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參數資料
| 型號： | AD7854 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | 12-Bit Sampling ADC(單電源,200kSPS 12位采樣A/D轉換器) |
| 中文描述： | 12位采樣ADC（單電源，速度高達200ksps的12位采樣的A / D轉換器） |
| 文件頁數： | 10/28頁 |
| 文件大?。?/td> | 268K |
| 代理商： | AD7854 |
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AD7854/AD7854L
–10–
REV. 0
ST AT US RE GIST E R
T he arrangement of the status register is shown below. T he status register is a read-only register and contains 16 bits of data. T he
status register is selected by writing to the control register and putting two 1s in RDSLT 1 and RDSLT 0. T he function of the bits in
the status register are described below. T he power-up status of all bits is 0.
START
READ STATUS REGISTER
WRITE TO CONTROL REGISTER
SETTING RDSLT0 = RDSLT1 = 1
Figure 4. Flowchart for Reading the Status Register
MSB
ZERO
ZERO
ZERO
ZERO
ZERO
ZERO
PMGT 1
PMGT 0
ONE
ONE
AMODE
BUSY
CALMD
CALSLT 1
CALSLT 0
ST CAL
LSB
Status Register Bit Function Description
Bit
Mnemonic
Comment
15
14
13
12
11
10
9
8
7
6
5
ZERO
ZERO
ZERO
ZERO
ZERO
ZERO
PMGT 1
PMGT 0
ONE
ONE
AMODE
T hese six bits are always 0.
Power Management Bits. T hese bits will indicate if the part is in a power-down mode or not. See T able VI
in Power-Down Section for description.
Both these bits are always 1.
Analog Mode Bit. When this bit is a 0, the device is set up for the unipolar analog input range. When this
bit is a 1, the device is set up for the bipolar analog input range.
Conversion/Calibration Busy Bit. When this bit is 1, this indicates that there is a conversion or calibration
in progress. When this bit is 0, there is no conversion or calibration in progress.
Calibration Mode Bit. A 0 in this bit indicates a self-calibration is selected, and a 1 in this bit indicates a
system calibration is selected (see T able III).
Calibration Selection Bits and Start Calibration Bit. T he ST CAL bit is read as a 1 if a calibration is in
progress and as a 0 if there is no calibration in progress. T he CALSLT 1 and CALSLT 0 bits indicate
which of the calibration registers are addressed for reading and writing (see section on the Calibration
Registers for more details).
4
BUSY
3
CALMD
2
1
0
CALSLT 1
CALSLT 0
ST CAL
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相關代理商/技術參數 |
參數描述 |
|---|---|
| AD7854AD | 制造商:Analog Devices 功能描述: |
| AD7854AQ | 功能描述:IC ADC 12BIT PARALLEL LP 28-CDIP RoHS:否 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 標準包裝:1,000 系列:- 位數:12 采樣率（每秒）:300k 數據接口:并聯 轉換器數目:1 功率耗散（最大）:75mW 電壓電源:單電源 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數目和類型:1 個單端，單極；1 個單端，雙極 |
| AD7854AR | 功能描述:IC ADC 12BIT PARALLEL LP 28-SOIC RoHS:否 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 標準包裝:1,000 系列:- 位數:12 采樣率（每秒）:300k 數據接口:并聯 轉換器數目:1 功率耗散（最大）:75mW 電壓電源:單電源 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數目和類型:1 個單端，單極；1 個單端，雙極 |
| AD7854AR-REEL | 制造商:Analog Devices 功能描述:ADC Single SAR 200ksps 12-bit Parallel 28-Pin SOIC W T/R 制造商:Analog Devices 功能描述:ADC SGL SAR 200KSPS 12-BIT PARALLEL 28SOIC W - Tape and Reel |
| AD7854ARS | 功能描述:IC ADC 12BIT PARALLEL LP 28-SSOP RoHS:否 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 標準包裝:1,000 系列:- 位數:12 采樣率（每秒）:300k 數據接口:并聯 轉換器數目:1 功率耗散（最大）:75mW 電壓電源:單電源 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數目和類型:1 個單端，單極；1 個單端，雙極 |
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