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LTC1669CMS8#PBF PDF预览

LTC1669CMS8#PBF

更新时间: 2024-02-17 17:53:17
品牌 Logo 应用领域
凌特 - Linear 光电二极管转换器
页数 文件大小 规格书
16页 157K
描述
LTC1669 - 10-Bit Rail-to-Rail Micropower DAC with I<sup>2</sup>C Interface; Package: MSOP; Pins: 8; Temperature Range: 0&deg;C to 70&deg;C

LTC1669CMS8#PBF 技术参数

是否Rohs认证: 符合生命周期:Transferred
零件包装代码:MSOP包装说明:TSSOP, TSSOP8,.19
针数:8Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:2.84最大模拟输出电压:5.5 V
最小模拟输出电压:转换器类型:D/A CONVERTER
输入位码:BINARY输入格式:SERIAL
JESD-30 代码:S-PDSO-G8JESD-609代码:e3
长度:3 mm最大线性误差 (EL):0.2441%
湿度敏感等级:1位数:10
功能数量:1端子数量:8
最高工作温度:70 °C最低工作温度:
封装主体材料:PLASTIC/EPOXY封装代码:TSSOP
封装等效代码:TSSOP8,.19封装形状:SQUARE
封装形式:SMALL OUTLINE, THIN PROFILE, SHRINK PITCH峰值回流温度(摄氏度):260
电源:3/5 V认证状态:Not Qualified
座面最大高度:1.1 mm标称安定时间 (tstl):30 µs
子类别:Other Converters最大压摆率:0.125 mA
标称供电电压:3 V表面贴装:YES
技术:CMOS温度等级:COMMERCIAL
端子面层:Matte Tin (Sn)端子形式:GULL WING
端子节距:0.65 mm端子位置:DUAL
处于峰值回流温度下的最长时间:30宽度:3 mm
Base Number Matches:1

LTC1669CMS8#PBF 数据手册

 浏览型号LTC1669CMS8#PBF的Datasheet PDF文件第8页浏览型号LTC1669CMS8#PBF的Datasheet PDF文件第9页浏览型号LTC1669CMS8#PBF的Datasheet PDF文件第10页浏览型号LTC1669CMS8#PBF的Datasheet PDF文件第12页浏览型号LTC1669CMS8#PBF的Datasheet PDF文件第13页浏览型号LTC1669CMS8#PBF的Datasheet PDF文件第14页 
LTC1669  
APPLICATIONS INFORMATION  
SYNC Address/Quick Command  
Rail-to-Rail Output Considerations  
As in any rail-to-rail device, the output is limited to volt-  
ages within the supply range.  
Inadditiontotheslaveaddress,theLTC1669hasanaddress  
that can be shared by other devices so that they may be  
updatedsynchronously. TheaddressiscalledtotheSYNC  
address and uses the quick command protocol.  
If the DAC offset is negative, the output for the lowest  
codes limits at 0V as shown in Figure 1b.  
The SYNC Address is 1111 110  
Similarly, limiting can occur near full scale when V is  
CC  
1
7
1
1
1
used as the reference. If V = V and the DAC full-scale  
REF  
CC  
Start 1111 110  
SYNC Address  
SY/CLR  
Ack  
Stop  
1669 TA05  
error (FSE) is positive, the output for the highest codes  
limits at V as shown in Figure 1c. No full-scale limiting  
CC  
can occur if the internal reference is used.  
SY/CLR  
1
0
Update output latches on rising edge of SCL during  
Acknowledge of SYNC Address  
Clear all internal latches on rising edge of SCL during  
Acknowledge of SYNC Address  
Offset and linearity are defined and tested over the region  
of the DAC transfer function where no output limiting can  
occur.  
The SY/CLR bit set high only has meaning when the “SY”  
bit of the command byte was previously set HIGH. On  
the otherhand, the SY/CLR bit set LOW will always clear  
the part, independent of the state of the “SY” bit in the  
command byte.  
Internal Reference  
In applications where a predictable output is required  
that is independent of supply voltage, the LTC1669 has a  
user-selectable internal reference. Selecting the internal  
reference will set the full-scale output voltage to 2.5V. This  
can be useful in applications where the supply voltage is  
poorly regulated.  
Voltage Output  
The output amplifier contained in the LTC1669 can source  
or sink up to 5mA. The output stage swings to within a  
few millivolts of either supply rail when unloaded and  
has an equivalent output resistance of 85Ω when driving  
a load to the rails. The output amplifier is stable driving  
capacitive loads up to 1000pF.  
Using the LT®1460 Micropower Series Reference as a  
Power Supply for the LTC1669  
In applications where the advantages of using the internal  
reference are required but the full-scale range needs to  
be greater than 2.5V, an external series reference can be  
used. The LT1460 is ideal for use as a power supply for  
the LTC1669 and can provide 3V, 3.3V and 5V full-scale  
outputvoltageranges.TheLT1460providesaccuracy,noise  
immunityandextendedsupplyrangetotheLTC1669when  
A small resistor placed in series with the output can be  
used to achieve stability for any load capacitance greater  
than 1000pF. For example, a 0.1μF load can be driven  
by the LTC1669 if a 110Ω series resistance is used. The  
phase margin of the resulting circuit is 45° and increases  
monotonicallyfromthispointiflargervaluesofresistance,  
capacitance or both are substituted for the values given.  
the LTC1669 is operated ratiometric to V . Since both  
CC  
partsareavailableinSOT-23packages,thePCboardspace  
for this application is extremely small. See Figure 2.  
1669fa  
11  

LTC1669CMS8#PBF 替代型号

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LTC1669 - 10-Bit Rail-to-Rail Micropower DAC with I<sup>2</sup>C Interface; Pa

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