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AD7874AR

更新时间： 2024-01-04 22:14:50
品牌 Logo 应用领域
罗彻斯特 - ROCHESTER 信息通信管理光电二极管转换器
页数 文件大小 规格书
17页 1097K
描述
4-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO28, SOIC-28

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AD7874AR 技术参数

Source Url Status Check Date：2013-05-01 14:56:21.347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：SOIC包装说明：SOP, SOP28,.4
针数：28Reach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：7.94最大模拟输入电压：10 V
最小模拟输入电压：-10 V最长转换时间：35 µs
转换器类型：ADC, SUCCESSIVE APPROXIMATIONJESD-30 代码：R-PDSO-G28
JESD-609代码：e0长度：17.9 mm
最大线性误差 (EL)：0.024%湿度敏感等级：3
标称负供电电压：-5 V模拟输入通道数量：4
位数：12功能数量：1
端子数量：28最高工作温度：85 °C
最低工作温度：-40 °C输出位码：2'S COMPLEMENT BINARY
输出格式：PARALLEL, WORD封装主体材料：PLASTIC/EPOXY
封装代码：SOP封装等效代码：SOP28,.4
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
峰值回流温度（摄氏度）：240电源：+-5 V
认证状态：Not Qualified采样速率：0.029 MHz
采样并保持/跟踪并保持：TRACK座面最大高度：2.65 mm
子类别：Analog to Digital Converters最大压摆率：18 mA
标称供电电压：5 V表面贴装：YES
技术：BICMOS温度等级：INDUSTRIAL
端子面层：Tin/Lead (Sn85Pb15)端子形式：GULL WING
端子节距：1.27 mm端子位置：DUAL
处于峰值回流温度下的最长时间：30宽度：7.5 mm
Base Number Matches：1

AD7874AR 数据手册

 浏览型号AD7874AR的Datasheet PDF文件第1页浏览型号AD7874AR的Datasheet PDF文件第2页浏览型号AD7874AR的Datasheet PDF文件第3页浏览型号AD7874AR的Datasheet PDF文件第5页浏览型号AD7874AR的Datasheet PDF文件第6页浏览型号AD7874AR的Datasheet PDF文件第7页 
AD7874  
(V = +5 V ؎ 5%, V = –5 V ؎ 5%, AGND = DGND = O V, tCLK = 2.5 MHz external unless  
otherwise noted.)  
DD  
SS  
1
TIMING CHARACTERISTICS  
P aram eter  
A, B Versions  
S Version  
Units  
Conditions/Com m ents  
t1  
t2  
t3  
t4  
t5  
50  
0
60  
0
50  
0
70  
0
ns min  
ns min  
ns min  
ns min  
ns max  
ns max  
ns min  
ns max  
ns min  
µs min  
µs max  
µs min  
µs max  
µs max  
CONVST Pulse Width  
CS to RD Setup T ime  
RD Pulse Width  
CS to RD Hold T ime  
RD to INT Delay  
60  
57  
5
45  
130  
31  
32.5  
31  
35  
10  
60  
70  
5
50  
150  
31  
32.5  
31  
35  
10  
2
t6  
t7  
Data Access T ime after RD  
Bus Relinquish T ime after RD  
3
t8  
tCONV  
Delay T ime between Reads  
CONVST to INT, External Clock  
CONVST to INT, External Clock  
CONVST to INT, Internal Clock  
CONVST to INT, Internal Clock  
Minimum Input Clock Period  
tCLK  
NOT ES  
1T iming Specifications in bold pr int are 100% production tested. All other times are sample tested at +25 °C to ensure compliance. All input signals are specified with  
tr = tf = 5 ns (10% to 90% of +5 V) and timed from a voltage level of 1.6 V.  
2t6 is measured with the load circuit of Figure 1 and defined as the time required for an output to cross 0.8 V or 2.4 V.  
3t7 is derived from the measured time taken by the data outputs to change 0.5 V when loaded with the circuit of Figure 2. T he measured number is then extrapolated  
back to remove the effects of charging or discharging the 50 pF capacitor. T his means that the time, t 7, quoted in the timing characteristics is the true bus relinquish  
time of the part and as such is independent of external bus loading capacitances.  
Specifications subject to change without notice.  
1.6mA  
ABSO LUTE MAXIMUM RATINGS*  
(T A = +25°C unless otherwise noted)  
VDD to AGND . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V  
VDD to DGND . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V  
TO OUTPUT  
+2.1V  
PIN  
50pF  
VSS to AGND . . . . . . . . . . . . . . . . . . . . . . . . . +0.3 V to –7 V  
AGND to DGND . . . . . . . . . . . . . . . . –0.3 V to VDD + 0.3 V  
VIN to AGND . . . . . . . . . . . . . . . . . . . . . . . . . –15 V to +15 V  
REF OUT to AGND . . . . . . . . . . . . . . . . . . . . . . . 0 V to VDD  
Digital Inputs to DGND . . . . . . . . . . . –0.3 V to VDD + 0.3 V  
Digital Outputs to DGND . . . . . . . . . . –0.3 V to VDD + 0.3 V  
Operating T emperature Range  
200µA  
Figure 1. Load Circuit for Access Tim e  
1.6mA  
Commercial (A, B Versions) . . . . . . . . . . . –40°C to +85°C  
Extended (S Version) . . . . . . . . . . . . . . . . –55°C to +125°C  
Storage T emperature Range . . . . . . . . . . . . –65°C to +150°C  
Lead T emperature (Soldering, 10 secs) . . . . . . . . . . . +300°C  
Power Dissipation (Any Package) to +75°C . . . . . . 1,000 mW  
Derates above +75°C by . . . . . . . . . . . . . . . . . . . . 10 mW/°C  
TO OUTPUT  
+2.1V  
PIN  
50pF  
200µA  
*Stresses above those listed under “Absolute Maximum Ratings” may cause  
permanent damage to the device. T his is a stress rating only and functional  
operation of the device at these or any other conditions above those listed in the  
operational sections of this specifications is not implied. Exposure to absolute  
maximum rating conditions for extended periods may affect device reliability.  
Figure 2. Load Circuit for Bus Relinquish Tim e  
CAUTIO N  
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily  
accumulate on the human body and test equipment and can discharge without detection.  
Although the AD7874 features proprietary ESD protection circuitry, permanent damage may  
occur on devices subjected to high energy electrostatic discharges. T herefore, proper ESD  
precautions are recommended to avoid performance degradation or loss of functionality.  
WARNING!  
ESD SENSITIVE DEVICE  
REV. C  
–3–  
1234567...17

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