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參數(shù)資料
| 型號(hào)： | ADS1000A0IDBVTG4 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | LOW POWER, 12-Bit ANALOG-TO-DIGITAL CONVERTER with I2C⑩ INTERFACE |
| 中文描述： | 低功耗，12位模擬數(shù)字轉(zhuǎn)換接口的I2C⑩ |
| 文件頁(yè)數(shù)： | 9/17頁(yè) |
| 文件大?。?/td> | 240K |
| 代理商： | ADS1000A0IDBVTG4 |
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CONFIGURATION REGISTER
READING FROM THE ADS1000
WRITING TO THE ADS1000
ADS1000
SBAS357–SEPTEMBER 2006
Bits 1 - 0: PGA
A user controls the ADS1000 operating mode and
PGA settings via the 8-bit configuration register. The
configuration register format is shown in
Table 3
.
The default setting is 80H.
Bits 1 and 0 control the ADS1000 gain setting; see
Table 4
.
Table 4. PGA Bits
PGA1
0
(1)
0
1
1
PGA0
0
(1)
1
0
1
GAIN
1
(1)
2
4
8
Table 3. CONFIGURATION REGISTER
6
5
4
7
3
2
1
0
ST/BSY
0
0
SC
0
0
PGA1 PGA0
Bit 7: ST/BSY
(1) Default setting.
The meaning of the ST/BSY bit depends on whether
it is being written to or read from.
In single conversion mode, writing a '1' to the
ST/BSY bit causes a conversion to start, and writing
a '0' has no effect. In continuous conversion mode,
the ADS1000 ignores the value written to ST/BSY.
A user can read the output register and the contents
of the configuration register from the ADS1000. To
do this, address the ADS1000 for reading, and read
three bytes from the device. The first two bytes are
the output register contents; the third byte is the
configuration register contents.
When read in single conversion mode, ST/BSY
indicates whether the A/D converter is busy taking a
conversion. If ST/BSY is read as '1', the A/D
converter is busy, and a conversion is taking place; if
'0', no conversion is taking place, and the result of
the last conversion is available in the output register.
A user does not always have to read three bytes
from the ADS1000. If only the contents of the output
register are needed, read only two bytes.
In continuous mode, ST/BSY is always read as '1'.
Reading more than three bytes from the ADS1000
has no effect. All of the bytes beginning with the
fourth byte will be FFh. See
Figure 7
for a timing
diagram of an ADS1000 read operation.
Bits 6 - 5: Reserved
Bits 6 and 5 must be set to zero.
Bit 4: SC
SC controls whether the ADS1000 is in continuous
conversion or single conversion mode. When SC is
'1', the ADS1000 is in single conversion mode; when
SC is '0', the ADS1000 is in continuous conversion
mode. The default setting is '0'.
A user can write new contents into the configuration
register (the contents of the output register cannot
change). To do this, address the ADS1000 for
writing, and write one byte to it. This byte is written
into the configuration register.
Bits 3 - 2: Reserved
Writing more than one byte to the ADS1000 has no
effect. The ADS1000 ignores any bytes sent to it
after the first one, and will only acknowledge the first
byte. See
Figure 8
for a timing diagram of an
ADS1000 write operation.
Bits 3 and 2 must be set to zero.
9
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| ADS1000A0QDBVRQ1 | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC AC Lo Cost 12B ADC 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 |
| ADS1000A1IDBVR | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Low Power 12-Bit 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 |
| ADS1000A1IDBVRG4 | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Low Power 12-Bit 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 |
| ADS1000A1IDBVT | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit ADC with I2C Interface 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 |
| ADS1000A1IDBVT | 制造商:Texas Instruments 功能描述:A/D Converter (A-D) IC |
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