參數(shù)資料
型號： LTC1292BC
廠商： Linear Technology Corporation
元件分類： Codec
英文描述： Single Channel Codec W/Hybrid Op Amps & Speaker Driver 48-LQFP 0 to 70
中文描述： 單芯片12位數(shù)據(jù)采集系統(tǒng)
文件頁數(shù)： 23/24頁
文件大?。?/td> 466K
代理商： LTC1292BC
23
LTC1292/LTC1297
U
S
A
O
PPLICATI
U
U
Opto-Isolated Temperature Monitor
Amplification of sensor outputs is often required to
generate a signal large enough to be properly digitized.
For example, a J-type thermocouple provides only
52
μ
V/
°
C. The 5
μ
V offset of the LTC1050 chopper op
amp generates less than 0.1
°
C error (Figure 31). Cold
junction compensation is provided by the LT1025A.
(For more detail see LTC Design Note 5).
In the opto-isolated interface two signals are generated
from one. This allows a two-wire interface to the
LTC1292. A long high signal (>1ms) on the CLK IN input
allows the 0.1
μ
F capacitor to discharge taking CS high.
This resets the A/D for the next conversion. When CLK
IN starts toggling, CS goes low and stays there until the
next extended CLK IN high time. See Figure 30.
5V/DIV
A
CLK IN
CS
DATA OUT
20
μ
s/DIV
+
1 F
μ
TYPE J
J
R
GND
LT1025A
V
IN
H
2
2
3
–
+
LTC1050
7
4
6
+
0.33 F
μ
178k
0.1%
3.4k
0.1%
2k
0.1%
47
+
1 F
μ
GND
LTC1292
V
CC
CLK
–IN
+IN
CS
D
OUT
V
REF
+
4.7 F
μ
3
+
0.1 F
μ
10k
1N4148
8
7
6
5
1
2
3
4
+
22 F
μ
LT1019-2.5
500k
1
2
1k
CLK IN
3
4
500k
3
4
5k
DATA
OUT
1
2
6
1k
4N28s
1N4148
0°C – 500°C TEMPERATURE RANGE
ISOLATED
5V
4
5
+
–
A
6
100k
74C14
5V
5V
5k
LTC1292/7 F31
1N4148
Figure 31. Opto-Isolated Temperature Monitor
Figure 30. Opto-Isolated Temperature
Monitor Digital Waveforms
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
相關(guān)PDF資料
PDF描述
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LTC1292CI Single Chip 12-Bit Data Acquisition Systems
LTC1292DI Single Chip 12-Bit Data Acquisition Systems
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LTC1292BCJ8 制造商:Linear Technology 功能描述:ADC Single SAR 60ksps 12-bit Serial 8-Pin CDIP
LTC1292BCN8 功能描述:IC DATA ACQ SYSTEM 12BIT 8-DIP RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - ADCs/DAC - 專用型 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:- 類型:數(shù)據(jù)采集系統(tǒng)（DAS） 分辨率（位）:16 b 采樣率（每秒）:21.94k 數(shù)據(jù)接口:MICROWIRE?，QSPI?，串行，SPI? 電壓電源:模擬和數(shù)字 電源電壓:1.8 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:40-TQFN-EP（6x6） 包裝:托盤
LTC1292BCN8#PBF 功能描述:IC DATA ACQ SYSTEM 12BIT 8-DIP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - ADCs/DAC - 專用型 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:- 類型:數(shù)據(jù)采集系統(tǒng)（DAS） 分辨率（位）:16 b 采樣率（每秒）:21.94k 數(shù)據(jù)接口:MICROWIRE?，QSPI?，串行，SPI? 電壓電源:模擬和數(shù)字 電源電壓:1.8 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:40-TQFN-EP（6x6） 包裝:托盤
LTC1292BIN8 功能描述:IC DATA ACQ SYSTEM 12BIT 8-DIP RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - ADCs/DAC - 專用型 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:- 類型:數(shù)據(jù)采集系統(tǒng)（DAS） 分辨率（位）:16 b 采樣率（每秒）:21.94k 數(shù)據(jù)接口:MICROWIRE?，QSPI?，串行，SPI? 電壓電源:模擬和數(shù)字 電源電壓:1.8 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:40-TQFN-EP（6x6） 包裝:托盤
LTC1292BIN8#PBF 功能描述:IC DATA ACQ SYSTEM 12BIT 8-DIP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - ADCs/DAC - 專用型 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:- 類型:數(shù)據(jù)采集系統(tǒng)（DAS） 分辨率（位）:16 b 采樣率（每秒）:21.94k 數(shù)據(jù)接口:MICROWIRE?，QSPI?，串行，SPI? 電壓電源:模擬和數(shù)字 電源電壓:1.8 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:40-TQFN-EP（6x6） 包裝:托盤
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