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參數資料
| 型號： | AD7994BRU-0 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | ADC |
| 英文描述： | 4-Channel, 12-/10-Bit ADCs with I2C Compatible Interface in 16-Lead TSSOP |
| 中文描述： | 4-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO16 |
| 封裝： | MO-153-AB, TSSOP-16 |
| 文件頁數： | 22/27頁 |
| 文件大小： | 277K |
| 代理商： | AD7994BRU-0 |
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AD7994/AD7993
–22–
REV. PrF
PRELIMINARY TECHNICAL DATA
Figure 11. Single Byte Write Sequence
Figure 12. Two Byte Write Sequence
READING DATA FROM THE AD7994/AD7993
Reading data from the AD7994/AD7993 is a one or two
byte operation. Reading back the contents of the Configu-
ration Register, Alert Status Register or the Cycle Timer
Register is a single byte read operation as shown in Figure
13. This assumes the particular register address has previ-
ously been set up by a single byte write operation to the
Address Pointer Register, Figure 10. Once the register
SDA
ACK. BY
AD7994/3
START BY
MASTER
FRAME 1
SERIAL BUS ADDRESS BYTE
FRAME 2
ADDRESS POINTER REGISTER BYTE
ACK. BY
AD7994/3
1
9
1
9
C4
C3
C2
P2
P1
P0
R/
A0
A1
A2
A3
0
0
SCL
1
C1
P3
9
1
9
D7
D6
D5
D2
D1
D0
D4
D3
STOP BY
MASTER
ACK. BY
AD7994/3
FRAME 3
DATA BYTE
SCL (CONTINUED)
SDA (CONTINUED)
SDA
ACK. BY
AD7994/3
START BY
MASTER
FRAME 1
SERIAL BUS ADDRESS BYTE
FRAME 2
ADDRESS POINTER REGISTER BYTE
ACK. BY
AD7994/3
1
9
1
9
C4
C3
C2
P2
P1
P0
R/
A0
A1
A2
A3
0
0
SCL
1
C1
P3
9
1
9
D7
D6
D5
D2
D1/0
D0/0
D4
D3
STOP BY
MASTER
ACK. BY
AD7994/3
LEAST SIGNIFICANT DATA BYTE
SCL (CONTINUED)
SDA (CONTINUED)
9
1
0
0
0
D10
D9
D8
0
D11
STOP BY
MASTER
ACK. BY
AD7994/3
MOST SIGNIFICANT DATA BYTE
address has been set up, any number of reads can subse-
quently be performed from that particular register without
having to write to the Address Pointer Register again. If a
read from a different register is required, then the relevant
register address will have to be written to the Address
Pointer Register and again any number of reads from this
register may then be performed.
Reading data from the Conversion Result Register,
DATA
HIGH
Registers, DATA
LOW
Registers or Hysteresis
Registers is a two byte operation as shown in Figure 14.
The same rules apply for a two byte read as a single byte
read.
If the master is write addressing the AD7994/AD7993 and
wishes to write to more than one register, then after the
first write operation has completed for the first data regis-
ter in the next byte they can simply write to the address
pointer byte to select the next data register for a write
operation. This eliminates the need to re-address the de-
vice in order to write to another data register.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| AD7994BRU-0REEL | 功能描述:IC ADC 12BIT 4CHAN I2C 16TSSOP 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:16 采樣率（每秒）:45k 數據接口:串行 轉換器數目:2 功率耗散（最大）:315mW 電壓電源:模擬和數字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數目和類型:2 個單端，單極 |
| AD7994BRU-1 | 制造商:Analog Devices 功能描述:ADC Single SAR 188ksps 12-bit Serial 16-Pin TSSOP 制造商:Rochester Electronics LLC 功能描述: |
| AD7994BRU-1REEL | 制造商:Analog Devices 功能描述:ADC Single SAR 188ksps 12-bit Serial 16-Pin TSSOP T/R |
| AD7994BRUZ0 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Analog Devices 功能描述: |
| AD7994BRUZ-0 | 功能描述:IC ADC 12BIT 4CHAN I2C 16TSSOP RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 標準包裝:1 系列:microPOWER™ 位數:8 采樣率（每秒）:1M 數據接口:串行，SPI? 轉換器數目:1 功率耗散（最大）:- 電壓電源:模擬和數字 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤 供應商設備封裝:24-VQFN 裸露焊盤（4x4） 包裝:Digi-Reel® 輸入數目和類型:8 個單端，單極 產品目錄頁面:892 (CN2011-ZH PDF) 其它名稱:296-25851-6 |
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