- 您現(xiàn)在的位置：買賣IC網 > PDF目錄17061 > DC1012A-A (Linear Technology)BOARD DELTA SIGMA ADC LTC2499 PDF資料下載
參數資料
| 型號： | DC1012A-A |
| 廠商： | Linear Technology |
| 文件頁數： | 24/34頁 |
| 文件大?。?/td> | 0K |
| 描述： | BOARD DELTA SIGMA ADC LTC2499 |
| 軟件下載： | QuikEval System |
| 設計資源： | DC1012A Schematic DC1012A Design File |
| 標準包裝： | 1 |
| 系列： | Easy Drive™, QuikEval™ |
| ADC 的數量： | 1 |
| 位數： | 24 |
| 采樣率（每秒）： | 7.5 |
| 數據接口： | I²C，串行 |
| 已用 IC / 零件： | LTC2499 |
| 已供物品： | 板 |
| 相關產品： | 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 |
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頁當前第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
LTC2499
0
2499fd
Usingthe2XspeedmodeoftheLTC2499alterstherejection
characteristics around DC and multiples of fS. The device
bypassestheoffsetcalibrationinordertoincreasetheoutput
rate. The resulting rejection plots are shown in Figures 27
and 28. 1x type frequency rejection can be achieved us-
ing the 2x mode by performing a running average of the
previous two conversion results (see Figure 29).
Output Data Rate
When using its internal oscillator, the LTC2499 produces
up to 7.5 samples per second (sps) with a notch frequency
of60Hz.Theactualoutputdataratedependsuponthelength
of the sleep and data output cycles which are controlled
by the user and can be made insignificantly short. When
operating with an external conversion clock (fO connected
to an external oscillator), the LTC2499 output data rate
can be increased. The duration of the conversion cycle is
41036/fEOSC. If fEOSC = 307.2kHz, the converter behaves
as if the internal oscillator is used.
An increase in fEOSC over the nominal 307.2kHz will trans-
late into a proportional increase in the maximum output
data rate (up to a maximum of 100sps). The increase in
output rate leads to degradation in offset, full-scale error,
and effective resolution as well as a shift in frequency
rejection. When using the integrated temperature sensor,
the internal oscillator should be used or an external oscil-
lator fEOSC = 307.2kHz maximum.
A change in fEOSC results in a proportional change in the
internal notch position. This leads to reduced differential
mode rejection of line frequencies. The common mode
rejectionoflinefrequenciesremainsunchanged,thusfully
differential input signals with a high degree of symmetry
on both the IN+ and IN– pins will continue to reject line
frequency noise.
An increase in fEOSC also increases the effective dynamic
input and reference current. External RC networks will
continue to have zero differential input current, but the
time required for complete settling (580ns for fEOSC =
307.2kHz) is reduced, proportionally.
Once the external oscillator frequency is increased above
1MHz(amorethan3xincreaseinoutputrate)theeffective-
ness of internal auto calibration circuits begins to degrade.
This results in larger offset errors, full-scale errors, and
decreased resolution, as seen in Figures 30-37.
Figure 27. Input Normal Mode Rejection 2x Speed Mode
Figure 28. Input Normal Mode Rejection 2x Speed Mode
applications inForMation
INPUT SIGNAL FREQUENCY (fN)
INPUT
NORMAL
REJECTION
(dB)
2499 F27
0
–20
–40
–60
–80
–100
–120
0
fN 2fN 3fN 4fN 5fN 6fN 7fN 8fN
INPUT SIGNAL FREQUENCY (fN)
INPUT
NORMAL
REJECTION
(dB)
2499 F28
0
–20
–40
–60
–80
–100
–120
250
248
252 254 256 258 260 262 264
相關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 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| 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 - 模數轉換器 (ADC) 系列:Easy Drive™, QuikEval™ 產品培訓模塊:Obsolescence Mitigation Program 標準包裝:1 系列:- ADC 的數量:1 位數:12 采樣率（每秒）:94.4k 數據接口:USB 輸入范圍:±VREF/2 在以下條件下的電源（標準）:- 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 - 模數轉換器 (ADC) 系列:Easy Drive™, QuikEval™ 產品培訓模塊:Obsolescence Mitigation Program 標準包裝:1 系列:- ADC 的數量:1 位數:12 采樣率（每秒）:94.4k 數據接口:USB 輸入范圍:±VREF/2 在以下條件下的電源（標準）:- 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:- 標準包裝:1 系列:- 主要目的:數字電位器 嵌入式:- 已用 IC / 零件:AD5258 主要屬性:- 次要屬性:- 已供物品:板 相關產品: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:- 標準包裝:1 系列:- 主要目的:數字電位器 嵌入式:- 已用 IC / 零件:AD5258 主要屬性:- 次要屬性:- 已供物品:板 相關產品: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。