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參數資料
| 型號： | AD7679 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | 18-Bit, 2.5 LSB INL, 570 kSPS SAR ADC |
| 中文描述： | 18位，2.5 LSB INL和570 kSPS的SAR型ADC |
| 文件頁數： | 10/28頁 |
| 文件大小： | 1186K |
| 代理商： | AD7679 |
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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
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相關代理商/技術參數 |
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|---|---|
| AD7679ACP | 制造商:Analog Devices 功能描述:ADC Single SAR 570ksps 18-bit Parallel/Serial 48-Pin LFCSP EP 制造商:Analog Devices 功能描述:18BIT SAR ADC SMD 7679 LFSCP-48 |
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| AD7679ACPZ | 功能描述:IC ADC 18BIT SAR W/BUFF 48LFCSP 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 |
| AD7679ACPZRL | 功能描述:IC ADC 18BIT SAR W/BUFF 48LFCSP 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 |
| AD7679AST | 制造商:Analog Devices 功能描述:ADC Single SAR 570ksps 18-bit Parallel/Serial 48-Pin LQFP 制造商:Analog Devices 功能描述:18BIT SAR ADC SMD 7679 LQFP48 |
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