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AD7845

更新时间： 2024-01-23 16:45:23
品牌 Logo 应用领域
亚德诺 - ADI /
页数 文件大小 规格书
12页 196K
描述
LC2MOS Complete 12-Bit Multiplying DAC

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AD7845 技术参数

Source Url Status Check Date：2013-05-01 14:56:21.065是否无铅： 含铅
是否Rohs认证： 不符合生命周期：Active
零件包装代码：DIP包装说明：DIP, DIP24,.3
针数：24Reach Compliance Code：not_compliant
ECCN代码：3A001.A.2.CHTS代码：8542.39.00.01
风险等级：5.13Is Samacsys：N
最大模拟输出电压：10 V最小模拟输出电压：-10 V
转换器类型：D/A CONVERTER输入位码：BINARY
输入格式：PARALLEL, WORDJESD-30 代码：R-GDIP-T24
JESD-609代码：e0最大线性误差 (EL)：0.0244%
标称负供电电压：-12 V位数：12
功能数量：1端子数量：24
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：DIP24,.3封装形状：RECTANGULAR
封装形式：IN-LINE峰值回流温度（摄氏度）：NOT APPLICABLE
电源：+-15 V认证状态：Not Qualified
座面最大高度：5.08 mm最大稳定时间：5 µs
子类别：Other Converters最大压摆率：10 mA
标称供电电压：12 V表面贴装：NO
技术：CMOS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 APPLICABLE宽度：7.62 mm
Base Number Matches：1

AD7845 数据手册

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LC2MOS  
a
Complete 12-Bit Multiplying DAC  
AD7845  
FUNCTIONAL BLOCK DIAGRAM  
FEATURES  
12-Bit CMOS MDAC with Output Amplifier  
4-Quadrant Multiplication  
Guaranteed Monotonic (TMIN to TMAX  
)
Space-Saving 0.3" DIPs and 24- or 28-Terminal Surface  
Mount Packages  
Application Resistors On Chip for Gain Ranging, etc.  
Low Power LC2MOS  
APPLICATIONS  
Automatic Test Equipment  
Digital Attenuators  
Programmable Power Supplies  
Programmable Gain Amplifiers  
Digital-to-4–20 mA Converters  
GENERAL DESCRIPTION  
PRODUCT HIGHLIGHTS  
The AD7845 is the industry’s first 4-quadrant multiplying D/A  
converter with an on-chip amplifier. It is fabricated on the  
LC2MOS process, which allows precision linear components  
and digital circuitry to be implemented on the same chip.  
1. Voltage Output Multiplying DAC  
The AD7845 is the first DAC which has a full 4-quadrant  
multiplying capability and an output amplifier on chip. All  
specifications include amplifier performance.  
The 12 data inputs drive latches which are controlled by stan-  
dard CS and WR signals, making microprocessor interfacing  
simple. For stand-alone operation, the CS and WR inputs can  
be tied to ground, making all latches transparent. All digital  
inputs are TTL and 5 V CMOS compatible.  
2. Matched Application Resistors  
Three application resistors provide an easy facility for gain  
ranging, voltage offsetting, etc.  
3. Space Saving  
The AD7845 saves space in two ways. The integration of the  
output amplifier on chip means that chip count is reduced.  
The part is housed in skinny 24-lead 0.3" DIP, 28-terminal  
LCC and PLCC and 24-terminal SOIC packages.  
The output amplifier can supply ±10 V into a 2 kΩ load. It is  
internally compensated, and its input offset voltage is low due to  
laser trimming at wafer level. For normal operation, RFB is tied  
to VOUT, but the user may alternatively choose RA, RB or RC to  
scale the output voltage range.  
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.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781/329-4700  
Fax: 781/326-8703  
World Wide Web Site: http://www.analog.com  
© Analog Devices, Inc., 1999  
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