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| 型号： | THS1007CDA |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | ADC |
| 英文描述： | 4-CH 10-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO32 |
| 封装： | GREEN, PLASTIC, TSSOP-32 |
| 文件页数： | 22/34页 |
| 文件大小： | 364K |
| 代理商： | THS1007CDA |
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THS1007
SLAS286B AUGUST 2000 REVISED DECEMBER 2010
www.ti.com
29
DC COUPLING
An operational amplifier can be configured to shift the signal level according to the analog input voltage range
of the THS1007. The analog input voltage range of the THS1007 goes from 1.5 V to 3.5 V. An operational
amplifier can be used as shown in Figure 38.
Figure 38 shows an example with the analog input signal in the range between 1 V up to 1 V. This signal is
shifted by an operational amplifier to the analog input range of the THS1007 (1.5 V to 3.5 V). The operational
amplifier is configured as an inverting amplifier with a gain of 1. The required dc voltage of 1.25 V at the
noninverting input is derived from the 2.5-V output reference REFOUT of the THS1007 by using a resistor
divider. Therefore, the operational amplifier output voltage is centered at 2.5 V. The 10 μF tantalum capacitor
is required for bypassing REFOUT. REFIN of the THS1007 must be connected directly to REFOUT in
single-ended mode. The use of ratio matched, thin-film resistor networks minimizes gain and offset errors.
_
+
5 V
R1
RS
3.5 V
2.5 V
1.5 V
THS1007
AINP
REFOUT
R2
1.25 V
1 V
0 V
1 V
REFIN
+
C
10 μF
Figure 38. Level-Shift for DC-Coupled Input
DIFFERENTIAL MODE OF OPERATION
For the differential mode of operation, a conversion from single-ended to differential is required. A conversion
to differential signals can be achieved by using an RF-transformer, which provides a center tap. Best
performance is achieved in differential mode.
THS1007
AINP
AINM
REFOUT
C
R
200 Ω
49.9 Ω
Mini Circuits
T41
+
10 μF
Figure 39. Transformer Coupled Input
相关PDF资料 |
PDF描述 |
|---|---|
| THS1007CDAR | 4-CH 10-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO32 |
| THS1007CDAG4 | 4-CH 10-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO32 |
| THS1007IDA | 4-CH 10-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO32 |
| THS1007IDAR | 4-CH 10-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO32 |
| THS1007IDAG4 | 4-CH 10-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO32 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| THS1007CDAG4 | 功能描述:模数转换器 - ADC 10-Bit 6MSPS Simult Sampling Quad 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 |
| THS1007CDAR | 制造商:TI 制造商全称:Texas Instruments 功能描述:10-BIT, 4 ANALOG INPUT, 6-MSPS, SIMULATANEOUS SAMPLING ANALOG-TO-DIGITAL CONVERTER |
| THS1007IDA | 功能描述:模数转换器 - ADC 10 BIT QUAD ADC w/o 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 |
| THS1007IDAG4 | 功能描述:模数转换器 - ADC 10-Bit 6MSPS Simult Sampling Quad 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 |
| THS1007IDAR | 制造商:TI 制造商全称:Texas Instruments 功能描述:10-BIT, 4 ANALOG INPUT, 6-MSPS, SIMULATANEOUS SAMPLING ANALOG-TO-DIGITAL CONVERTER |
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