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參數資料
型號: AD7679AST
廠商: ANALOG DEVICES INC
元件分類: ADC
英文描述: 18-Bit, 2.5 LSB INL, 570 kSPS SAR ADC
中文描述: 1-CH 18-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL/PARALLEL ACCESS, PQFP48
封裝: LOW PROFILE, MS-026BBC, LQFP-48
文件頁數: 10/28頁
文件大小: 1186K
代理商: AD7679AST
AD7679
Pin No.
35
Mnemonic
CNVST
Type
1
DI
Description
Start Conversion. If CNVST is held HIGH when the acquisition phase (t
8
) is complete, the next falling
edge on CNVST puts the internal sample/hold into the hold state and initiates a conversion. If CNVST
is held LOW when the acquisition phase is complete, the internal sample/hold is put into the hold
state and a conversion is started immediately.
Must Be Tied to Analog Ground.
Reference Input Voltage and Internal Reference Buffer Output. Apply an external reference on this pin
if the internal reference buffer is not used. Should be decoupled effectively with or without the
internal buffer.
Reference Input Analog Ground.
Differential Negative Analog Input.
Differential Positive Analog Input.
Reference Buffer Input Voltage. The internal reference buffer has a fixed gain. It outputs 4.096 V
typically when 2.5 V is applied on this pin.
Allows Choice of Buffering Reference. When LOW, buffer is selected. When HIGH, buffer is
switched off.
36
37
AGND
REF
P
AI
38
39
43
46
REFGND
IN–
IN+
REFBUFIN
AI
AI
AI
AI
48
PDBUF
DI
1
AI = Analog Input; AO = Analog Output; DI = Digital Input; DI/O = Bidirectional Digital; DO = Digital Output; P = Power.
Table 7. Data Bus Interface Definitions
MODE
MODE1
MODE0
D0/OB/2C
D1/A0
0
0
0
R[0]
R[1]
1
0
1
OB/2C
A0:0
1
0
1
OB/2C
A0:1
2
1
0
OB/2C
A0:0
2
1
0
OB/2C
A0:0
2
1
0
OB/2C
A0:1
2
1
0
OB/2C
A0:1
3
1
1
OB/2C
R[0:17] is the 18-bit ADC value stored in its output register.
D2/A1
R[2]
R[2]
R[0]
A1:0
A1:1
A1:0
A1:1
All Hi-Z
D[3]
R[3]
R[3]
R[1]
D[4:9]
R[4:9]
R[4:9]
D[10:11]
R[10:11]
R[10:11]
D[12:15]
R[12:15]
R[12:15]
All Zeros
R[12:15]
R[4:7]
D[16:17]
R[16:17]
R[16:17]
Description
18-Bit Parallel
16-Bit High Word
16-Bit Low Word
8-Bit HIGH Byte
8-Bit MID Byte
8-Bit LOW Byte
8-Bit LOW Byte
Serial Interface
All Hi-Z
All Hi-Z
All Hi-Z
All Hi-Z
R[10:11]
R[2:3]
R[0:1]
R[16:17]
R[8:9]
All Zeros
All Zeros
Serial Interface
R[0:1]
Rev. 0 | Page 10 of 28
相關PDF資料
PDF描述
AD7679ASTRL 18-Bit, 2.5 LSB INL, 570 kSPS SAR ADC
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相關代理商/技術參數
參數描述
AD7679ASTRL 制造商:Analog Devices 功能描述:ADC Single SAR 570ksps 18-bit Parallel/Serial 48-Pin LQFP T/R 制造商:Analog Devices 功能描述:ADC SGL SAR 570KSPS 18BIT PARALLEL/SERL 48LQFP - Tape and Reel
AD7679ASTZ 功能描述:IC ADC 18BIT 570KSPS 48-LQFP RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:PulSAR® 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
AD7679ASTZ 制造商:Analog Devices 功能描述:IC 18-BIT ADC
AD7679ASTZRL 功能描述:IC ADC 18BIT SAR W/BUFF 48LQFP RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:PulSAR® 標準包裝:1 系列:- 位數:14 采樣率(每秒):83k 數據接口:串行,并聯 轉換器數目:1 功率耗散(最大):95mW 電壓電源:雙 ± 工作溫度:0°C ~ 70°C 安裝類型:通孔 封裝/外殼:28-DIP(0.600",15.24mm) 供應商設備封裝:28-PDIP 包裝:管件 輸入數目和類型:1 個單端,雙極
AD7679CB1 制造商:AD 制造商全稱:Analog Devices 功能描述:18-Bit, 2.5 LSB INL, 570 kSPS SAR ADC
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