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参数资料
| 型号： | ADS7812UG4 |
| 厂商： | Texas Instruments |
| 文件页数： | 2/24页 |
| 文件大小： | 0K |
| 描述： | IC ADC 12BIT SER 40K 16SOIC |
| 产品培训模块： | Data Converter Basics |
| 标准包装： | 40 |
| 位数： | 12 |
| 采样率（每秒）： | 40k |
| 数据接口： | 串行，SPI? |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 35mW |
| 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： | 16-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 16-SOIC |
| 包装： | 管件 |
| 输入数目和类型： | 3 个单端，单极；3 个单端，双极 |
ADS7812
10
SBAS042A
www.ti.com
INTERNAL DATACLK
With EXT/INT tied LOW, the result from conversion ‘n’ is
serially transmitted during conversion ‘n+1’, as shown in
Figure 5 and with the timing given in Table II. Serial
transmission of data occurs only during a conversion. When
a transmission is not in progress, DATA and DATACLK are
LOW.
During the conversion, the results of the previous conver-
sion will be transmitted via DATA, while DATACLK
provides the synchronous clock for the serial data. The data
format is 12-bit, Binary Two’s Complement, and MSB first.
Each data bit is valid on both the rising and falling edges of
DATACLK. BUSY is LOW during the entire serial trans-
mission and can be used as a frame synchronization signal.
EXTERNAL DATACLK
With EXT/INT tied HIGH, the result from conversion ‘n’ is
clocked out after the conversion has completed, during the
next conversion (‘n+1’), or a combination of these two.
Figure 6 shows the case of reading the conversion result
after the conversion is complete. Figure 7 describes reading
the result during the next conversion. Figure 8 combines the
important aspects of Figures 6 and 7 as to reading part of the
result after the conversion is complete and the remainder
during the next conversion.
The serial transmission of the conversion result is initiated
by a rising edge on DATACLK. The data format is 12-bit,
Binary Two’s Complement, and MSB first. Each data bit is
valid on the falling edge of DATACLK. In some cases, it
t
17
DATACLK
BUSY
CONV
t
1
t
12
t
18
t
16
t
14
t
13
t
15
1
2
3
10
11
12
DATA
MSB
Bit 10
Bit 9
Bit 2
Bit 1
LSB
MSB
BUSY
CONV
t
1
t
5
DATACLK
t
4
t
23
t
22
t
21
t
20
t
19
1234
10
11
12
DATA
MSB
Bit 10
Bit 9
Bit 2
Bit 1
LSB
FIGURE 5. Serial Data Timing, Internal Clock (EXT/INT and CS LOW).
FIGURE 6. Serial Data Timing, External Clock, Clocking After the Conversion Completes (EXT/INT HIGH, CS LOW).
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相关代理商/技术参数 |
参数描述 |
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| ADS7813 | 制造商:BB 制造商全称:BB 功能描述:Low-Power, Serial 16-Bit Sampling ANALOG-TO-DIGITAL CONVERTER |
| ADS7813P | 功能描述:模数转换器 - ADC Low-Power Serial 16-Bit Sampling RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| ADS7813P | 制造商:Texas Instruments 功能描述:16BIT ADC SERIAL O/P 7813 PDIP16 |
| ADS7813PB | 功能描述:模数转换器 - ADC Low-Power Serial 16-Bit Sampling RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| ADS7813PB | 制造商:Texas Instruments 功能描述:A/D CONVERTER (A-D) IC |
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