- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄384633 > LTC2485 (Linear Technology Corporation) Easy-to-Use, Ultra-Tiny 16-Bit ADC PDF資料下載
參數(shù)資料
| 型號(hào)： | LTC2485 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Easy-to-Use, Ultra-Tiny 16-Bit ADC |
| 中文描述： | 易于使用，超微型16位ADC |
| 文件頁(yè)數(shù)： | 16/20頁(yè) |
| 文件大?。?/td> | 212K |
| 代理商： | LTC2485 |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)當(dāng)前第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)
LTC2450-1
16
24501fb
APPLICATIONS INFORMATION
For most applications, it is desirable to implement C
IN
as
a high quality 0.1μF ceramic capacitor and R
S
≤ 1k. This
capacitor should be located as close as possible to the
actual V
IN
package pin. Furthermore the area encompassed
by this circuit path as well as the path length should be
minimized.
In the case of a 2-wire sensor which is not remotely
grounded, it is desirable to split R
S
and place series
resistors in the ADC input line as well as in the sensor
ground return line which should be tied to the ADC GND
pin using a star connection topology.
Figure 16 shows the measured LTC2450-1 INL vs
Input Voltage as a function of R
S
value with an input
capacitor C
IN
= 0.1μF
In some cases, R
S
can be increased above these guide-
lines. The input current is zero while the ADC is either in
sleep or I/O modes. Thus, if the time constant of the input
R-C circuit
τ
= R
S
C
IN
is of the same order magnitude or
Figure 16. Measured INL vs Input Voltage,
C
IN
= 0.1μF, V
CC
= 5V, T
A
= 25°C
longer than the time periods between actual conversions,
then one can consider the input current to be reduced
correspondingly.
These considerations need to be balanced out by the input
signal bandwidth. The 3dB bandwidth
1/(2
π
R
S
C
IN
).
Finally, if the recommended choice for C
IN
is unacceptable
for the user’s specific application, an alternate strategy is to
eliminate C
IN
and minimize C
PAR
and R
S
. In practical terms,
this configuration corresponds to a low impedance sensor
directly connected to the ADC through minimum length
traces. Actual applications include current measurements
through low value sense resistors, temperature measure-
ments, low impedance voltage source monitoring and so
on. The resultant INL vs V
IN
is shown in Figure 17. The
measurements of Figure 17 include a C
PAR
capacitor cor-
responding to a minimum size layout pad and a minimum
width input trace of about 1 inch length.
Figure 17. Measured INL vs V
IN
, C
IN
= 0, V
CC
= 5V, T
A
= 25°C
INPUT VOLTAGE (V)
0
I
–4
0
4
3
5
24501 F16
–8
–12
–16
1
2
4
8
12
16
R
S
= 10k
R
S
= 1k
R
S
= 0
INPUT VOLTAGE (V)
0
I
8
6
4
2
0
–2
–4
–6
–8
4
24501 F17
1
2
3
5
3.5
0.5
1.5
2.5
4.5
R
S
= 1k
R
S
= 10k
R
S
= 0
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LTC2453 | Easy-to-Use, Ultra-Tiny, Differential, 16-Bit ADC With I2C Interface |
| LTC2453CDDBTRMPBF | Easy-to-Use, Ultra-Tiny, Differential, 16-Bit ADC With I2C Interface |
| LTC2453IDDBTRMPBF | Easy-to-Use, Ultra-Tiny, Differential, 16-Bit ADC With I2C Interface |
| LTC4416 | 36V, Low Loss Dual PowerPath Controllers for Large PFETs |
| LTC4416-1 | 36V, Low Loss Dual PowerPath Controllers for Large PFETs |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC2485CDD#PBF | 功能描述:IC ADC 24BIT I2C 10-DFN RoHS:是 類(lèi)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(lèi)型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:24-VQFN 裸露焊盤(pán)（4x4） 包裝:Digi-Reel® 輸入數(shù)目和類(lèi)型:8 個(gè)單端，單極 產(chǎn)品目錄頁(yè)面:892 (CN2011-ZH PDF) 其它名稱(chēng):296-25851-6 |
| LTC2485CDD#TRPBF | 功能描述:IC ADC 24BIT I2C 10-DFN RoHS:是 類(lèi)別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)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:2,500 系列:- 位數(shù):12 采樣率（每秒）:3M 數(shù)據(jù)接口:- 轉(zhuǎn)換器數(shù)目:- 功率耗散（最大）:- 電壓電源:- 工作溫度:- 安裝類(lèi)型:表面貼裝 封裝/外殼:SOT-23-6 供應(yīng)商設(shè)備封裝:SOT-23-6 包裝:帶卷 (TR) 輸入數(shù)目和類(lèi)型:- |
| LTC2485IDD | 制造商:Linear Technology 功能描述:ADC Single Delta-Sigma 7.5sps 24-bit Serial 10-Pin DFN EP |
| LTC2485IDD#PBF | 功能描述:IC ADC 24BIT I2C 10-DFN RoHS:是 類(lèi)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(lèi)型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:24-VQFN 裸露焊盤(pán)（4x4） 包裝:Digi-Reel® 輸入數(shù)目和類(lèi)型:8 個(gè)單端，單極 產(chǎn)品目錄頁(yè)面:892 (CN2011-ZH PDF) 其它名稱(chēng):296-25851-6 |
| LTC2485IDD#TRPBF | 功能描述:IC ADC 24BIT I2C 10-DFN RoHS:是 類(lèi)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:2,500 系列:- 位數(shù):16 采樣率（每秒）:15 數(shù)據(jù)接口:MICROWIRE?，串行，SPI? 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:480µW 電壓電源:單電源 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:38-WFQFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:38-QFN（5x7） 包裝:帶卷 (TR) 輸入數(shù)目和類(lèi)型:16 個(gè)單端，雙極；8 個(gè)差分，雙極 配用:DC1011A-C-ND - BOARD DELTA SIGMA ADC LTC2494 |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。