

• Low voltage 3V to 12V operation

• Low power 1.8mW max @ 3.3V

• Single supply operation (5V or 3.3V)

• Direct CMOS logic interface

• Complementary current outputs

• Nonlinearity to 0.1% max over

temperature range

• High input impedance

• Low full scale current

• High output impedance

GENERAL DESCRIPTION

The ALD1801 is an 8-bit monolithic current output digital to analog

converter designed to provide low power, low operating voltage and simple

operation. It offers industry pin configuration of DAC-08 types, and is

intended for a wide range of digital to analog conversion and control

applications in +5V single power supply and

±5V dual power supply

systems, as well as +3V to +12V battery operated systems.

Device

characteristics are specified for +5V single supply and 3.3V dual supply

systems.

The ALD1801 is manufactured with Advanced Linear Devices’ enhanced

ACMOS silicon gate CMOS process and has been designed to be also

used as a linear cell element in Advanced Linear Devices’ "Function-

Specific" ASIC, as it is fully compatible in design, operation, and manufacture

with all other linear elements in Advanced Linear Devices’ product family.

The ALD1801 is designed with matching between reference and full scale

currents. Digital inputs are standard CMOS logic inputs to provide ease

of interface. Output currents can be directly converted to a voltage output

by using a pair of resistors. When used with ALD’s rail-to-rail output

operational amplifiers such as the ALD1702, full scale output of 0 to +5V

can be easily achieved with single +5V power supply.

8 BIT MICROPOWER MULTIPLYING D/A CONVERTER

ALD1801A/ALD1801B

ALD1801

Operating Temperature Range

-55

°C to +125°C0°C to +70°C0°C to +70°C

16-Pin

16-Pin

16-Pin

CERDIP

Small Outline

Plastic Dip

Package

Package(SOIC)

Package

ALD1801A DC

ALD1801A SC

ALD1801A PC

ALD1801B DC

ALD1801B SC

ALD1801B PC

ALD1801 DC

ALD1801 SC

ALD1801 PC

ORDERING INFORMATION

* Contact factory for industrial temperature range

BLOCK DIAGRAM

VREF+

VREF-

14

3

13

15

V+

IB1

5

B1

MSB

IB2

6

B2

IB3

7

B3

IB4

8

B4

IB5

9

B5

IB7

11

B7

IB6

10

B6

IB8

12

B8

LSB

4

2

IOUT

IOUT

PIN CONFIGURATION

* N/C Pin is connected internally. Do not connect externally.

V-

V+

1

2

3

4

5

6

7

14

13

12

11

10

9

8

15

16

TOP VIEW

DC, PC, SC PACKAGE

I OUT

N/C

N/C

© 1998 Advanced Linear Devices, Inc. 415 Tasman Drive, Sunnyvale, California 94089 -1706 Tel: (408) 747-1155 Fax: (408) 747-1286 http://www.aldinc.com