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参数资料
| 型号： | THS1401CPFB |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | ADC |
| 英文描述： | 1-CH 14-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQFP48 |
| 封装： | PLASTIC, TQFP-48 |
| 文件页数： | 10/28页 |
| 文件大小： | 625K |
| 代理商： | THS1401CPFB |
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THS1401
THS1403
THS1408
SLAS248D DECEMBER 1999 REVISED SEPTEMBER 2005
www.ti.com
18
IN+
IN
THS1401/3/8
REF+
REF
+
10 k
100 pF
10 k
22
10 k
10 k
10 k
+ 10 k
Figure 21. Single-Ended With Level Shift
The following table shows the input voltages for negative full-scale output, zero output, and positive full-scale
output:
IN+ [V]
OUTPUT
REF
full scale
0
REF
+ full scale
Note that the resistors of the op-amp and the op-amp all introduce gain and offset errors. Those errors can be
trimmed by varying the values of the resistors.
Because of the added offset, the op-amp does not necessarily operate in the best region of its transfer curve
(best linearity around zero) and therefore may introduce unacceptable distortion. For ac signals, an alternative
is described in the following section.
APPLICATION INFORMATION
AC-coupled single-ended configuration
If the application does not require the signal bandwidth to include dc, the level shift shown in Figure 21 is not
necessary.
IN+
IN
THS1401/3/8
REF+
REF
+
10 nF
10 k
10 k
10 k
10 k
100 pF
22
10 k
10 k
Figure 22. Single-Ended With Level Shift
Because the signal swing on the op-amp is centered around ground, it is more likely that the signal stays within
the linear region of the op-amp transfer function, thus increasing the overall ac performance.
IN [VPEAK]
OUTPUT [PEAK]
REF
full scale
0
REF
+ full scale
Compared to the transformer-coupled configuration, the swing on IN is twice as big, which can decrease the
ac performance (SNR, SFD, and THD).
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| THS1408QPHP | 1-CH 14-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQFP48 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| THS1401-EP | 制造商:TI 制造商全称:Texas Instruments 功能描述:14-BIT, 1/3/8 MSPS DSP COMPATIBLE ANALOG-TO-DIGITAL CONVERTERS WITH INTERNAL REFERENCE AND PGA |
| THS1401EVM | 功能描述:数据转换 IC 开发工具 THS1401 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 |
| THS1401IPFB | 功能描述:模数转换器 - ADC 14-Bit 1/3/8 MSPS DSP-Compatible 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 |
| THS1401IPFBG4 | 功能描述:模数转换器 - ADC 14-Bit 1/3/8 MSPS DSP-Compatible 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 |
| THS1401PFB | 制造商:TI 制造商全称:Texas Instruments 功能描述:14-BIT, 1/3/8 MSPS DSP COMPATIBLE ANALOG-TO-DIGITAL CONVERTERS WITH INTERNAL REFERENCE AND PGA |
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