AD7224KRZ-1 Analog Devices Inc, AD7224KRZ-1 Datasheet

AD7224KRZ-1

Manufacturer Part Number

AD7224KRZ-1

Description

DAC 1-CH R-2R 8-Bit 20-Pin SOIC W

Manufacturer

Analog Devices Inc

Datasheet

1.AD7224KRZ-1.pdf (8 pages)

Specifications of AD7224KRZ-1

Package

20SOIC W

Resolution

8 Bit

Conversion Rate

143 KSPS

Architecture

R-2R

Digital Interface Type

Parallel

Number Of Outputs Per Chip

Output Type

Voltage

Full Scale Error

Â±1.5 LSB

Integral Nonlinearity Error

Â±1 LSB

Maximum Settling Time

20 us

Settling Time

7µs

Number Of Bits

Data Interface

Parallel

Number Of Converters

Voltage Supply Source

Dual ±

Power Dissipation (max)

75mW

Operating Temperature

-40°C ~ 85°C

Mounting Type

Surface Mount

Package / Case

20-SOIC (7.5mm Width)

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

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GENERAL DESCRIPTION

The AD7224 is a precision 8-bit voltage-output, digital-to-

analog converter, with output amplifier and double buffered

interface logic on a monolithic CMOS chip. No external trims

are required to achieve full specified performance for the part.

The double buffered interface logic consists of two 8-bit regis-

ters–an input register and a DAC register. Only the data held in

the DAC registers determines the analog output of the con-

verter. The double buffering allows simultaneous update in a

system containing multiple AD7224s. Both registers may be

made transparent under control of three external lines, CS, WR

and LDAC. With both registers transparent, the RESET line

functions like a zero override; a useful function for system cali-

bration cycles. All logic inputs are TTL and CMOS (5 V) level

compatible and the control logic is speed compatible with most

8-bit microprocessors.

Specified performance is guaranteed for input reference voltages

from +2 V to +12.5 V when using dual supplies. The part is also

specified for single supply operation using a reference of +10 V.

The output amplifier is capable of developing +10 V across a

2 k load.

The AD7224 is fabricated in an all ion-implanted high speed

Linear Compatible CMOS (LC

specifically developed to allow high speed digital logic circuits

and precision analog circuits to be integrated on the same chip.

REV. B

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.

FEATURES

8-Bit CMOS DAC with Output Amplifiers

Operates with Single or Dual Supplies

Low Total Unadjusted Error:

Extended Temperature Range Operation

Standard 18-Pin DIPs, and 20-Terminal Surface

P-Compatible with Double Buffered Inputs

Less Than 1 LSB Over Temperature

Mount Package and SOIC Package

MOS) process which has been

8-Bit DAC with Output Amplifiers

PRODUCT HIGHLIGHTS

1. DAC and Amplifier on CMOS Chip

2. Low Total Unadjusted Error

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

Tel: 617/329-4700

3. Single or Dual Supply Operation

4. Versatile Interface Logic

The single-chip design of the 8-bit DAC and output amplifier

is inherently more reliable than multi-chip designs. CMOS

fabrication means low power consumption (35 mW typical

with single supply).

The fabrication of the AD7224 on Analog Devices Linear

Compatible CMOS (LC

DAC switch-pair arrangement, enables an excellent total un-

adjusted error of less than 1 LSB over the full operating tem-

perature range.

The voltage-mode configuration of the AD7224 allows opera-

tion from a single power supply rail. The part can also be op-

erated with dual supplies giving enhanced performance for

some parameters.

The high speed logic allows direct interfacing to most micro-

processors. Additionally, the double buffered interface en-

ables simultaneous update of the AD7224 in multiple DAC

systems. The part also features a zero override function.

FUNCTIONAL BLOCK DIAGRAM

MOS) process coupled with a novel

AD7224

Fax: 617/326-8703

MOS

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AD7224KRZ-1 Summary of contents

Page 1

FEATURES 8-Bit CMOS DAC with Output Amplifiers Operates with Single or Dual Supplies Low Total Unadjusted Error: Less Than 1 LSB Over Temperature Extended Temperature Range Operation P-Compatible with Double Buffered Inputs Standard 18-Pin DIPs, and 20-Terminal Surface Mount ...

Page 2

AD7224–SPECIFICATIONS ( DUAL SUPPLY All specifications T Parameter STATIC PERFORMANCE Resolution Total Unadjusted Error Relative Accuracy Differential Nonlinearity Full-Scale Error Full-Scale Temperature Coefficient Zero Code Error Zero Code Error Temperature Coefficient REFERENCE ...

Page 3

V DD SINGLE SUPPLY All specifications T Parameter STATIC PERFORMANCE Resolution Total Unadjusted Error Differential Nonlinearity REFERENCE INPUT Input Resistance 3 Input Capacitance DIGITAL INPUTS Input High Voltage, V INH Input Low Voltage, V INL Input Leakage ...

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AD7224KRZ-1 Analog Devices Inc, AD7224KRZ-1 Datasheet

AD7224KRZ-1

Specifications of AD7224KRZ-1

Available stocks

Related parts for AD7224KRZ-1

AD7224KRZ-1 Summary of contents

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