Figure 21. Input Normal Mode Rejection at fS = 256 f
<big id="9ekb9"></big>
參數(shù)資料
型號： DC1012A-A
廠商： Linear Technology
文件頁數(shù)： 21/34頁
文件大?。?/td> 0K
描述： BOARD DELTA SIGMA ADC LTC2499
軟件下載： QuikEval System
設(shè)計(jì)資源： DC1012A Schematic
DC1012A Design File
標(biāo)準(zhǔn)包裝： 1
系列： Easy Drive™, QuikEval™
ADC 的數(shù)量： 1
位數(shù)： 24
采樣率（每秒）： 7.5
數(shù)據(jù)接口： I²C，串行
已用 IC / 零件： LTC2499
已供物品： 板
相關(guān)產(chǎn)品： LTC2499CUHF#TRPBF-ND - IC ADC 24BIT DELTA SIG 38-QFN
LTC2499IUHF#TRPBF-ND - IC ADC 24BIT DELTA SIG 38-QFN
LTC2499IUHF#PBF-ND - IC ADC 24BIT DELTA SIG 38-QFN
LTC2499CUHF#PBF-ND - IC ADC 24BIT DELTA SIG 38-QFN
LTC2499
2499fd
Figure 21. Input Normal Mode Rejection at fS = 256 fN
Figure 20. Input Normal Mode Rejection at DC
When using the internal oscillator, the LTC2499 is de-
signed to reject line frequencies. As shown in Figure 20,
rejection nulls occur at multiples of frequency fN, where
fN is determined by the input control bits FA and FB
(fN = 50Hz or 60Hz or 55Hz for simultaneous rejection).
Multiples of the modulator sampling rate (fS = fN 256)
only reject noise to 15dB (see Figure 21); if noise sources
are present at these frequencies anti-aliasing will reduce
their effects.
The user can expect to achieve this level of performance
using the internal oscillator, as shown in Figures 22, 23,
and 24. Measured values of normal mode rejection are
shown superimposed over the theoretical values in all
three rejection modes.
applications inForMation
Traditional high order delta-sigma modulators suffer from
potential instabilities at large input signal levels. The
proprietary architecture used for the LTC2499 third-order
modulator resolves this problem and guarantees stability
with input signals 150% of full scale. In many industrial
applications, it is not uncommon to have microvolt level
signals superimposed over unwanted error sources with
severalvoltsifpeak-to-peaknoise.Figures25and26show
measurement results for the rejection of a 7.5V peak-
LTC2499.Thesecurvesshowthattherejectionperformance
is maintained even in extremely noisy environments.
INPUT SIGNAL FREQUENCY (Hz)
INPUT
NORMAL
MODE
REJECTION
(dB)
2499 F20
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
fN
0
2fN 3fN 4fN 5fN 6fN 7fN 8fN
fN = fEOSC/5120
INPUT SIGNAL FREQUENCY (Hz)
250fN 252fN 254fN 256fN 258fN 260fN 262fN
INPUT
NORMAL
MODE
REJECTION
(dB)
2499 F21
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
fN = fEOSC/5120
相關(guān)PDF資料
PDF描述
DC1010A-A BOARD DELTA SIGMA ADC LTC2493
RCM15DCAH-S189 CONN EDGECARD 30POS R/A .156 SLD
ECC31DJCN CONN EDGECARD 62PS .100 PRESSFIT
DEMO9S08QB8 BOARD DEMO FOR 9S08 QB MCU
DC951A BOARD DELTA SIGMA ADC LTC2481
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DC1012A-B 功能描述:BOARD DELTA SIGMA ADC LTC2497 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - 模數(shù)轉(zhuǎn)換器 (ADC) 系列:Easy Drive™, QuikEval™ 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- ADC 的數(shù)量:1 位數(shù):12 采樣率（每秒）:94.4k 數(shù)據(jù)接口:USB 輸入范圍:±VREF/2 在以下條件下的電源（標(biāo)準(zhǔn)）:- 工作溫度:-40°C ~ 85°C 已用 IC / 零件:MAX11645 已供物品:板，軟件
DC1012A-C 功能描述:BOARD DELTA SIGMA ADC LTC2495 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - 模數(shù)轉(zhuǎn)換器 (ADC) 系列:Easy Drive™, QuikEval™ 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- ADC 的數(shù)量:1 位數(shù):12 采樣率（每秒）:94.4k 數(shù)據(jù)接口:USB 輸入范圍:±VREF/2 在以下條件下的電源（標(biāo)準(zhǔn)）:- 工作溫度:-40°C ~ 85°C 已用 IC / 零件:MAX11645 已供物品:板，軟件
DC-101-86-UL 制造商:Pan Pacific 功能描述:
DC1018B-A 功能描述:DEMO BOARD FOR LT4356-1 RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 評估演示板和套件 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 主要目的:數(shù)字電位器 嵌入式:- 已用 IC / 零件:AD5258 主要屬性:- 次要屬性:- 已供物品:板 相關(guān)產(chǎn)品:AD5258BRMZ1-ND - IC POT DGTL I2C1K 64P 10MSOPAD5258BRMZ10-ND - IC POT DGTL I2C 10K 64P 10MSOPAD5258BRMZ100-ND - IC POT DGTL I2C 100K 64P 10MSOPAD5258BRMZ50-ND - IC POT DGTL I2C 50K 64P 10MSOPAD5258BRMZ1-R7-ND - IC POT DGTL I2C 1K 64P 10MSOPAD5258BRMZ10-R7-ND - IC POT DGTL I2C 10K 64P 10MSOPAD5258BRMZ50-R7-ND - IC POT DGTL I2C 50K 64P 10MSOPAD5258BRMZ100-R7-ND - IC POT DGTL I2C 100K 64P 10MSOP
DC1018B-B 功能描述:DEMO BOARD FOR LT4356-2 RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 評估演示板和套件 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 主要目的:數(shù)字電位器 嵌入式:- 已用 IC / 零件:AD5258 主要屬性:- 次要屬性:- 已供物品:板 相關(guān)產(chǎn)品:AD5258BRMZ1-ND - IC POT DGTL I2C1K 64P 10MSOPAD5258BRMZ10-ND - IC POT DGTL I2C 10K 64P 10MSOPAD5258BRMZ100-ND - IC POT DGTL I2C 100K 64P 10MSOPAD5258BRMZ50-ND - IC POT DGTL I2C 50K 64P 10MSOPAD5258BRMZ1-R7-ND - IC POT DGTL I2C 1K 64P 10MSOPAD5258BRMZ10-R7-ND - IC POT DGTL I2C 10K 64P 10MSOPAD5258BRMZ50-R7-ND - IC POT DGTL I2C 50K 64P 10MSOPAD5258BRMZ100-R7-ND - IC POT DGTL I2C 100K 64P 10MSOP
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

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(jìn)入我的后臺，查看報(bào)價

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

*
*
*