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| 型号： | THS1031CDWRG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | ADC |
| 英文描述： | 1-CH 10-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO28 |
| 封装： | GREEN, PLASTIC, SOIC-28 |
| 文件页数： | 11/42页 |
| 文件大小： | 730K |
| 代理商： | THS1031CDWRG4 |
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THS1031
3-V TO 5.5-V, 10-BIT, 30 MSPS
CMOS ANALOG-TO-DIGITAL CONVERTER
SLAS242E – NOVEMBER 1999 – REVISED MARCH 2002
19
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PRINCIPLES OF OPERATION
top/bottom mode (MODE = AVDD)
Sample
and
Hold
1
–1/2
ADC
Core
PGA
REFTF = AVDD + (REFTS – REFBS)
AIN+
REFTS
REFBS
Internal
Reference
Buffer
REFBF = AVDD – (REFTS – REFBS)
2
Figure 18. ADC Reference Generation Mode = AVDD
Connecting MODE to AVDD enables the internal reference buffer. Its inputs are internally switched to the REFTS
and REFBS pins and its outputs internally switched to pins REFTF and REFBF. The internal connections
(REFTS to REFTF) and (REFBS to REFBF) are broken.
To match the signal span to the full ADC input span, the voltage difference between REFTS and REFBS should
be REFTS – REFBS = [(FS+) – (FS–)]
× Gain, with the average of the REFTS and REFBS voltages being the
AIN midscale voltage, VM.
Typically, REFSENSE is tied to AVDD to disable the ORG output to VREF (as in Figure 19), but the user can
choose to use the ORG output to VREF as either REFTS or REFBS.
AIN
REFTS
REFBS
REFTF
REFBF
REFSENSE
MODE
AVDD
+FS
–FS
DC SOURCE = VM + [(FS+) – (FS–)]
×
DC SOURCE =VM – [(FS+) – (FS–)]
×
0.1
F
10
F
0.1
F
0.1
F
GAIN
2
GAIN
2
Figure 19. ADC Reference Generation Mode = AVDD
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相关代理商/技术参数 |
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| THS1031CPW | 功能描述:模数转换器 - ADC 10bit 30MSPS 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 |
| THS1031CPWG4 | 功能描述:模数转换器 - ADC 10-Bit 30 MSPS 1-Ch 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 |
| THS1031CPWR | 功能描述:模数转换器 - ADC 10-Bit 30 MSPS 1-Ch 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 |
| THS1031CPWRG4 | 功能描述:模数转换器 - ADC 10-Bit 30 MSPS 1-Ch 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 |
| THS1031EVM | 功能描述:数据转换 IC 开发工具 THS1031 Eval Mod RoHS:否 制造商:Texas Instruments 产品:Demonstration Kits 类型:ADC 工具用于评估:ADS130E08 接口类型:SPI 工作电源电压:- 6 V to + 6 V |
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