参数资料
| 型号： | AD7994BRUZ-1 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 11/32页 |
| 文件大小： | 0K |
| 描述： | IC ADC 12BIT 4CHAN I2C 16TSSOP |
| 标准包装： | 96 |
| 位数： | 12 |
| 采样率（每秒）： | 188k |
| 数据接口： | I²C，串行 |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 2.2mW |
| 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： | 16-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 16-TSSOP |
| 包装： | 管件 |
| 输入数目和类型： | 4 个单端，单极 |
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AD7993/AD7994
Rev. 0 | Page 19 of 32
CONFIGURATION REGISTER
The configuration register is an 8-bit read/write register that is used to set the operating modes of the AD7993/AD7994. The bit functions
are outlined in Table 9. A single-byte write is necessary when writing to the configuration register.
Table 9. Configuration Register Bit Function Descriptions and Default Settings at Power-Up
D7
D6
D5
D4
D3
D2
D1
D0
CH4
CH3
CH2
CH1
FLTR
ALERT EN
BUSY/ALERT
ALERT/BUSY POLARITY
0
1
0
Table 10. Bit Function Descriptions
Bit
Mnemonic
Comment
D7 to D4
CH4 to CH1
These 4-channel address bits select the analog input channel(s) to be converted. A 1 in any of Bits D7 to D4
selects a channel for conversion. If more than one channel bit is set to 1, the AD7993/AD7994 sequence
through the selected channels, starting with the lowest channel. All unused channels should be set to 0.
Table 11 shows how these 4-channel address bits are decoded. Prior to initiating a conversion, the channel(s)
must be selected in the configuration register.
D3
FLTR
The value written to this bit of the control register determines whether the filtering on SDA and SCL is
enabled or is to be bypassed. If this bit is a 1, then the filtering is enabled; if it is a 0, the filtering is bypassed.
D2
ALERT EN
The hardware ALERT function is enabled if this bit is set to 1 and disabled if this bit is set to 0. This bit is used
in conjunction with the BUSY/ALERT bit to determine if the ALERT/BUSY pin act as an ALERT or a BUSY output
(see Table 12).
D1
BUSY/ALERT
This bit is used in conjunction with the ALERT EN bit to determine if the ALERT/BUSY output, Pin 13, acts as an
ALERT or BUSY output (see Table 12), and if Pin 13 is configured as an ALERT output pin, if it is to be reset.
D0
BUSY/ALERT
POLARITY
This bit determines the active polarity of the ALERT/BUSY pin regardless of whether it is configured as an
ALERT or BUSY output. It is active low if this bit is set to 0, and active high if it is set to 1.
Table 11. Channel Selection
D7
D6
D5
D4
Analog Input Channel
Comments
0
No channel selected; see address pointer byte, Mode 2.
0
1
Convert on VIN1.
0
1
0
Convert on VIN2.
0
1
Sequence between VIN1 and VIN2.
0
1
0
Convert on VIN3.
0
1
0
1
Sequence between VIN1 and VIN3.
0
1
0
Sequence between VIN2 and VIN3.
0
1
Sequence between VIN1, VIN2, and VIN3.
1
0
Convert on VIN4.
1
0
1
Sequence between VIN1 and VIN4.
1
0
1
0
Sequence between VIN2 and VIN4.
1
0
1
Sequence between VIN1, VIN2, and VIN4.
1
0
Sequence between VIN3 and VIN4.
1
0
1
Sequence between VIN1, VIN3, and VIN4.
1
0
Sequence between VIN2, VIN3, and VIN4.
1
Sequence between VIN1, VIN2, VIN3, and VIN4.
The AD7993/AD7994 convert on the selected channel in
the sequence in ascending order, starting with the
lowest channel in the sequence.
Table 12. Alert/Busy Function
D2
D1
ALERT/BUSY Pin Configuration
0
Pin does not provide any interrupt signal.
0
1
Pin configured as a busy output.
1
0
Pin configured as an alert output.
1
Resets the ALERT output pin, the Alert_Flag bit in the conversion result register, and the entire alert status register
(if any is active). If 1/1 is written to Bits D2/D1 in the configuration register to reset the ALERT pin, the Alert_Flag bit,
and the alert status register, the contents of the configuration register read 1/0 for D2/D1, respectively, if read back.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD7994BRUZ-1REEL | 功能描述:IC ADC 12BIT 4CHAN I2C 16TSSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1,000 系列:- 位数:16 采样率（每秒）:45k 数据接口:串行 转换器数目:2 功率耗散（最大）:315mW 电压电源:模拟和数字 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC W 包装:带卷 (TR) 输入数目和类型:2 个单端，单极 |
| AD7994-X | 制造商:AD 制造商全称:Analog Devices 功能描述:4-Channel, 10- and 12-Bit ADCs with I2C Compatible Interface in 16-Lead TSSOP |
| AD7995 | 制造商:AD 制造商全称:Analog Devices 功能描述:4-Channel, 12-/10-/8-Bit ADC with I2C-Compatible Interface in 8-Lead SOT-23 |
| AD7995ARJZ-0RL | 功能描述:IC ADC 10BIT 4CHAN I2C SOT23-8 RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 其它有关文件:TSA1204 View All Specifications 标准包装:1 系列:- 位数:12 采样率（每秒）:20M 数据接口:并联 转换器数目:2 功率耗散（最大）:155mW 电压电源:模拟和数字 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-TQFP 供应商设备封装:48-TQFP（7x7） 包装:Digi-Reel® 输入数目和类型:4 个单端，单极；2 个差分，单极 产品目录页面:1156 (CN2011-ZH PDF) 其它名称:497-5435-6 |
| 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 |
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