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參數(shù)資料
| 型號： | ADS7815U |
| 英文描述： | 16-Bit 250kHz Sampling CMOS ANALOG-to-DIGITAL CONVERTER |
| 中文描述： | 16位至250kHz采樣CMOS模擬數(shù)字轉(zhuǎn)換器 |
| 文件頁數(shù)： | 5/8頁 |
| 文件大小： | 140K |
| 代理商： | ADS7815U |
ADS7815
5
BASIC OPERATION
Figure 1 shows the recommended circuit for operation of the
ADS7815. A falling edge on the convert pulse signal places
the sample and hold into the hold mode and initiates a
conversion. When the conversion is complete, the pins D15
through D0 become active and the result of the conversion
is placed on these outputs. In the circuit shown in Figure 1,
the rising edge of BUSY latches the result into the 74HC574s.
After the conversion is complete, the ADS7815 sample and
hold returns to the sample mode and begins acquiring the
input signal for the next conversion. Allowing 4
μ
s between
falling edges of the convert pulse signal assures accurate
acquisition of the analog input.
FIGURE 1. Basic Operation.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
V
IN
GND
REF
CAP
GND
D15
D14
D13
D12
D11
D10
D9
D8
GND
28
27
26
25
24
23
22
21
20
19
18
17
16
15
+V
S
+V
S
BUSY
CS
R/C
–V
S
D0
D1
D2
D3
D4
D5
D6
D7
ADS7815
R
1
75
+5V
–5V
+
2.2μF
C
4
0.1μF
C
6
+
2.2μF
C
3
0.1μF
C
5
Convert Pulse
74HC00
100ns min
μProcessor
Bus
μProcessor
Bus
+5V
0.1μF
C
1
+
10μF
C
2
–5V
OC
0.1μF
C
7
+
10μF
C
8
2
3
4
5
6
7
8
9
1D
2D
3D
4D
5D
6D
7D
8D
1Q
2Q
3Q
4Q
5Q
6Q
7Q
8Q
1
10
OC
CLK
74HC574
2
3
4
5
6
7
8
9
1D
2D
3D
4D
5D
6D
7D
8D
1Q
2Q
3Q
4Q
5Q
6Q
7Q
8Q
1
10
OC
CLK
74HC574
R
2
10
OPA628
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADS7815U/1K | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16-Bit 250kHz Sampling CMOS RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| ADS7815U/1KE4 | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16-Bit 250kHz Sampling CMOS RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| ADS7815UE4 | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16-Bit 250kHz Sampling CMOS RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| ADS7815UG4 | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16-Bit 250kHz Sampling CMOS RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| ADS7816 | 制造商:BB 制造商全稱:BB 功能描述:12-Bit High Speed Micro Power Sampling ANALOG-TO-DIGITAL CONVERTER |
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