LTC1669CMS8#TR

更新时间： 2024-02-01 12:36:45

品牌	Logo	应用领域
凌特 - Linear		转换器光电二极管
页数	文件大小	规格书
12页	186K
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数据手册

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LTC1669CMS8#TR 数据手册

LTC1669

W U U

APPLICATIONS INFORMATION

Slave Address (SOT-23 Package)

The Bandgap (BG) bit when set to “0” selects the DAC

supply voltage as its voltage reference. The full-scale

output of the DAC with this setting is equal to the supply

voltage. When the BG bit is set to “1,” the internal bandgap

reference(≈1.25V)isselectedastheDAC’sreference. The

full-scale output voltage for this setting is 2.5V.

The slave address for the SOT-23 package has been

factory programmed to be “0100 000” (LTC1669) and

“0100 001” (LTC1669-1). If another address is required,

please consult the factory.

Command Byte

Data Bytes

Least Significant Data Byte

Allows update on Acknowledge of SYNC Address only

Update on Stop condition only (Power-On Default)

Most Significant Data Byte

Puts the device in power-down mode

Puts the device in standard operating mode

(Power-On Default)

X = Don’t care

Selects the internal bandgap reference

Selects the supply as the reference (Power-On Default)

Send Byte Protocol

Don’t Care

The Send Byte protocol used on the LTC1669 is actually a

subset of the Write Word protocol described previously.

The Send Byte protocol can only be used to send the

command byte information to the LTC1669.

The stop condition normally initiates the update of the

DAC’s output latches. Simultaneous update of more than

one DAC or other devices on the bus can be achieved by

reissuing new start bit, address, command and data bytes

before issuing a final stop condition (which will update all

the devices). An alternate way to achieve simultaneous

LTC1669 updates is to override the stop condition update

by setting the “SY” bit of the command byte. Setting this

bit sets the device to update the DAC output latches only

at the reception of a SYNC address quick command. The

actual update occurs on the rising edge of SCL during the

Acknowledge. In this way, all devices can update on the

reception of the SYNC address quick command instead of

the STOP condition.

Slave Address Wr

Command Byte

S = Start Condition, Wr = Write Bit, A = Acknowledge, P = Stop Condition

1669 TA04

The Send Byte protocol is also used whenever the Write

Word protocol is interrupted for any reason. Reception of

a START or STOP condition after the Acknowledge of the

command byte, but before the Acknowledge of the last

data byte, will cause both data bytes to be ignored and the

command byte to be accepted.

Reception of a START or STOP condition before the

Acknowledge of the command byte will cause the inter-

rupted command byte to be ignored.

A Shutdown (SD) bit = HIGH will put the device in a low

powerstatebutretainalldatalatchinformation.Shutdown

will occur at the reception of a STOP condition. This way

shutdown could be synchronized to other devices. The

output impedance of the DAC will go to a high impedance

state (≈500kΩ to GND).

1669f

1...5 6 789 10 11 12

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与LTC1669CMS8#TR相关器件

型号	品牌	获取价格	描述	数据表
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
LTC1676CN8	Linear	获取价格	Switching Regulator, Current-mode, 0.7A, 100kHz Switching Freq-Max, CMOS, PDIP8
LTC1676CN8#PBF	Linear	获取价格	Switching Regulator, Current-mode, 0.7A, 100kHz Switching Freq-Max, CMOS, PDIP8
LTC1676CS8#PBF	Linear	获取价格	Switching Regulator, Current-mode, 0.7A, 100kHz Switching Freq-Max, CMOS, PDSO8
LTC1676IN8	Linear	获取价格	IC 0.7 A SWITCHING REGULATOR, 100 kHz SWITCHING FREQ-MAX, PDIP8, PLASTIC, DIP-8, Switching

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