AD8522JRU-REEL Analog Devices Inc, AD8522JRU-REEL Datasheet

AD8522JRU-REEL

Manufacturer Part Number

AD8522JRU-REEL

Description

IC DAC DUAL 12BIT 5V 14-TSSOP

Manufacturer

Analog Devices Inc

Datasheet

1.AD8522ARZ.pdf (8 pages)

Specifications of AD8522JRU-REEL

Rohs Status

RoHS non-compliant

Settling Time

16µs

Number Of Bits

Data Interface

Serial

Number Of Converters

Voltage Supply Source

Single Supply

Power Dissipation (max)

25mW

Operating Temperature

-40°C ~ 85°C

Mounting Type

Surface Mount

Package / Case

14-TSSOP

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GENERAL DESCRIPTION

The AD8522 is a complete dual 12-bit, single-supply, voltage

output DAC in a 14-pin DIP, or SO-14 surface mount package.

Fabricated in a CBCMOS process, features include a serial digi-

tal interface, onboard reference, and buffered voltage output.

Ideal for +5 V-only systems, this monolithic device offers low

cost and ease of use, and requires no external components to

realize the full performance of the device.

The serial digital interface allows interfacing directly to numer-

ous microcontroller ports, with a simple high speed, three-wire

data, clock, and load strobe format. The 16-bit serial word con-

tains the 12-bit data word and DAC select address, which is de-

coded internally or can be decoded externally using LDA, LDB

REV. A

Information furnished by Analog Devices is believed to be accurate and

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

otherwise under any patent or patent rights of Analog Devices.

Figure 1. Linearity Error vs. Digital Code & Temperature

FEATURES

Complete Dual 12-Bit DAC

No External Components

+5 V Single-Supply Operation

4.095 V Full Scale (1 mV/LSB)

Buffered Voltage Outputs

Low Power: 5 mW/DAC

Space Saving 1.5 mm Height SO-14 Package

APPLICATIONS

Digitally Controlled Calibration

Servo Controls

Process Control Equipment

Computer Peripherals

Portable Instrumentation

Cellular Base Stations Voltage Adjustment

–0.2

–0.4

–0.6

–0.8

–1.0

0.6

0.4

0.2

DIGITAL INPUT CODE – Decimal

1024

= –55 C, +25 C, +85 C, +125 C

+125 C

= +4.5V

+85 C

2048

–55 C

10%

+25 C

3072

4096

inputs. A serial data output allows the user to easily daisy-chain

multiple devices in conjunction with a chip select input. A reset

RS input sets the outputs to zero scale or midscale, as deter-

mined by the input MSB.

The output 4.095 V full scale is laser trimmed to maintain accu-

racy over the operating temperature range of the device, and

gives the user an easy-to-use one-millivolt-per-bit resolution. A

2.5 V reference output is also available externally for other data

acquisition circuitry, and for ratiometric applications. The out-

put buffers are capable of driving 5 mA.

The AD8522 is available in the 14-pin plastic DIP and low pro-

file 1.5 mm SOIC-14 packages.

PACKAGE TYPES AVAILABLE

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

Tel: 617/329-4700

(DATA)

SDO

LDA

LDB

CLK

SDI

CONTROL

LATCH

SHIFT

LOGIC

CLK

FUNCTIONAL BLOCK DIAGRAM

SO-14

DGND

+5 Volt, Serial Input,

DAC B

DAC A

MSB RS

Dual 12-Bit DAC

REFERENCE

BANDGAP

AD8522

DAC B

DAC A

AGND

AD8522

PDIP-14

REF

BUF

REF

BUF

AMP

Fax: 617/326-8703

OUTA

REF

OUTB

Related parts for AD8522JRU-REEL

AD8522JRU-REEL Summary of contents

Page 1

FEATURES Complete Dual 12-Bit DAC No External Components +5 V Single-Supply Operation 4.095 V Full Scale (1 mV/LSB) Buffered Voltage Outputs Low Power: 5 mW/DAC Space Saving 1.5 mm Height SO-14 Package APPLICATIONS Digitally Controlled Calibration Servo Controls Process ...

Page 2

AD8522–SPECIFICATIONS ELECTRICAL CHARACTERISTICS Parameter STATIC PERFORMANCE 1 Resolution Relative Accuracy Differential Nonlinearity Zero-Scale Error 2 Full-Scale Voltage 2, 3 Full-Scale Tempco MATCHING PERFORMANCE Linearity Matching Error ANALOG OUTPUT Output Current Load Regulation at Half-Scale 3 Capacitive Load REFERENCE OUTPUT Output ...

Page 3

SDI Sf/Hd CLK CS t LD1 LD SDO SDI CLK OUT ZS Last DB0 DB1 DB2 DB3 DB4 Data Word Sf/ Hardware Load ...

Page 4

AD8522 Pin Function SDI Serial Data Input, input data loads directly into the shift register. CLK Clock input, positive edge clocks data into shift register. CS Chip Select, active low input. Prevents shift register loading when high. Does not affect ...

Page 5

OPERATION The AD8522 is a complete ready-to-use dual 12-bit digital-to- analog converter. Only one +5 V power supply is necessary for operation. It contains two voltage-switched, 12-bit, laser- trimmed digital-to-analog converters, a curvature-corrected bandgap reference, rail-to-rail output op amps, input ...

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AD8522JRU-REEL Analog Devices Inc, AD8522JRU-REEL Datasheet

AD8522JRU-REEL

Specifications of AD8522JRU-REEL

Related parts for AD8522JRU-REEL

AD8522JRU-REEL Summary of contents

Page 1

Page 2

Page 3

Page 4

Page 5

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Page 8

Related keywords