- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄17033 > DC1266A-A (Linear Technology)BOARD DELTA SIGMA ADC LTC2453 PDF資料下載
參數(shù)資料
| 型號： | DC1266A-A |
| 廠商： | Linear Technology |
| 文件頁數(shù)： | 18/18頁 |
| 文件大小： | 0K |
| 描述： | BOARD DELTA SIGMA ADC LTC2453 |
| 軟件下載： | QuikEval System |
| 設(shè)計資源： | DC1266A Design File DC1266A Schematic |
| 標準包裝： | 1 |
| 系列： | QuikEval™ |
| ADC 的數(shù)量： | 2 |
| 位數(shù)： | 16 |
| 采樣率（每秒）： | 60 |
| 數(shù)據(jù)接口： | I²C，串行 |
| 輸入范圍： | ±VREF |
| 已用 IC / 零件： | LTC2453 |
| 已供物品： | 板 |
| 相關(guān)產(chǎn)品： | LTC2453ITS8#TRPBF-ND - IC ADC 16BIT DELTA SIG TSOT23-8 LTC2453ITS8#TRMPBFTR-ND - IC ADC 16BIT DELTA SIG TSOT23-8 LTC2453CTS8#TRPBF-ND - IC ADC 16BIT DELTA SIG TSOT23-8 LTC2453CTS8#TRMPBFTR-ND - IC ADC 16BIT DELTA SIG TSOT23-8 LTC2453IDDB#TRPBF-ND - IC ADC 16BIT DELTA SIG 8-DFN LTC2453IDDB#TRMPBFTR-ND - IC ADC 16BIT DELTA SIG 8-DFN LTC2453CDDB#TRPBF-ND - IC ADC 16BIT DELTA SIG 8-DFN LTC2453CDDB#TRMPBFTR-ND - IC ADC 16BIT DELTA SIG 8-DFN |
LTC2453
9
2453fc
START timing is functionally identical to the START and
is used for reading from the device before the initiation
of a new conversion.
Data Transferring
After the START condition, the I2C bus is busy and data
transfer can begin between the master and the addressed
slave. Data is transferred over the bus in groups of nine
bits, one byte followed by one acknowledge (ACK) bit. The
master releases the SDA line during the ninth SCL clock
cycle. The slave device can issue an ACK by pulling SDA
LOW or issue a Not Acknowledge (NAK) by leaving the
SDA line HIGH impedance (the external pull-up resistor
will hold the line HIGH). Change of data only occurs while
the clock line (SCL) is LOW.
Data Format
After a START condition, the master sends a 7-bit address
followed by a read request (R) bit. The bit R is 1 for a
Read Request. If the 7-bit address matches the LTC2453’s
address (hard-wired at 0010100) the ADC is selected.
When the device is addressed during the conversion
state, it does not accept the request and issues a NAK by
leaving the SDA line HIGH. If the conversion is complete,
the LTC2453 issues an ACK by pulling the SDA line LOW.
Following the ACK, the LTC2453 can output data. The data
output stream is 16 bits long and is shifted out on the
falling edges of SCL (see Figure 4). The first bit output by
the LTC2453, the MSB, is the sign, which is 1 for VIN+ ≥
VIN– and 0 for VIN+ < VIN– (see Table 1). The MSB (D15) is
followedbysuccessivelylesssignificantbits(D14,D13…)
until the LSB is output by the LTC2453. This sequence is
shown in Figure 5.
OPERATION SEQUENCE
Continuous Read
Conversions from the LTC2453 can be continuously
read, see Figure 6. At the end of a read operation, a new
conversion automatically begins. At the conclusion of
the conversion cycle, the next result may be read using
the method described above. If the conversion cycle is
not complete and a valid address selects the device, the
LTC2453 generates a NAK signal indicating the conversion
cycle is in progress.
Discarding a Conversion Result and Initiating a New
Conversion
It is possible to start a new conversion without reading
the old result, as shown in Figure 7. Following a valid 7-bit
address, a read request (R) bit, and a valid ACK, a STOP
command will start a new conversion.
PRESERVING THE CONVERTER ACCURACY
TheLTC2453isdesignedtodramaticallyreducetheconver-
sion result’s sensitivity to device decoupling, PCB layout,
antialiasing circuits, line and frequency perturbations.
Nevertheless, in order to preserve the high accuracy capa-
bility of this part, some simple precautions are desirable.
Digital Signal Levels
Due to the nature of CMOS logic, it is advisable to keep
input digital signals near GND or VCC. Voltages in the
range of 0.5V to VCC – 0.5V may result in additional cur-
rent leakage from the part.
SDA
SCL
S
Sr
P
S
tHD(STA)
tHD(DAT)
tSU(STA)
tSU(STO)
tSU(DAT)
tLOW
tHD(SDA)
tSP
tBUF
tr
tf
tr
tf
tHIGH
2453 F03
Figure 3. Definition of Timing for Fast/Standard Mode Devices on the I2C Bus
APPLICATIONS INFORMATION
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DC1067A-B | BOARD DELTA SIGMA ADC LTC2450-1 |
| ECM25DCCH | CONN EDGECARD 50POS R/A .156 SLD |
| EBM28DRTI | CONN EDGECARD 56POS DIP .156 SLD |
| ECM25DCCD | CONN EDGECARD 50POS R/A .156 SLD |
| ECM25DCBN | CONN EDGECARD 50POS R/A .156 SLD |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DC126BYFVR | 制造商:Texas Instruments 功能描述: |
| DC1274A | 功能描述:BOARD DEMO LTM8040 RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - LED 驅(qū)動器 系列:µModule® 標準包裝:1 系列:PowerWise® 電流 - 輸出 / 通道:20mA 輸出及類型:1，非隔離 輸出電壓:17V 特點:可調(diào)光 輸入電壓:2.7 ~ 5.5 V 已供物品:板 已用 IC / 零件:LM3508 相關(guān)產(chǎn)品:LM3508TLX-ND - IC LED DRVR WHT BCKLGT 9USMDLM3508TLDKR-ND - IC LED DRVR WHT BCKLGT 9MICROSMDLM3508TLCT-ND - IC LED DRVR WHT BCKLGT 9MICROSMDLM3508TLTR-ND - IC LED DRVR WHT BCKLGT 9MICROSMD |
| DC1278A | 功能描述:BOARD SAR ADC LTC2351-14 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-II™ 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 |
| DC1280A | 制造商:Linear Technology 功能描述:EVAL BOARD, LT3471 BOOST / INVERTING REG 制造商:Linear Technology 功能描述:EVAL BOARD, LT3471 BOOST / INVERTING REG; Silicon Manufacturer:Linear Technology; Silicon Core Number:LT3471; Kit Application Type:Power Management; Kit Contents:Evaluation Board for LT3471; Length:40mm |
| DC1281A-A | 制造商:Linear Technology 功能描述:BOARD DEMO 16BIT 160MSPS LTC2209 制造商:Linear Technology 功能描述:16BIT ADC Eval Brd, Rq. DC1371 制造商:Linear Technology 功能描述:16BIT ADC Eval Brd, Rq. DC1371, Silicon Manufacturer:Linear Technology, Silicon Core Number:LTC2209UP, Kit Application Type:Data Converter, Application Sub Type:ADC, Kit Contents:Board, Guide, Features:Also works with requred DC1371 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。