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参数资料
| 型号： | ADS7812UBE4 |
| 厂商： | Texas Instruments |
| 文件页数： | 9/24页 |
| 文件大小： | 0K |
| 描述： | IC 12BIT 35MW SER OUT ADC 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
17
SBAS042A
www.ti.com
the DSP56002 must be programmed to enable the serial
interface when a LOW to HIGH transition on SCI occurs.
The DSP56002 can also provide the CONV signal, as shown
in Figure 17. The receive and transmit sections of the
interface are decoupled (asynchronous mode) and the trans-
mit section is set to generate a word length frame sync every
other transmit frame (frame rate divider set to 2). The
prescale modulus should be set to produce a transmit frame
at twice the desired conversion rate.
APPLICATIONS CIRCUIT
Figure 18 shows a multiplexed data acquisition circuit using
the ADS7812. The MPC508A provides the multiplexing
function while the OPA134 is configured as a Sallen-Key,
two-pole, unity gain lowpass filter.
CONV
BUSY
DATACLK
DATA
CS
EXT/INT
ADS7812
DSP56002
SC2
SC0
SRD
SYN = 0 (Asychronous)
GCK = 1 (Gated clock)
SCD2 = 1 (SC2 is an output)
SHFD = 0 (Shift MSB first)
WL1 = 0
WL0 = 1 (Word length = 12 bits)
FIGURE 17. DSP56002 Interface to the ADS7812. Processor Initiates Conversions.
In 1
In 2
In 3
In 4
In 5
In 6
In 7
In 8
A
0
A
1
A
2
MPC508A
R1
IN
R2
IN
R3
IN
BUF
BUSY
CONV
DATA
DATACLK
ADS7812
OPA134
C
2
330pF
C
1
2.2nF
R
1
1.4k
R
2
15.4k
+15V
±10V
Full Scale
–15V
P
FIGURE 18. Multiplexed Data Acquisition Circuit.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADS7812UBG4 | 功能描述:模数转换器 - ADC Low-Pwr Serial 12B Sampling ADC 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 |
| ADS7812UE4 | 功能描述:模数转换器 - ADC Low-Power Serial 12-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 |
| ADS7812UG4 | 功能描述:模数转换器 - ADC Low-Pwr Serial 12B Sampling ADC 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 |
| 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 |
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