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AD7874AR PDF预览

AD7874AR

更新时间: 2024-02-05 13:54:11
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

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

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AD7874  
TERMINO LO GY  
P IN CO NFIGURATIO NS  
D IP and SO IC  
ACQ UISITIO N TIME  
Acquisition T ime is the time required for the output of the  
track/hold amplifiers to reach their final values, within ±1/2  
LSB, after the falling edge of INT (the point at which the track/  
holds return to track mode). T his includes switch delay time,  
slewing time and settling time for a full-scale voltage change.  
V
V
1
2
28  
27  
26  
V
V
V
IN1  
IN4  
IN3  
SS  
IN2  
V
3
DD  
INT  
CONVST  
RD  
4
25 REF OUT  
24 REF IN  
23 AGND  
22 DB0 (LSB)  
21 DB1  
AP ERTURE D ELAY  
Aperture Delay is defined as the time required by the internal  
switches to disconnect the hold capacitors from the inputs. T his  
produces an effective delay in sample timing. It is measured by  
applying a step input and adjusting the CONVST input position  
until the output code follows the step input change.  
5
6
AD7874  
TOP VIEW  
(Not to Scale)  
CS  
7
CLK  
8
V
9
20 DB2  
DD  
10  
DB11 (MSB)  
19 DB3  
AP ERTURE D ELAY MATCH ING  
Aperture Delay Matching is the maximum deviation in aperture  
delays across the four on-chip track/hold amplifiers.  
DB10 11  
12  
18 DB4  
DB9  
17 DB5  
DB8 13  
14  
16 DB6  
AP ERTURE JITTER  
DGND  
15 DB7  
Aperture Jitter is the uncertainty in aperture delay caused by  
internal noise and variation of switching thresholds with signal  
level.  
LCCC  
D RO O P RATE  
Droop Rate is the change in the held analog voltage resulting  
from leakage currents.  
4
3
2
28 27 26  
1
25  
24  
23  
5
6
CONVST  
RD  
REF OUT  
REF IN  
AGND  
CH ANNEL-TO -CH ANNEL ISO LATIO N  
7
CS  
AD7874  
TOP VIEW  
(Not to Scale)  
Channel-to-Channel Isolation is a measure of the level of  
crosstalk between channels. It is measured by applying a full-  
scale 1 kHz signal to the other three inputs. T he figure given is  
the worst case across all four channels.  
8
22 DB0 (LSB)  
CLK  
9
21  
20  
V
DB1  
DB2  
DD  
10  
11  
DB11 (MSB)  
DB10  
19 DB3  
SNR, TH D , IMD  
12 13 14 15 16 17 18  
See DYNAMIC SPECIFICAT IONS section.  
–4–  
REV. C  

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