參數(shù)資料
型號: LTC1452CN8
廠商: Linear Technology
文件頁數(shù): 12/12頁
文件大?。?/td> 0K
描述: IC D/A CONV 12BIT R-R 8-DIP
標(biāo)準(zhǔn)包裝: 50
設(shè)置時間: 14µs
位數(shù): 12
數(shù)據(jù)接口: 串行
轉(zhuǎn)換器數(shù)目: 1
電壓電源: 單電源
功率耗散(最大): 680µW
工作溫度: 0°C ~ 70°C
安裝類型: 通孔
封裝/外殼: 8-DIP(0.300",7.62mm)
供應(yīng)商設(shè)備封裝: 8-PDIP
包裝: 管件
輸出數(shù)目和類型: 1 電壓,單極;1 電壓,雙極
采樣率(每秒): *
9
LTC1451
LTC1452/LTC1453
sn145123 145123fas
An Isolated 4mA to 20mA Process Controller
Has 3.3V Minimum Loop Voltage
11451/2/3 TA04
3k
10k
1k
45k
5k
90k
5k
Q1
2N3440
RS
10
VLOOP
3.3V TO 30V
IOUT
OUT
IN
CLK
DIN
CS/LD
CLK
DIN
CS/LD
CLK
DIN
CS/LD
VCC
VOUT
1
F
LTC1453
4N28
OPTO-ISOLATORS
3.3V
500
LT
1121-3.3
FROM
OPTO-
ISOLATED
INPUTS
VREF
+
LT1077
This circuit shows how to use an LTC1453 to make an
opto-isolated digitally controlled 4mA to 20mA process
controller. The controller circuitry, including the opto-
isolation, is powered by the loop voltage that can have a
wide range of 3.3V to 30V. The 1.22V reference output of
the LTC1453 is used for the 4mA offset current and VOUT
is used for the digitally controlled 0mA to 16mA current.
RS is a sense resistor and the op amp modulates the
transistor Q1 to provide the 4mA to 20mA current through
this resistor. The potentiometers allow for offset and full-
scale adjustment. The control circuitry dissipates well
under the 4mA budget at zero-scale.
Note that although these DACs have internal Schmitt
triggers and are suitable for use with slow rising edges
such as produced by the above optoisolator, the use of
optoisolators in a daisy-chained topology requires the
addition of a gate or the use of a fast isolator on the clock
signal. Setup and hold times between DOUT and DIN are not
guaranteed unless a clock edge with a rise time of less than
100ns is provided.
TYPICAL APPLICATIO S
U
相關(guān)PDF資料
PDF描述
VI-263-MW-F2 CONVERTER MOD DC/DC 24V 100W
V150A28H400BG2 CONVERTER MOD DC/DC 28V 400W
V150A12H400BG3 CONVERTER MOD DC/DC 12V 400W
V150A12H400BG2 CONVERTER MOD DC/DC 12V 400W
AD5346BRU-REEL IC DAC 8BIT OCTAL VOUT 38-TSSOP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC1452CN8#PBF 功能描述:IC D/A CONV 12BIT R-R 8-DIP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:50 系列:- 設(shè)置時間:4µs 位數(shù):12 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:2 電壓電源:單電源 功率耗散(最大):- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP,8-MSOP(0.118",3.00mm 寬) 供應(yīng)商設(shè)備封裝:8-uMAX 包裝:管件 輸出數(shù)目和類型:2 電壓,單極 采樣率(每秒):* 產(chǎn)品目錄頁面:1398 (CN2011-ZH PDF)
LTC1452CN8PBF 制造商:Linear Technology 功能描述:LTC1452CN8PBF
LTC1452CS8 功能描述:IC D/A CONV 12BIT R-R 8-SOIC RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 產(chǎn)品培訓(xùn)模塊:LTC263x 12-, 10-, and 8-Bit VOUT DAC Family 特色產(chǎn)品:LTC2636 - Octal 12-/10-/8-Bit SPI VOUT DACs with 10ppm/°C Reference 標(biāo)準(zhǔn)包裝:91 系列:- 設(shè)置時間:4µs 位數(shù):10 數(shù)據(jù)接口:MICROWIRE?,串行,SPI? 轉(zhuǎn)換器數(shù)目:8 電壓電源:單電源 功率耗散(最大):2.7mW 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:14-DFN-EP(4x3) 包裝:管件 輸出數(shù)目和類型:8 電壓,單極 采樣率(每秒):*
LTC1452CS8#PBF 功能描述:IC D/A CONV 12BIT R-R 8-SOIC RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:50 系列:- 設(shè)置時間:4µs 位數(shù):12 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:2 電壓電源:單電源 功率耗散(最大):- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP,8-MSOP(0.118",3.00mm 寬) 供應(yīng)商設(shè)備封裝:8-uMAX 包裝:管件 輸出數(shù)目和類型:2 電壓,單極 采樣率(每秒):* 產(chǎn)品目錄頁面:1398 (CN2011-ZH PDF)
LTC1452CS8#TR 功能描述:IC DAC 12BIT R-R SGL 3-5V 8SOIC RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 產(chǎn)品培訓(xùn)模塊:LTC263x 12-, 10-, and 8-Bit VOUT DAC Family 特色產(chǎn)品:LTC2636 - Octal 12-/10-/8-Bit SPI VOUT DACs with 10ppm/°C Reference 標(biāo)準(zhǔn)包裝:91 系列:- 設(shè)置時間:4µs 位數(shù):10 數(shù)據(jù)接口:MICROWIRE?,串行,SPI? 轉(zhuǎn)換器數(shù)目:8 電壓電源:單電源 功率耗散(最大):2.7mW 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:14-DFN-EP(4x3) 包裝:管件 輸出數(shù)目和類型:8 電壓,單極 采樣率(每秒):*