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参数资料
| 型号： | ADS1252U/2K5 |
| 元件分类： | ADC |
| 英文描述： | 1-CH 24-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO8 |
| 封装： | SO-8 |
| 文件页数： | 4/14页 |
| 文件大小： | 131K |
| 代理商： | ADS1252U/2K5 |
12
ADS1252
A simple two-wire interface is shown in Figure 15. Essentially
P3.2 (INT
0) generates an internal interrupt when DOUT/
DRDY pulses LOW. The user firmware in the 8xC51 vectors
to the interupt handler and shifts the data in using P3.1 as
SCLK and P3.2 as data in. The P1.0 output from 8xC51 is a
free-running clock.
The data must be clocked out before the ADS1252 enters
DRDY mode to ensure reception of valid data, as described
in the DOUT/DRDY section of this data sheet.
ISOLATION
The serial interface of the ADS1252 provides for simple
isolation methods. An example of an isolated three-wire
interface is shown in Figure 16. The ISO150 is used to
transmit the digital clocks over the isolation barrier. In
addition, the digital output of the ADS1252 can, in some
cases, drive opto-isolators directly.
FIGURE 15. Two-Wire Interface to an 8xC51.
+V
IN
–V
IN
+V
DD
CLK
V
REF
GND
SCLK
DOUT/DRDY
V
REF
Circuit
DV
DD
8xC51
ADS1252
P1.0/T2
P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
RST
P3.0
P3.1
P3.2 (INT0)
P3.3
P3.4
P3.5
P3.6
P3.7
XTAL2
XTAL1
V
SS
V
CC
P0.0
P0.1
P0.2
P0.3
P0.4
P0.5
P0.6
P0.7
EA
ALE
PSEN
P2.7
P2.6
P2.5
P2.4
P2.3
P2.2
P2.1
P2.0
V
S
DGND
C1
XTAL
C2
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADS1252UG4 | 功能描述:模数转换器 - ADC ResolutionPlus 24-Bit 40kHz 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 |
| ADS1253 | 制造商:TI 制造商全称:Texas Instruments 功能描述:24-Bit, 20kHz, Low Power ANALOG-TO-DIGITAL CONVERTER |
| ADS1253E | 功能描述:模数转换器 - ADC 24-Bit 20kHz Low Power 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 |
| ADS1253E/2K5 | 功能描述:模数转换器 - ADC 24-Bit 20kHz Low Power 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 |
| ADS1253E/2K5G4 | 功能描述:模数转换器 - ADC 24-Bit 20kHz Low Power 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 |
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