- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄2006 > LTC2418IGN#TRPBF (Linear Technology)IC ADC 24BIT DIFF INPUT 28SSOP PDF資料下載
參數(shù)資料
| 型號： | LTC2418IGN#TRPBF |
| 廠商： | Linear Technology |
| 文件頁數(shù)： | 36/48頁 |
| 文件大小： | 0K |
| 描述： | IC ADC 24BIT DIFF INPUT 28SSOP |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 位數(shù)： | 24 |
| 采樣率（每秒）： | 7.5 |
| 數(shù)據(jù)接口： | MICROWIRE?，串行，SPI? |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 功率耗散（最大）： | 1mW |
| 電壓電源： | 單電源 |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 28-SSOP（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 28-SSOP |
| 包裝： | 帶卷 (TR) |
| 輸入數(shù)目和類型： | 16 個單端，單極；16 個單端，雙極；8 個差分，單極；8 個差分，雙極 |
| 配用： | DC571A-ND - BOARD DELTA SIGMA ADC LTC2418 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁當(dāng)前第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁
LTC2414/LTC2418
41
241418fa
MULTIPLE CHANNEL USAGE
The LTC2414/LTC2418 have up to sixteen input channels
and this feature provides a very flexible and efficient
solution in applications where more than one variable
need to be measured.
Measurements of a Ladder of Sensors
In industrial process, it is likely that a large group of real
world phenomena need to be monitored where the speed
is not critical. One example is the cracking towers in
petroleum refineries where a group of temperature mea-
surements need to be taken and related. This is done by
passing an excitation current through a ladder of RTDs.
The configuration using a single LTC2418 to monitor up to
eight RTDs in differential mode is shown in Figure 48. A
high accuracy R1 is used to set the excitation current and
the reference voltage. A larger value of 25k is selected to
C1
0.1
F
15V
3
1
2
3
2
1
6
5
4
–
+
REF+
REF–
CH0
CH1
GND
VCC
11
12
21
22
15
2410 F53
9
LTC2414/
LTC2418
LT1236-5
RN1
10k
22
10V
350
BRIDGE
TWO ELEMENTS
VARYING
RN1
10k
Q1
2N3904
1/2
LT1112
C2
0.1
F
15V
–5V
–15V
6
7
5
8
7
+
–
RN1
10k
RN1 IS CADDOCK T914 10K-010-02
Q2, Q3
2N3906
×2
1/2
LT1112
RN1
10k
33
×2
C3
47
F
C1
0.1
F
5V
8
4
20
20
+
Figure 47. Use Resistor Arrays to Provide Precise Matching in Excitation Amplifier
reduce the self-heating effects. R1 can also be broken into
two resistors, one 25k to set the excitation current and the
other a high accuracy 1k resistor to set the reference
voltage, assuming 100
platinum RTDs. This results in a
reduced reference voltage and a reduced common mode
difference between the reference and the input signal,
which improves the conversion linearity and reduces total
error.
Each input should be taken close to the related RTD to
minimize the error caused by parasitic wire resistance.
The interference on a signal transmission line from RTD to
the LTC2418 is rejected due to the excellent common
mode rejection and the digital LPF included in the LTC2418.
It should be noted that the input source resistance of CHO
can have a maximum value of 800
8 = 6.4k, so the
parasitic capacitance and resistance of the connection
wires need to be minimized in order not to degrade the
converter performance.
APPLICATIO S I FOR ATIO
WU
UU
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LTC2431IMS#TRPBF | IC ADC 20BIT DIFFINPUT/REF10MSOP |
| LTC2433-1IMS#TRPBF | IC ADC DIFF 16BIT 3WIRE 10-MSOP |
| LTC2435CGN#TRPBF | IC ADC DIFF I/REF 20BIT 16-SSOP |
| LTC2442IG#PBF | IC ADC 24BIT 4CH 36-SSOP |
| LTC2446IUHF#TRPBF | IC ADC 24BIT 8CH HI SPEED 38QFN |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC2420CS8 | 功能描述:IC ADC 20BIT MICRPWR W/OSC 8SOIC RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 位數(shù):16 采樣率（每秒）:45k 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:2 功率耗散（最大）:315mW 電壓電源:模擬和數(shù)字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類型:2 個單端，單極 |
| LTC2420CS8#PBF | 功能描述:IC ADC 20BIT MICRPWR W/OSC 8SOIC RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:microPOWER™ 位數(shù):8 采樣率（每秒）:1M 數(shù)據(jù)接口:串行，SPI? 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:- 電壓電源:模擬和數(shù)字 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:24-VQFN 裸露焊盤（4x4） 包裝:Digi-Reel® 輸入數(shù)目和類型:8 個單端，單極 產(chǎn)品目錄頁面:892 (CN2011-ZH PDF) 其它名稱:296-25851-6 |
| LTC2420CS8#PBF | 制造商:Linear Technology 功能描述:A/D Converter (A-D) IC |
| LTC2420CS8#TR | 功能描述:IC A/D CONV 20BIT MICRPWR 8-SOIC RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 位數(shù):16 采樣率（每秒）:45k 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:2 功率耗散（最大）:315mW 電壓電源:模擬和數(shù)字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類型:2 個單端，單極 |
| LTC2420CS8#TRPBF | 功能描述:IC ADC 20BIT MICRPWR W/OSC 8SOIC RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 位數(shù):16 采樣率（每秒）:45k 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:2 功率耗散（最大）:315mW 電壓電源:模擬和數(shù)字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類型:2 個單端，單極 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。