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参数资料
| 型号： | ADS5103EVM |
| 厂商： | Texas Instruments, Inc. |
| 英文描述： | 1.8-V ANALOG SUPPLY, 10-BIT, 65/40 MSPS ANALOG-TO-DIGITAL CONVERTERS WITH INTERNAL REFERENCE |
| 中文描述： | 1.8 - V模拟电源，10位，65/40 MSPS的模拟到数字的，具有内部参考变换器 |
| 文件页数： | 11/23页 |
| 文件大小： | 334K |
| 代理商： | ADS5103EVM |
ADS5102
ADS5103
SLAS351B – OCTOBER 2001 – REVISED DECEMBER 2001
19
www.ti.com
PRINCIPLES OF OPERATION
_
+
VO–
VO+
VOCM
THS4501
68 pF
49.9
49.9
AIN–
AIN+
CML
ADS5102,
ADS5103
750
750
374
374
Digital
Outputs
V(source)
0.001
F
0.1
F
Figure 31. Driving the ADS5102/3 With Differential Amp (Gain = 2)
driving the analog input with a transformer
When little or no signal conditioning is required, a simple transformer is an excellent way to drive the input of
the ADS5102/3 family. The transformer provides single-ended to differential conversion and at frequencies
under 200 MHz produces very little distortion of the incoming signal. Figure 32 shows the preferred circuit
diagram for implementing a transformer-coupled input. The signal source is ac-coupled and fed to the primary
side of the RF transformer. Since the ADC input must be biased to the correct common mode voltage, the CML
output of the ADC is connected to the secondary center tap. It is recommended to provide decoupling capacitors
of 0.1
F and 0.001 F on the CML output. This filters out any high frequency noise prior the ADC input.
AIN–
AIN+
ADS5102,
ADS5103
V(source)
0.1
F
0.001
F
T1 – 1T-KK81
Mini-Circuits
49.9
0.1
F
Digital
Outputs
CML
Figure 32. Driving the ADS5102/3 With a Transformer
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADS5103IPFB | 功能描述:模数转换器 - ADC 10 Bit 40MSPS 1.8V Int/Ext Ref w/Pwrdwn 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 |
| ADS5103IPFBG4 | 功能描述:模数转换器 - ADC 10 Bit 40MSPS 1.8V Int/Ext Ref w/Pwrdwn 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 |
| ADS5103IPFBR | 功能描述:模数转换器 - ADC 10 Bit 40MSPS 1.8V Int/Ext Ref w/Pwrdwn 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 |
| ADS5103IPFBRG4 | 功能描述:模数转换器 - ADC 10 Bit 40MSPS 1.8V Int/Ext Ref w/Pwrdwn 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 |
| ADS5120 | 制造商:TI 制造商全称:Texas Instruments 功能描述:8-Channel, 10-Bit, 40MSPS, 1.8V CMOS ANALOG-TO-DIGITAL CONVERTER |
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