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参数资料
| 型号： | EVAL-AD7194EBZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 14/57页 |
| 文件大小： | 0K |
| 描述： | EVAL BOARD FOR AD7194 |
| 设计资源： | EVAL-AD7zzzEBZ Schematic AD7194 Gerber Files |
| 标准包装： | 1 |
| ADC 的数量： | 1 |
| 位数： | 24 |
| 数据接口： | DSP，MICROWIRE?，QSPI?，串行，SPI? |
| 工作温度： | -40°C ~ 105°C |
| 已用 IC / 零件： | AD7194 |
| 已供物品： | 板，线缆 |
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AD7194
Data Sheet
Rev. A | Page 20 of 56
STATUS REGISTER
RS2, RS1, RS0 = 000; Power-On/Reset = 0x80
The status register is an 8-bit read-only register. To access the
ADC status register, the user must write to the communications
register, select the next operation to be a read operation, and
load Bit RS2, Bit RS1, and Bit RS0 with 0. Table 18 outlines the bit
designations for the status register. SR0 through SR7 indicate the
bit locations, SR denoting that the bits are in the status register.
SR7 denotes the first bit of the data stream. The number in paren-
theses indicates the power-on/reset default status of that bit.
SR7
SR6
SR5
SR4
SR3
SR2
SR1
SR0
RDY(1)
ERR(0)
NOREF(0)
Parity(0)
CHD3(0)
CHD2(0)
CHD1(0)
CHD0(0)
Table 18. Status Register (SR) Bit Designations
Bit Location
Bit Name
Description
SR7
RDY
Ready bit for the ADC. This bit is cleared when data is written to the ADC data register. The RDY bit is set
automatically after the ADC data register is read, or a period of time before the data register is updated,
with a new conversion result to indicate to the user that the conversion data should not be read. It is
also set when the part is placed in power-down mode or idle mode or when SYNC is taken low. The end
of a conversion is also indicated by the DOUT/RDY pin. This pin can be used as an alternative to the
status register for monitoring the ADC for conversion data.
SR6
ERR
ADC error bit. This bit is written to at the same time as the RDY bit. This bit is set to indicate that the
result written to the ADC data register is clamped to all 0s or all 1s. Error sources include overrange,
underrange, or the absence of a reference voltage. This bit is cleared when the result written to the data
register returns to within the allowed analog input range. The ERR bit is also set during calibrations if
the reference source is invalid or if the applied analog input voltages are outside range during system
calibrations.
SR5
NOREF
No external reference bit. This bit is set to indicate that the selected reference (REFIN1 or REFIN2) is at a
voltage that is below a specified threshold. When set, conversion results are clamped to all 1s. This bit is
cleared to indicate that a valid reference is applied to the selected reference pins. The NOREF bit is enabled
by setting the REFDET bit in the configuration register to 1.
SR4
Parity
Parity check of the data register. If the ENPAR bit in the mode register is set, the parity bit is set if there is
an odd number of 1s in the data register. It is cleared if there is an even number of 1s in the data
register. The DAT_STA bit in the mode register should be set when the parity check is used. When the
DAT_STA bit is set, the contents of the status register are transmitted along with the data for each data
register read.
SR3 to SR0
CHD3 to CHD0
These bits indicate which channel corresponds to the data register contents. They do not indicate
which channel is presently being converted, but indicate which channel was selected when the
conversion contained in the data register was generated.
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相关代理商/技术参数 |
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| EVAL-AD7195EBZ | 功能描述:BOARD EVAL FOR AD7195 RoHS:是 类别:编程器，开发系统 >> 评估演示板和套件 系列:- 标准包装:1 系列:- 主要目的:电信，线路接口单元（LIU） 嵌入式:- 已用 IC / 零件:IDT82V2081 主要属性:T1/J1/E1 LIU 次要属性:- 已供物品:板，电源，线缆，CD 其它名称:82EBV2081 |
| EVAL-AD7262EDZ | 功能描述:BOARD EVAL CONTROL AD7262 RoHS:是 类别:编程器，开发系统 >> 评估板 - 模数转换器 (ADC) 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:- ADC 的数量:1 位数:12 采样率（每秒）:94.4k 数据接口:USB 输入范围:±VREF/2 在以下条件下的电源（标准）:- 工作温度:-40°C ~ 85°C 已用 IC / 零件:MAX11645 已供物品:板，软件 |
| EVAL-AD7264EDZ | 功能描述:BOARD EVALUATION FOR AD7264 RoHS:是 类别:编程器，开发系统 >> 评估板 - 模数转换器 (ADC) 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:- ADC 的数量:1 位数:12 采样率（每秒）:94.4k 数据接口:USB 输入范围:±VREF/2 在以下条件下的电源（标准）:- 工作温度:-40°C ~ 85°C 已用 IC / 零件:MAX11645 已供物品:板，软件 |
| EVAL-AD7265CB | 制造商:AD 制造商全称:Analog Devices 功能描述:Differential/Single-Ended Input, Dual 1 MSPS, 12-Bit, 3-Channel SAR ADC |
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