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参数资料
| 型号： | AD7995ARJZ-0RL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 13/28页 |
| 文件大小： | 0K |
| 描述： | IC ADC 10BIT 4CHAN I2C SOT23-8 |
| 产品变化通告： | AD7991,5,9 Offset Error Change 17/Sept/2010 |
| 设计资源： | Using AD8599 as an Ultralow Distortion Driver for the AD7995 (CN0044) |
| 标准包装： | 1 |
| 位数： | 10 |
| 采样率（每秒）： | 1M |
| 数据接口： | I²C，串行 |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 4.68mW |
| 电压电源： | 单电源 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-8 |
| 供应商设备封装： | SOT-23-8 |
| 包装： | 标准包装 |
| 输入数目和类型： | 4 个单端，单极 |
| 其它名称： | AD7995ARJZ-0RLDKR |
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AD7991/AD7995/AD7999
Rev. B | Page 20 of 28
INTERNAL REGISTER STRUCTURE
CONFIGURATION REGISTER
The configuration register is an 8-bit write-only register that is used to set the operating modes of the AD7991/AD7995/AD7999. The bit
functions are outlined in Table 10. A single-byte write is necessary when writing to the configuration register. D7 is the MSB. When the
master writes to the AD7991/AD7995/AD7999, the first byte is written to the configuration register.
Table 9. Configuration Register Bit Map and Default Settings at Power-Up
D7
D6
D5
D4
D3
D2
D1
D0
CH3
CH2
CH1
CH0
REF_SEL
FLTR
Bit trial delay
Sample delay
1
0
Table 10. Bit Function Descriptions
Bit
Mnemonic
Comment
D7 to D4
CH3 to CH0
These four channel address bits select the analog input channel(s) to be converted. If a channel address bit
(Bit D7 to Bit D4) is set to 1, a channel is selected for conversion. If more than one channel bit is set to 1, the
AD7991/AD7995/AD7999 sequence through the selected channels, starting with the lowest channel. All
unused channels should be set to 0. Table 11 shows how these four channel address bits are decoded. Prior
to the device initiating a conversion, the channel(s) must be selected in the configuration register.
D3
REF_SEL
This bit allows the user to select the supply voltage as the reference or choose to use an external reference. If
this bit is 0, the supply is used as the reference, and the device acts as a 4-channel input part. If this bit is set
to 1, an external reference must be used and applied to the VIN3/VREF pin, and the device acts as a 3-channel
input part.
D2
FLTR
The value written to this bit of the control register determines whether the filtering on SDA and SCL is
enabled or bypassed. If this bit is set to 0, the filtering is enabled; if it set to 1, the filtering is bypassed.
D1
Bit trial delay
See the Sample Delay and Bit Trial Delay section.
D0
Sample delay
See the Sample Delay and Bit Trial Delay section.
Table 11. Channel Selection
D7
D6
D5
D4
Analog Input Channel1
0
No channel selected
0
1
Convert on VIN0
0
1
0
Convert on VIN1
0
1
Sequence between VIN0 and VIN1
0
1
0
Convert on VIN2
0
1
0
1
Sequence between VIN0 and VIN2
0
1
0
Sequence between VIN1 and VIN2
0
1
Sequence among VIN0, VIN1, and VIN2
1
0
Convert on VIN3
1
0
1
Sequence between VIN0 and VIN3
1
0
1
0
Sequence between VIN1 and VIN3
1
0
1
Sequence among VIN0, VIN1, and VIN3
1
0
Sequence between VIN2 and VIN3
1
0
1
Sequence among VIN0, VIN2, and VIN3
1
0
Sequence among VIN1, VIN2, and VIN3
1
Sequence among VIN0, VIN1, VIN2, and VIN3
1 The AD7991/AD7995/AD7999 converts on the selected channel in the sequence in ascending order, starting with the lowest channel in the sequence.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD7995YRJZ-0 | 制造商:AD 制造商全称:Analog Devices 功能描述:4-Channel, 12-/10-/8-Bit ADC with I2CCompatible Interface in 8-Lead SOT23 |
| AD7995YRJZ-0500RL7 | 功能描述:IC ADC 10BIT 4CH SAR I2C SOT23-8 RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1 系列:microPOWER™ 位数:8 采样率（每秒）:1M 数据接口:串行，SPI? 转换器数目:1 功率耗散（最大）:- 电压电源:模拟和数字 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:24-VFQFN 裸露焊盘 供应商设备封装:24-VQFN 裸露焊盘（4x4） 包装:Digi-Reel® 输入数目和类型:8 个单端，单极 产品目录页面:892 (CN2011-ZH PDF) 其它名称:296-25851-6 |
| AD7995YRJZ-0RL | 功能描述:IC ADC 10BIT 4CH I2C SOT23-8 RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:2,500 系列:- 位数:16 采样率（每秒）:15 数据接口:MICROWIRE?，串行，SPI? 转换器数目:1 功率耗散（最大）:480µW 电压电源:单电源 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:38-WFQFN 裸露焊盘 供应商设备封装:38-QFN（5x7） 包装:带卷 (TR) 输入数目和类型:16 个单端，双极；8 个差分，双极 配用:DC1011A-C-ND - BOARD DELTA SIGMA ADC LTC2494 |
| AD7995YRJZ-1 | 制造商:AD 制造商全称:Analog Devices 功能描述:4-Channel, 12-/10-/8-Bit ADC with I2CCompatible Interface in 8-Lead SOT23 |
| AD7995YRJZ-1500RL7 | 功能描述:IC ADC 10BIT 4CH SAR I2C SOT23-8 RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1 系列:microPOWER™ 位数:8 采样率（每秒）:1M 数据接口:串行，SPI? 转换器数目:1 功率耗散（最大）:- 电压电源:模拟和数字 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:24-VFQFN 裸露焊盘 供应商设备封装:24-VQFN 裸露焊盘（4x4） 包装:Digi-Reel® 输入数目和类型:8 个单端，单极 产品目录页面:892 (CN2011-ZH PDF) 其它名称:296-25851-6 |
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