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| 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： | 9/28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
17
The resistors and capacitors on the inputs decouple the driving source output from the ADC input and also serve
as first order low pass filters to attenuate out of band noise.
The input range on both inputs is 0 V to AVDD. The full-scale value is determined by the voltage reference. The
positive full-scale output is reached, if
IN equals REF, the negative full-scale output is reached, if IN equals
REF.
IN [V]
OUTPUT
REF
full scale
0
REF
+ full scale
APPLICATION INFORMATION
transformer coupled single-ended to differential configuration
If the application requires the best SNR, SFDR, and THD performance, the input should be transformer
coupled.
The signal amplitude on both inputs of the ADC is one half as high as in a single-ended configuration thus
increasing the ADC ac performance.
100 pF
IN+
IN
THS1401/3/8
CML
R
100 pF
22
22
+
1
F
0.1
F
Figure 20. Transformer Coupled
The following table shows the input voltages for negative full-scale output, zero output, and positive full-scale
output:
IN [VPEAK]
OUTPUT [PEAK]
REF
full scale
0
REF
+ full scale
n = 1 (winding ratio)
The resistor R of the transformer coupled input configuration must be set to match the signal source impedance
R = n2 Rs, where Rs is the source impedance and n is the transformer winding ratio.
APPLICATION INFORMATION
single-ended configuration
In this configuration, the input signal is level shifted by
REF/2.
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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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