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AD7874BQ

更新时间： 2024-01-02 19:24:14
品牌 Logo 应用领域
亚德诺 - ADI 转换器信息通信管理
页数 文件大小 规格书
16页 417K
描述
LC2MOS 4-Channel, 12-Bit Simultaneous Sampling Data Acquisition System

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AD7874BQ 技术参数

Source Url Status Check Date：2013-05-01 14:56:21.354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, DIP28,.6
针数：28Reach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：1.54Is Samacsys：N
最大模拟输入电压：15 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 APPROXIMATION
JESD-30 代码：R-GDIP-T28JESD-609代码：e0
长度：37.84 mm最大线性误差 (EL)：0.024%
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：125 °C
最低工作温度：-55 °C输出位码：2'S COMPLEMENT BINARY
封装主体材料：CERAMIC, GLASS-SEALED封装代码：DIP
封装等效代码：DIP28,.6封装形状：RECTANGULAR
封装形式：IN-LINE峰值回流温度（摄氏度）：NOT APPLICABLE
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
筛选级别：MIL-STD-883 Class B座面最大高度：5.59 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：NO
技术：CMOS温度等级：MILITARY
端子面层：Tin/Lead (Sn63Pb37)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：13.2 mm
Base Number Matches：1

AD7874BQ 数据手册

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AD7874  
P IN FUNCTIO N D ESCRIP TIO N  
P in  
Mnem onic  
D escription  
1
VIN1  
Analog Input Channel 1. T his is the first of the four input channels to be converted in a con-  
version cycle. Analog input voltage range is ±10 V.  
2
3
4
5
VIN2  
Analog Input Channel 2. Analog input voltage range is ±10 V.  
VDD  
Positive supply voltage, +5 V ± 5%. T his pin should be decoupled to AGND.  
Interrupt. Active low logic output indicating converter status. See Figure 7.  
INT  
CONVST  
Convert Start. Logic Input. A low to high transition on this input puts the track/hold into its  
hold mode and starts conversion. T he four channels are converted sequentially, Channel 1 to  
Channel 4. T he CONVST input is asynchronous to CLK and independent of CS and RD.  
6
RD  
Read. Active low logic input. T his input is used in conjunction with CS low to enable the  
data outputs. Four successive reads after a conversion will read the data from the four chan-  
nels in the sequence, Channel 1, 2, 3, 4.  
7
8
CS  
Chip Select. Active low logic input. T he device is selected when this input is active.  
CLK  
Clock Input. An external T T L-compatible clock may be applied to this input pin. Alterna-  
tively, tying this pin to VSS enables the internal laser trimmed clock oscillator.  
9
VDD  
Positive Supply Voltage, +5 V ± 5%. Same as Pin 3; both pins must be tied together at the  
package. T his pin should be decoupled to DGND.  
10  
DB11  
Data Bit 11 (MSB). T hree-state T T L output. Output coding is 2s complement.  
Data Bit 10 to Data Bit 8. T hree-state T T L outputs.  
11–13  
14  
DB10–DB8  
DGND  
DB7–DB1  
DB0  
Digital Ground. Ground reference for digital circuitry.  
Data Bit 7 to Data Bit 1. T hree-state T T L outputs.  
15–21  
22  
Data Bit 0 (LSB). T hree-state T T L output.  
23  
AGND  
Analog Ground. Ground reference for track/hold, reference and DAC.  
24  
REF IN  
Voltage Reference Input. T he reference voltage for the part is applied to this pin. It is inter-  
nally buffered, requiring an input current of only ±1 µA. T he nominal reference voltage for  
correct operation of the AD7874 is 3 V.  
25  
REF OUT  
Voltage Reference Output. T he internal 3 V analog reference is provided at this pin. T o oper-  
ate the AD7874 with internal reference, REF OUT is connected to REF IN. T he external  
load capability of the reference is 500 µA.  
26  
27  
28  
VSS  
Negative Supply Voltage, –5 V ± 5%.  
VIN3  
VIN4  
Analog Input Channel 3. Analog input voltage range is ±10 V.  
Analog Input Channel 4. Analog input voltage range is ±10 V.  
O RD ERING GUID E  
Relative  
Tem perature  
Range  
SNR  
(dBs)  
Accuracy  
(LSB)  
P ackage  
O ption2  
Model1  
AD7874AN  
AD7874BN  
AD7874AR  
AD7874BR  
AD7874AQ  
AD7874BQ  
AD7874SQ3  
AD7874SE3  
–40°C to +85°C  
–40°C to +85°C  
–40°C to +85°C  
–40°C to +85°C  
–40°C to +85°C  
–40°C to +85°C  
70 min  
72 min  
70 min  
72 min  
70 min  
72 min  
±1 max  
±1/2 max  
±1 max  
±1/2 max  
±1 max  
±1/2 max  
±1 max  
±1 max  
N-28  
N-28  
R-28  
R-28  
Q-28  
Q-28  
Q-28  
E-28A  
–55°C to +125°C 70 min  
–55°C to +125°C 70 min  
NOT ES  
1T o order MIL-ST D-883, Class B processed parts, add /883B to part number. Contact  
1our local sales office for military data sheet and availability.  
2E = Leaded Ceramic Chip Carrier; N = Plastic DIP; Q = Cerdip; R = SOIC.  
3Available to /883B processing only.  
REV. C  
–5–  
12345678...16

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