- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄17061 > DC571A (Linear Technology)BOARD DELTA SIGMA ADC LTC2418 PDF資料下載
參數(shù)資料
| 型號： | DC571A |
| 廠商： | Linear Technology |
| 文件頁數(shù)： | 5/48頁 |
| 文件大?。?/td> | 0K |
| 描述： | BOARD DELTA SIGMA ADC LTC2418 |
| 軟件下載： | QuikEval System |
| 設(shè)計資源： | DC571A Design File DC571A Schematic |
| 標準包裝： | 1 |
| 系列： | QuikEval™ |
| ADC 的數(shù)量： | 1 |
| 位數(shù)： | 24 |
| 采樣率（每秒）： | 7.5 |
| 數(shù)據(jù)接口： | MICROWIRE?，串行，SPI? |
| 工作溫度： | 0°C ~ 70°C |
| 已用 IC / 零件： | LTC2418 |
| 已供物品： | 板 |
| 相關(guān)產(chǎn)品： | DC590B-ND - BOARD DEMO USB SERIAL CONTROLLER LTC2418IGN#PBF-ND - IC ADC 24BIT DIFF INPUT 28SSOP LTC2418CGN#TRPBF-ND - IC ADC 24BIT DIFF INPUT 28SSOP LTC2418IGN#TRPBF-ND - IC ADC 24BIT DIFF INPUT 28SSOP LTC2418CGN#PBF-ND - IC ADC 24BIT DIFF INPUT 28SSOP LTC2418CGN-ND - IC ADC 24BIT DIFF INPUT 28SSOP LTC2418IGNTR-ND - IC ADC 24BIT DIFF INPUT 28SSOP LTC2418IGN-ND - IC ADC 24BIT DIFF INPUT 28SSOP LTC2418CGNTR-ND - IC ADC 24BIT DIFF INPUT 28SSOP |
第1頁第2頁第3頁第4頁當前第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
13
241418fa
specification for the REF+ and REF– pins covers the entire
range from GND to VCC. For correct converter operation,
the REF+ pin must always be more positive than the REF–
pin.
The LTC2414/LTC2418 can accept a differential reference
voltage from 0.1V to VCC. The converter output noise is
determined by the thermal noise of the front-end circuits,
and, as such, its value in nanovolts is nearly constant with
reference voltage. A decrease in reference voltage will not
significantly improve the converter’s effective resolution.
On the other hand, a reduced reference voltage will im-
prove the converter’s overall INL performance. A reduced
reference voltage will also improve the converter perfor-
mance when operated with an external conversion clock
(external FOsignal)atsubstantiallyhigheroutputdatarates.
Input Voltage Range
The two selected pins are labeled IN+ and IN– (see Tables
1 and 2). Once selected (either differential or single-ended
multiplexing mode), the analog input is differential with a
common mode range for the IN+ and IN– input pins ex-
tending from GND – 0.3V to VCC + 0.3V. Outside
these limits, the ESD protection devices begin to turn on
and the errors due to input leakage current increase rap-
idly. Within these limits, the LTC2414/LTC2418 convert
the bipolar differential input signal, VIN = IN+ – IN–, from
– FS = – 0.5 VREF to +FS = 0.5 VREF where VREF =
REF+ – REF –. Outside this range the converters indicate
the overrange or the underrange condition using distinct
output codes.
Input signals applied to IN+ and IN– pins may extend
300mV below ground or above VCC. In order to limit any
fault current, resistors of up to 5k may be added in series
with the IN+ or IN– pins without affecting the performance
of the device. In the physical layout, it is important to
maintain the parasitic capacitance of the connection be-
tween these series resistors and the corresponding pins
as low as possible; therefore, the resistors should be
located as close as practical to the pins. In addition, series
resistors will introduce a temperature dependent offset
error due to the input leakage current. A 1nA input leakage
current will develop a 1ppm offset error on a 5k resistor if
VREF = 5V. This error has a very strong temperature
dependency.
Input Data Format
When the LTC2414/LTC2418 are powered up, the default
selection used for the first conversion is IN+ = CH0 and IN–
= CH1 (Address = 00000). In the data input/output mode
following the first conversion, a channel selection can be
updated using an 8-bit word. The LTC2414/LTC2418
serial input data is clocked into the SDI pin on the rising
edge of SCK (see Figure 3). The input is composed of an
8-bit word with the first 3 bits acting as control bits and the
remaining 5 bits as the channel address bits.
The first 2 bits are always 10 for proper updating opera-
tion. The third bit is EN. For EN = 1, the following 5 bits are
used to update the input channel selection. For EN = 0,
previous channel selection is kept and the following bits
are ignored. Therefore, the address is updated when the 3
control bits are 101 and kept for 100. Alternatively, the 3
control bits can be all zero to keep the previous address.
This alternation is intended to simplify the SDI interface
allowing the user to simply connect SDI to ground if no
update is needed. Combinations other than 101, 100 and
000 of the 3 control bits should be avoided.
When update operation is set (101), the following 5 bits
are the channel address. The first bit, SGL, decides if the
differential selection mode (SGL = 0) or the single-ended
selection mode is used (SGL = 1). For SGL = 0, two
adjacent channels can be selected to form a differential
input; for SGL = 1, one of the 8 channels (CH0-CH7) for the
LTC2414 or one of the 16 channels (CH0-CH15) for the
LTC2418 is selected as the positive input and the COM pin
is used as the negative input. For the LTC2414, the lower
half channels (CH0-CH7) are used and the channel ad-
dress bit A2 should be always 0, see Table 1. While for the
LTC2418, all the 16 channels are used and the size of the
corresponding selection table (Table 2) is doubled from
that of the LTC2414 (Table 1). For a given channel selec-
tion, the converter will measure the voltage between the
two channels indicated by IN+ and IN– in the selected row
of Tables 1 or 2.
APPLICATIO S I FOR ATIO
WU
UU
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MIC2015-1.2YM6 TR | IC DISTRIBUTION SW 1.2A SOT23-6 |
| DC570A | BOARD DELTA SIGMA ADC LTC2440 |
| DC1012A-A | BOARD DELTA SIGMA ADC LTC2499 |
| DC1010A-A | BOARD DELTA SIGMA ADC LTC2493 |
| RCM15DCAH-S189 | CONN EDGECARD 30POS R/A .156 SLD |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DC57-28 | 功能描述:ANT BKHAUL 28DBI 5.7GHZ 30" NFEM RoHS:是 類別:RF/IF 和 RFID >> RF 天線 系列:* 標準包裝:1 系列:* |
| DC572A | 制造商:Linear Technology 功能描述:EVAL BOARD, LTC1592 16BIT DAC 制造商:Linear Technology 功能描述:EVAL BOARD, LTC1592 16BIT DAC; Silicon Manufacturer:Linear Technology; Silicon Core Number:LTC1592; Kit Contents:Evaluation Board for LTC1592; Features:Serial SoftSpan IOUT DAC; Length:29mm |
| DC573A | 功能描述:BOARD DELTA SIGMA ADC LTC2400 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:QuikEval™ 產(chǎn)品培訓模塊:Obsolescence Mitigation Program 標準包裝: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（標準）:- 工作溫度:-40°C ~ 85°C 已用 IC / 零件:MAX11645 已供物品:板，軟件 |
| DC575A | 功能描述:BOARD DELTA SIGMA ADC LTC2410 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:QuikEval™ 產(chǎn)品培訓模塊:Obsolescence Mitigation Program 標準包裝: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（標準）:- 工作溫度:-40°C ~ 85°C 已用 IC / 零件:MAX11645 已供物品:板，軟件 |
| DC579A | 功能描述:BOARD DAC LTC2600 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - 數(shù)模轉(zhuǎn)換器 (DAC) 系列:QuikEval™ 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:1 系列:- DAC 的數(shù)量:4 位數(shù):12 采樣率（每秒）:- 數(shù)據(jù)接口:串行，SPI? 設(shè)置時間:3µs DAC 型:電流/電壓 工作溫度:-40°C ~ 85°C 已供物品:板 已用 IC / 零件:MAX5581 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。