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參數(shù)資料
| 型號： | DC951A |
| 廠商： | Linear Technology |
| 文件頁數(shù)： | 4/40頁 |
| 文件大?。?/td> | 0K |
| 描述： | BOARD DELTA SIGMA ADC LTC2481 |
| 軟件下載： | QuikEval System |
| 設計資源： | DC951A Design File DC951A Schematic |
| 標準包裝： | 1 |
| 系列： | Easy Drive™, QuikEval™ |
| ADC 的數(shù)量： | 1 |
| 位數(shù)： | 16 |
| 采樣率（每秒）： | 7.5 |
| 數(shù)據(jù)接口： | I²C，串行，SPI? |
| 工作溫度： | 0°C ~ 70°C |
| 已用 IC / 零件： | LTC2481 |
| 已供物品： | 板 |
| 相關產(chǎn)品： | LTC2481HDD#TRPBF-ND - IC ADC DELTA SIGMA 16BIT 10DFN LTC2481HDD#PBF-ND - IC ADC 16BIT I2C 7.5SPS 10DFN LTC2481CDD#TRPBF-ND - IC ADC 16BIT I2C 10-DFN LTC2481IDD#TRPBF-ND - IC ADC 16BIT I2C 10-DFN LTC2481IDD#PBF-ND - IC ADC 16BIT I2C 10-DFN LTC2481CDD#PBF-ND - IC ADC 16BIT I2C 10-DFN |
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LTC2481
12
2481fc
CONVERTER OPERATION
Converter Operation Cycle
The LTC2481 is a low power,
ΔΣanalog-to-digitalconverter
with an I2C interface. After power on reset, its operation
is made up of three states. The converter operating cycle
begins with the conversion, followed by the low power sleep
state and ends with the data output/input (see Figure 1).
The device will not acknowledge an external request during
the conversion state. After a conversion is nished, the
device is ready to accept a read/write request. Once the
LTC2481isaddressedforareadoperation,thedevicebegins
outputting the conversion result under control of the serial
clock (SCL). There is no latency in the conversion result.
The data output is 24 bits long and contains a 16-bit plus
sign conversion result plus a readback of the conguration
bits corresponds to the conversion just performed. This
result is shifted out on the SDA pin under the control of the
SCL. Data is updated on the falling edges of SCL allowing
the user to reliably latch data on the rising edge of SCL.
In write operation, the device accepts one conguration
byte and the data is shifted in on the rising edges of the
SCL. A new conversion is initiated by a STOP condition
following a valid write operation or at the conclusion of a
data read operation (read out all 24 bits).
I2C INTERFACE
The LTC2481 communicates through an I2C interface. The
I2C interface is a 2-wire open-drain interface supporting
multiple devices and masters on a single bus. The
connected devices can only pull the bus wires LOW and
can never drive the bus HIGH. The bus wires are externally
connected to a positive supply voltage via a current-
source or pull-up resistor. When the bus is free, both
lines are HIGH. Data on the I2C-bus can be transferred
at rates of up to 100kbit/s in the Standard-mode and up
to 400kbit/s in the Fast-mode. The VCC power should not
be removed from the device when the I2C bus is active to
avoid loading the I2C bus lines through the internal ESD
protection diodes.
Each device on the I2C bus is recognized by a unique
address stored in that device and can operate as either
a transmitter or receiver, depending on the function of
the device. In addition to transmitters and receivers,
devices can also be considered as masters or slaves when
performing data transfers. A master is the device which
initiates a data transfer on the bus and generates the clock
signals to permit that transfer. At the same time any device
addressed is considered a slave.
APPLICATIONS INFORMATION
Initially, the LTC2481 performs a conversion. Once the
conversion is complete, the device enters the sleep state.
While in this sleep state, power consumption is reduced
by two orders of magnitude. The part remains in the sleep
state as long as it is not addressed for a read/write opera-
tion. The conversion result is held indenitely in a static
shift register while the converter is in the sleep state.
Figure 1. LTC2481 State Transition Diagram
CONVERSION
POWER ON RESET
DEFAULT CONFIGURATION:
EXTERNAL INPUT GAIN = 1
50/60Hz REJECTION
1X SPEED, AUTOCAL
SLEEP
2481 F01
YES
NO
ACKNOWLEDGE
YES
NO
STOP
OR READ
24-BITS
DATA OUTPUT/INPUT
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| DC955A | 功能描述:BOARD DELTA SIGMA ADC LTC2483 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 |
| DC956A | 功能描述:BOARD DELTA SIGMA ADC LTC2485 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 |
| DC959A | 制造商:Linear Technology 功能描述:BOARD DEMO LTC4257-1 制造商:Linear Technology 功能描述:EVAL BOARD, LTC4257CDD-1 POE |
| DC95F103V | 功能描述:熱敏電阻 - NTC 10KOhms +-.1C Epoxy Coated RoHS:否 制造商:EPCOS 電阻:10 kOhms 功率額定值:150 mW 容差:2 % 端接類型:Radial 系列:B57703M 工作溫度范圍:- 55 C to + 125 C |
| DC95F103VN | 制造商:GE Sensing & Inspection Technologies 功能描述:Thermistor;10;PCB Mount Mtg. Type;1.5In Lead;Bare Tinned Copper 制造商:GE Measurement & Control 功能描述:+/-.1oC (0oC - 70oC) Interchangeable Chip |
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