- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄362802 > EVAL-AD7731EB (Analog Devices, Inc.) Low Noise, High Throughput 24-Bit Sigma-Delta ADC PDF資料下載
參數(shù)資料
| 型號： | EVAL-AD7731EB |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Low Noise, High Throughput 24-Bit Sigma-Delta ADC |
| 中文描述： | 低噪聲，高吞吐量的24位Σ-Δ模數(shù)轉(zhuǎn)換器 |
| 文件頁數(shù)： | 15/44頁 |
| 文件大?。?/td> | 411K |
| 代理商： | EVAL-AD7731EB |
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頁當(dāng)前第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
AD7731
–15–
REV. 0
Data Register (RS2-RS0 = 0, 0, 1); Power On/Reset Status: 000000 Hex
T he Data Register on the part is a read-only register that contains the most up-to-date conversion result from the AD7731. Figure 5
shows a flowchart for reading from the registers on the AD7731. T he register can be programmed to be either 16 or 24 bits wide,
determined by the status of the WL bit of the Mode Register. T he
RDY
output and
RDY
bit of the Status Register are set low when
the Data Register is updated. T he
RDY
pin and
RDY
bit will return high once the full contents of the register (either 16 or 24 bits)
have been read. If the Data Register has not been read by the time the next output update occurs, the
RDY
pin and
RDY
bit will go
high for at least 158.5
×
t
CLK IN
indicating when a read from the Data Register should not be initiated to avoid a transfer from the
Data Register as it is being updated. Once the updating of the Data Register has taken place,
RDY
returns low.
If the Communications Register data sets up the part for a write operation to this register, a write operation must actually take place
in order to return the part to where it is expecting a write operation to the Communications Register (the default state of the inter-
face). However, the 16 or 24 bits of data written to the part will be ignored by the AD7731.
Mode Register (RS2-RS0 = 0, 1, 0); Power-On/Reset Status: 0174 Hex
T he Mode Register is a 16-bit register from which data can either be read or to which data can be written. T his register configures
the operating modes of the AD7731, the input range selection, the channel selection and the word length of the Data Register. T ableX
outlines the bit designations for the Mode Register. MR0 through MR15 indicate the bit location, MR denoting the bits are in the
Mode Register. MR15 denotes the first bit of the data stream. T he number in brackets indicates the power-on/reset default status of
that bit. Figure 5 shows a flowchart for reading from the registers on the AD7731 and Figure 6 shows a flowchart for writing to the
registers on the part.
T able X . Mode Register
5
1
R
M
4
1
R
M
3
1
R
M
2
1
R
M
1
1
R
M
0
1
R
M
9
R
M
8
R
M
)
(
2
D
M
)
(
1
D
M
)
(
0
D
M
B
)
(
U
/
)
(
N
E
D
)
(
1
D
)
(
0
D
)
(
L
W
7
R
M
6
R
M
5
R
M
4
R
M
3
R
M
2
R
M
1
R
M
0
R
M
)
(
F
E
R
I
H
)
(
2
N
R
)
(
1
N
R
)
(
0
N
R
)
(
O
B
)
(
2
H
C
)
(
1
H
C
)
(
0
H
C
Bit
Location
Bit
Mnemonic
Description
MR15–MR13
MD2–MD0
Mode Bits. T hese three bits determine the mode of operation of the AD7731 as outlined in
T able X I. T he modes are independent, such that writing new mode bits to the Mode Regis-
ter will exit the part from the mode in which it is operating and place it in the new requested
mode immediately after the Mode Register write. T he function of the mode bits is described
in more detail below.
T able X I. Operating Modes
MD2
MD1
MD0
Mode of Operation
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
Sync (Idle) Mode
Continuous Conversion Mode
Single Conversion Mode
Power-Down (Standby) Mode
Internal Zero-Scale Calibration
Internal Full-Scale Calibration
System Zero-Scale Calibration
System Full-Scale Calibration
Power-On/Reset Default
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| EVAL-AD7751EB | Energy Metering IC With On-Chip Fault Detection |
| EVAL-AD7755EB | Energy Metering IC with Pulse Output |
| EVAL-AD7783EB | Read-Only, Pin Configured 24-Bit ADC with Excitation Current Sources |
| EVAL-AD7843CB | Touch Screen Digitizer |
| EVAL-AD7851CB | 14-Bit 333 kSPS Serial A/D Converter |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| EVAL-AD7731EBZ | 功能描述:BOARD EVALUATION FOR AD7731 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:- 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 |
| EVAL-AD7732EB | 制造商:Analog Devices 功能描述:2-CHANNEL, ??10 V INPUT RANGE, HIGH THROUGHPUT, 24-BIT ADC |
| EVAL-AD7732EBZ | 功能描述:BOARD EVAL FOR AD7732 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:- 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 |
| EVAL-AD7734EBZ | 功能描述:BOARD EVALUATION FOR AD7734 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:- 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 |
| EVAL-AD7738EB | 制造商:Analog Devices 功能描述:Evaluation Board For AD7738 ADC 制造商:Analog Devices 功能描述:EVALUATION BOARD I.C. - Bulk |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。