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AD7875KN

更新时间： 2024-02-14 17:39:34
品牌 Logo 应用领域
罗彻斯特 - ROCHESTER PC光电二极管转换器
页数 文件大小 规格书
29页 1620K
描述
1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL/PARALLEL ACCESS, PDIP24, 0.300 INCH, PLASTIC, MS-001, DIP-24

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AD7875KN 技术参数

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,针数：24
Reach Compliance Code：unknown风险等级：5.67
Is Samacsys：N最大模拟输入电压：5 V
最小模拟输入电压：最长转换时间：9 µs
转换器类型：ADC, SUCCESSIVE APPROXIMATIONJESD-30 代码：R-PDIP-T24
JESD-609代码：e0长度：31.75 mm
最大线性误差 (EL)：0.0244%湿度敏感等级：NOT APPLICABLE
标称负供电电压：-5 V模拟输入通道数量：1
位数：12功能数量：1
端子数量：24最高工作温度：70 °C
最低工作温度：输出位码：BINARY, 2'S COMPLEMENT BINARY
输出格式：SERIAL, PARALLEL, 8 BITS, PARALLEL, WORD封装主体材料：PLASTIC/EPOXY
封装代码：DIP封装形状：RECTANGULAR
封装形式：IN-LINE峰值回流温度（摄氏度）：NOT APPLICABLE
采样并保持/跟踪并保持：TRACK座面最大高度：5.33 mm
标称供电电压：5 V表面贴装：NO
技术：CMOS温度等级：COMMERCIAL
端子面层：TIN LEAD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

AD7875KN 数据手册

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LC2MOS Complete,  
12-Bit, 100 kHz, Sampling ADCs  
AD7870/AD7875/AD7876  
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
V
V
DD  
AGND  
REF OUT  
IN  
Complete monolithic 12-bit ADCs with  
2 μs track-and-hold amplifier  
8 μs ADC  
AD7870/AD7875/  
AD7876  
INPUT  
On-chip reference  
SCALING  
Laser-trimmed clock  
TRACK-AND-HOLD  
COMP  
Parallel, byte, and serial digital interface  
72 dB SNR at 10 kHz input frequency  
(AD7870, AD7875)  
3V  
12-BIT  
DAC  
REFERENCE  
57 ns data access time  
Low power: −60 mW typical  
Variety of input ranges  
3 V for AD7870  
CLOCK  
CLK  
SAR +  
COUNTER  
0 V to +5 V for AD7875  
10 V for AD7876  
12/8/CLK  
CONVST  
CONTROL LOGIC  
PARALLEL  
AND SERIAL  
INTERFACE  
CS RD BUSY/INT DB11  
DB0  
DGND  
V
SS  
Figure 1.  
GENERAL DESCRIPTION  
The AD7870/AD7875/AD7876 are fast, complete, 12-bit  
analog-to-digital converters (ADCs). These converters consist  
of a track-and-hold amplifier, an 8 μs successive approximation  
ADC, a 3 V buried Zener reference, and versatile interface logic.  
The ADCs feature a self-contained internal clock which is laser  
trimmed to guarantee accurate control of conversion time. No  
external clock timing components are required; the on-chip  
clock may be overridden by an external clock if required.  
The parts are available in a 24-pin, 0.3 inch-wide, plastic or  
hermetic dual-in-line package (DIP). The AD7870 and AD7875  
are available in a 28-pin plastic leaded chip carrier (PLCC),  
while the AD7876 is available and in a 24-pin small outline  
(SOIC) package.  
PRODUCT HIGHLIGHTS  
1. Complete 12-bit ADC on a chip.  
The AD7870/AD7875/AD7876 provide all the functions  
necessary for analog-to-digital conversion and combine a  
12-bit ADC with internal clock, track-and-hold amplifier  
and reference on a single chip.  
The parts offer a choice of three data output formats: a single,  
parallel, 12-bit word; two 8-bit bytes or serial data. Fast bus  
access times and standard control inputs ensure easy interfacing  
to modern microprocessors and digital signal processors.  
2. Dynamic specifications for DSP users.  
All parts operate from 5 V power supplies. The AD7870 and  
AD7876 accept input signal ranges of 3 V and 10 V, respec-  
tively, while the AD7875 accepts a unipolar 0 V to +5 V input  
range. The parts can convert full power signals up to 50 kHz.  
The AD7870 and AD7875 are fully specified and tested for  
ac parameters, including signal-to-noise ratio, harmonic  
distortion and intermodulation distortion.  
3. Fast microprocessor interface.  
The AD7870/AD7875/AD7876 feature dc accuracy specifica-  
tions, such as linearity, full-scale and offset error. In addition,  
the AD7870 and AD7875 are fully specified for dynamic  
performance parameters including distortion and signal-to-  
noise ratio.  
Data access times of 57 ns make the parts compatible with  
modern 8-bit and 16-bit microprocessors and digital signal  
processors. Key digital timing parameters are tested and  
guaranteed over the full operating temperature range.  
Rev. C  
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 that may result from its use. Specifications subject to change without notice. No  
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.  
Trademarks and registeredtrademarks arethe property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700  
www.analog.com  
Fax: 781.461.3113 ©1997–2009 Analog Devices, Inc. All rights reserved.  
 
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