欢迎访问ic37.com |
会员登录 免费注册
发布采购

AD7226KN 参数 Datasheet PDF下载

AD7226KN图片预览
型号: AD7226KN
PDF下载: 下载PDF文件 查看货源
内容描述: LC2MOS四通道8位D / A转换器 [LC2MOS Quad 8-Bit D/A Converter]
分类和应用: 转换器
文件页数/大小: 12 页 / 249 K
品牌: AD [ ANALOG DEVICES ]
 浏览型号AD7226KN的Datasheet PDF文件第2页浏览型号AD7226KN的Datasheet PDF文件第3页浏览型号AD7226KN的Datasheet PDF文件第4页浏览型号AD7226KN的Datasheet PDF文件第5页浏览型号AD7226KN的Datasheet PDF文件第6页浏览型号AD7226KN的Datasheet PDF文件第7页浏览型号AD7226KN的Datasheet PDF文件第8页浏览型号AD7226KN的Datasheet PDF文件第9页  
a
FEATURES
Four 8-Bit DACs with Output Amplifiers
Skinny 20-Pin DIP, SOIC and 20-Terminal
Surface Mount Packages
Microprocessor Compatible
TTL/CMOS Compatible
No User Trims
Extended Temperature Range Operation
Single Supply Operation Possible
APPLICATIONS
Process Control
Automatic Test Equipment
Automatic Calibration of Large System Parameters,
e.g., Gain/Offset
LC MOS
Quad 8-Bit D/A Converter
AD7226
FUNCTIONAL BLOCK DIAGRAM
2
GENERAL DESCRIPTION
PRODUCT HIGHLIGHTS
The AD7226 contains four 8-bit voltage-output digital-to-
analog converters, with output buffer amplifiers and interface
logic on a single monolithic chip. No external trims are required
to achieve full specified performance for the part.
Separate on-chip latches are provided for each of the four D/A
converters. Data is transferred into one of these data latches
through a common 8-bit TTL/CMOS (5 V) compatible input
port. Control inputs A0 and A1 determine which DAC is loaded
when
WR
goes low. The control logic is speed-compatible with
most 8-bit microprocessors.
Each D/A converter includes an output buffer amplifier capable
of driving up to 5 mA of output current. The amplifiers’ offsets
are laser-trimmed during manufacture, thereby eliminating any
requirement for offset nulling.
Specified performance is guaranteed for input reference voltages
from +2 V to +12.5 V with dual supplies. The part is also speci-
fied for single supply operation at a reference of +10 V.
The AD7226 is fabricated in an all ion-implanted high speed
Linear Compatible CMOS (LC
2
MOS) process which has been
specifically developed to allow high speed digital logic circuits
and precision analog circuits to be integrated on the same chip.
1. DAC-to-DAC Matching
Since all four DACs are fabricated on the same chip at the
same time, precise matching and tracking between the DACs
is inherent.
2. Single Supply Operation
The voltage mode configuration of the DACs allows the
AD7226 to be operated from a single power supply rail.
3. Microprocessor Compatibility
The AD7226 has a common 8-bit data bus with individual
DAC latches, providing a versatile control architecture for
simple interface to microprocessors. All latch enable signals
are level triggered.
4. Small Size
Combining four DACs and four op amps plus interface logic
into a 20-pin DIP or SOIC or a 20-terminal surface mount
package allows a dramatic reduction in board space require-
ments and offers increased reliability in systems using mul-
tiple converters. Its pinout is aimed at optimizing board
layout with all the analog inputs and outputs at one end of the
package and all the digital inputs at the other.
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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
Fax: 617/326-8703