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參數(shù)資料
| 型號(hào)： | ADS7811 |
| 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(yè)數(shù)： | 4/9頁(yè) |
| 文件大小： | 186K |
| 代理商： | ADS7811 |
4
ADS7811
PIN #
NAME
DESCRIPTION
1
2
3
V
IN
GND
REF
Analog Input. Full-scale input range is
±
2.5V.
Ground.
Reference Input/Output. Outputs internal reference of +2.5V nominal. Can also be driven by external system reference. In
both cases, connect to ground with a 0.1
μ
F ceramic capacitor in parallel with 2.2
μ
F tantalum capacitor.
Reference compensation capacitor. Use a parallel combination of a 0.1
μ
F ceramic capacitor and a 2.2
μ
F tantalum capacitor.
Ground.
Data Bit 15. Most Significant Bit (MSB) of conversion results. Hi-Z state when CS is HIGH, when R/C is LOW or when a
conversion is in progress.
Data Bit 14. Hi-Z state when CS is HIGH, when R/C is LOW or when a conversion is in progress.
Data Bit 13. Hi-Z state when CS is HIGH, when R/C is LOW or when a conversion is in progress.
Data Bit 12. Hi-Z state when CS is HIGH, when R/C is LOW or when a conversion is in progress.
Data Bit 11. Hi-Z state when CS is HIGH, when R/C is LOW or when a conversion is in progress.
Data Bit 10. Hi-Z state when CS is HIGH, when R/C is LOW or when a conversion is in progress.
Data Bit 9. Hi-Z state when CS is HIGH, when R/C is LOW or when a conversion is in progress.
Data Bit 8. Hi-Z state when CS is HIGH, when R/C is LOW or when a conversion is in progress.
Ground.
Data Bit 7. Hi-Z state when CS is HIGH, when R/C is LOW or when a conversion is in progress.
Data Bit 6. Hi-Z state when CS is HIGH, when R/C is LOW or when a conversion is in progress.
Data Bit 5. Hi-Z state when CS is HIGH, when R/C is LOW or when a conversion is in progress.
Data Bit 4. Hi-Z state when CS is HIGH, when R/C is LOW or when a conversion is in progress.
Data Bit 3. Hi-Z state when CS is HIGH, when R/C is LOW or when a conversion is in progress.
Data Bit 2. Hi-Z state when CS is HIGH, when R/C is LOW or when a conversion is in progress.
Data Bit 1. Hi-Z state when CS is HIGH, when R/C is LOW or when a conversion is in progress.
Data Bit 0. Least Significant Bit (LSB) of conversion results. Hi-Z state when CS is HIGH, when R/C is LOW or when a
conversion is in progress.
Negative supply input. Nominally –5V. Decouple to analog ground with 0.1
μ
F ceramic and 10
μ
F tantalum capacitors.
Read/convert input. With R/C HIGH, CS going LOW will enable the output data bits if a conversion is not in progress. With
R/C LOW, CS going LOW will start a conversion if one is not already in progress.
Chip select. With R/C LOW, CS going LOW will initiate a conversion if one is not already in progress. With R/C HIGH, CS
going LOW will enable the output data bits if a conversion is not in progress.
Busy output. Falls when a conversion is started, and remains LOW until the conversion is completed. With CS LOW and
R/C HIGH, output data will be valid when BUSY rises, so that the rising edge can be used to latch the data. CS or R/C must
be HIGH within 250ns after BUSY rises or another conversion will start without time for signal acquisition.
Positive supply input. Nominally +5V. Connect directly to pin 28.
Positive supply input. Nominally +5V. Connect directly to pin 27. Decouple to ground with 0.1
μ
F ceramic and 10
μ
F
tantalum capacitors.
4
5
6
CAP
GND
D15 (MSB)
7
8
9
D14
D13
D12
D11
D10
D9
D8
GND
D7
D6
D5
D4
D3
D2
D1
D0 (LSB)
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
–V
S
R/C
25
CS
26
BUSY
27
28
+V
S
+V
S
TABLE I. Pin Assignments.
PIN CONFIGURATION
Top View
SOIC
+V
S
+V
S
BUSY
CS
R/C
–V
S
D0 (LSB)
D1
D2
D3
D4
D5
D6
D7
V
IN
GND
REF
CAP
GND
D15 (MSB)
D14
D13
D12
D11
D10
D9
D8
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
ADS7811
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADS7811U | 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 |
| ADS7811U | 制造商:Texas Instruments 功能描述:Analog-Digital Converter IC Number of Bi |
| ADS7811U/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 |
| ADS7811U/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 |
| ADS7811U/1KG4 | 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 |
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