Datasheet > LTC1669-8CMS8#TR

LTC1669-8CMS8#TR

更新时间： 2024-01-21 02:21:57

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	149K
描述
LTC1669 - 10-Bit Rail-to-Rail Micropower DAC with I<sup>2</sup>C Interface; Package: MSOP; Pins: 8; Temperature Range: 0°C to 70°C

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LTC1669-8CMS8#TR 技术参数

是否Rohs认证：	不符合	生命周期：	Active
包装说明：	TSSOP, TSSOP8,.19	Reach Compliance Code：	not_compliant
风险等级：	5.63	转换器类型：	D/A CONVERTER
JESD-30 代码：	R-PDSO-G8	JESD-609代码：	e0
最大线性误差 (EL)：	0.24%	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：	RECTANGULAR
封装形式：	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	电源：	3/5 V
认证状态：	Not Qualified	子类别：	Other Converters
最大压摆率：	0.125 mA	表面贴装：	YES
技术：	CMOS	温度等级：	COMMERCIAL
端子面层：	Tin/Lead (Sn/Pb)	端子形式：	GULL WING
端子节距：	0.635 mm	端子位置：	DUAL
Base Number Matches：	1

LTC1669-8CMS8#TR 数据手册

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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

used as the reference. If V = V and the DAC full-scale

REF

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

can occur if the internal reference is used.

SY/CLR

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

partsareavailableinSOT-23packages,thePCboardspace

for this application is extremely small. See Figure 2.

1669fa

1...8 9 101112 13 14...16

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与LTC1669-8CMS8#TR相关器件

型号	品牌	获取价格	描述	数据表
LTC1669-8IMS8	Linear	获取价格	10-Bit Rail-to-Rail Micropower DAC with I2C Interface
LTC1669CMS8	Linear	获取价格	10-Bit Rail-to-Rail Micropower DAC with I2C Interface
LTC1669CMS8#PBF	Linear	获取价格	LTC1669 - 10-Bit Rail-to-Rail Micropower DAC with I<sup>2</sup>C Interface; Pa
LTC1669CMS8#TR	Linear	获取价格	暂无描述
LTC1669CMS8#TRPBF	Linear	获取价格	LTC1669 - 10-Bit Rail-to-Rail Micropower DAC with I<sup>2</sup>C Interface; Pa
LTC1669CS5	Linear	获取价格	10-Bit Rail-to-Rail Micropower DAC with I2C Interface
LTC1669CS5#TRPBF	Linear	获取价格	LTC1669 - 10-Bit Rail-to-Rail Micropower DAC with I<sup>2</sup>C Interface; Pa
LTC1669IMS8	Linear	获取价格	10-Bit Rail-to-Rail Micropower DAC with I2C Interface
LTC1669IMS8#PBF	Linear	获取价格	LTC1669 - 10-Bit Rail-to-Rail Micropower DAC with I<sup>2</sup>C Interface; Pa
LTC1669IMS8#TR	Linear	获取价格	LTC1669 - 10-Bit Rail-to-Rail Micropower DAC with I<sup>2</sup>C Interface; Pa

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