參數(shù)資料
型號： LTC2418IGN#PBF
廠商： Linear Technology
文件頁數(shù)： 32/48頁
文件大小： 0K
描述： IC ADC 24BIT DIFF INPUT 28SSOP
標準包裝： 49
位數(shù)： 24
采樣率（每秒）： 7.5
數(shù)據(jù)接口： MICROWIRE?，串行，SPI?
轉換器數(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）
供應商設備封裝： 28-SSOP
包裝： 管件
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
產(chǎn)品目錄頁面： 1348 (CN2011-ZH PDF)
配用： DC571A-ND - BOARD DELTA SIGMA ADC LTC2418
LTC2414/LTC2418
38
241418fa
Figure 43 shows an example of a single amplifier used to
produce single-ended gain. This topology is best used in
applications where the gain setting resistor can be made
to match the temperature coefficient of the strain gauges.
If the bridge is composed of precision resistors, with only
one or two variable elements, the reference arm of the
bridge can be made to act in conjunction with the feedback
resistor to determine the gain. If the feedback resistor is
incorporated into the design of the load cell, using resis-
tors which match the temperature coefficient of the load-
cell elements, good results can be achieved without the
need for resistors with a high degree of absolute accuracy.
The common mode voltage in this case, is again a function
of the bridge output. Differential gain as used with a 350
bridge is AV = (R1+ R2)/(R1+175). Common mode gain
is half the differential gain. The maximum differential
signal that can be used is 1/4 VREF, as opposed to 1/2 VREF
in the 2-amplifier topology above.
Remote Half Bridge Interface
As opposed to full bridge applications, typical half bridge
applications must contend with nonlinearity in the bridge
output, as signal swing is often much greater. Applications
include RTD’s, thermistors and other resistive elements
that undergo significant changes over their span. For
single variable element bridges, the nonlinearity of the half
bridge output can be eliminated completely; if the refer-
ence arm of the bridge is used as the reference to the ADC,
as shown in Figure 44. The LTC2414/LTC2418 can accept
inputs up to 1/2 VREF. Hence, the reference resistor R1
must be at least 2x the highest value of the variable
resistor.
In the case of 100
platinum RTD’s, this would suggest a
value of 800
for R1. Such a low value for R1 is not
advisable due to self-heating effects. A value of 25.5k is
shown for R1, reducing self-heating effects to acceptable
levels for most sensors.
APPLICATIO S I FOR ATIO
WU
UU
Figure 43. Bridge Amplification Using a Single Amplifier
0.1
F
5V
REF+
REF–
CH0
CH1
GND
VCC
11
3
2
4
6
7
12
350
BRIDGE
21
22
2410 F49
15
9
LTC2414/
LTC2418
–
+
LTC1050S8
5V
0.1
V
R2
46.4k
20k
175
1
F
10
F
R1
4.99k
()
AV = 9.95 =
R1 + R2
R1 + 175
+
1
F
+
2410 F50
REF+
REF–
CH0
CH1
GND
VCC
VS
2.7V TO 5.5V
11
12
21
22
PLATINUM
100
RTD
R1
25.5k
0.1%
15
9
LTC2414/
LTC2418
Figure 44. Remote Half Bridge Interface
相關PDF資料
PDF描述
AD7651ASTZ IC ADC 16BIT 100KSPS 48-LQFP
VI-2WM-IX-B1 CONVERTER MOD DC/DC 10V 75W
LTC1402CGN#PBF IC ADC 12BIT 2.2MSPS SHDN 16SSOP
VE-2N2-IX-B1 CONVERTER MOD DC/DC 15V 75W
VE-26Y-IV-B1 CONVERTER MOD DC/DC 3.3V 99W
相關代理商/技術參數(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)轉換器 系列:- 標準包裝: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） 供應商設備封裝: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)轉換器 系列:- 標準包裝: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 供應商設備封裝: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)轉換器 系列:- 標準包裝: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） 供應商設備封裝: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)轉換器 系列:- 標準包裝: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） 供應商設備封裝: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。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*