AD7224

更新时间： 2024-01-18 10:28:02

品牌	Logo	应用领域
亚德诺 - ADI		放大器
页数	文件大小	规格书
8页	231K
描述
LC2MOS 8-Bit DAC with Output Amplifiers

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AD7224 技术参数

是否无铅：	含铅	是否Rohs认证：	不符合
生命周期：	Obsolete	零件包装代码：	DIP
包装说明：	CERDIP-18	针数：	18
Reach Compliance Code：	not_compliant	ECCN代码：	3A001.A.2.C
HTS代码：	8542.39.00.01	风险等级：	5.18
Is Samacsys：	N	转换器类型：	D/A CONVERTER
输入位码：	BINARY	输入格式：	PARALLEL, 8 BITS
JESD-30 代码：	R-GDIP-T18	JESD-609代码：	e0
最大线性误差 (EL)：	0.195%	标称负供电电压：	-5 V
位数：	8	功能数量：	1
端子数量：	18	最高工作温度：	125 °C
最低工作温度：	-55 °C	封装主体材料：	CERAMIC, GLASS-SEALED
封装代码：	DIP	封装等效代码：	DIP18,.3
封装形状：	RECTANGULAR	封装形式：	IN-LINE
峰值回流温度（摄氏度）：	NOT SPECIFIED	电源：	12/15, GND/-5 V
认证状态：	Not Qualified	座面最大高度：	5.08 mm
最大稳定时间：	20 µs	子类别：	Other Converters
最大压摆率：	6 mA	标称供电电压：	15 V
表面贴装：	NO	技术：	BICMOS
温度等级：	MILITARY	端子面层：	Tin/Lead (Sn/Pb)
端子形式：	THROUGH-HOLE	端子节距：	2.54 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	7.62 mm	Base Number Matches：	1

AD7224 数据手册

LC MOS

8-Bit DAC with Output Amplifiers

AD7224

FEATURES

FUNCTIO NAL BLO CK D IAGRAM

8-Bit CMOS DAC w ith Output Am plifiers

Operates w ith Single or Dual Supplies

Low Total Unadjusted Error:

Less Than 1 LSB Over Tem perature

Extended Tem perature Range Operation

␮P-Com patible w ith Double Buffered Inputs

Standard 18-Pin DIPs, and 20-Term inal Surface

Mount Package and SOIC Package

GENERAL D ESCRIP TIO N

P RO D UCT H IGH LIGH TS

T he 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.

1. DAC and Amplifier on CMOS Chip

T he 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).

T he 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. T he 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 T T L and CMOS (5 V) level

compatible and the control logic is speed compatible with most

8-bit microprocessors.

2. Low T otal Unadjusted Error

T he fabrication of the AD7224 on Analog Devices Linear

Compatible CMOS (LC²MOS) process coupled with a novel

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

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

perature range.

3. Single or Dual Supply Operation

T he voltage-mode configuration of the AD7224 allows opera-

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

erated with dual supplies giving enhanced performance for

some parameters.

Specified performance is guaranteed for input reference voltages

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

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

T he output amplifier is capable of developing +10 V across a

2 kΩ load.

4. Versatile Interface Logic

T he 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. T he part also features a zero override function.

T he AD7224 is fabricated in an all ion-implanted high speed

Linear Compatible CMOS (LC²MOS) process which has been

specifically developed to allow high speed digital logic circuits

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

REV. B

Inform ation furnished by Analog Devices is believed to be accurate and

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

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

which m ay result from its use. No license is granted by im plication or

otherwise under any patent or patent rights of Analog Devices.

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

Tel: 617/ 329-4700

Fax: 617/ 326-8703

12 3 4 5 6 7 8

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