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| 型号： | THS1030CPWR |
| 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, TSSOP-28 |
| 文件页数： | 20/37页 |
| 文件大小： | 727K |
| 代理商： | THS1030CPWR |
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THS1030
3V TO 5.5V, 10BIT, 30 MSPS
CMOS ANALOGTODIGITAL CONVERTER
SLAS243E NOVEMBER 1999 REVISED DECEMBER 2003
27
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PRINCIPLES OF OPERATION
driving the internal reference buffer (top/bottom mode)
Figure 31 shows the load present on the REFTS and REFBS pins in top/bottom mode due to the internal
reference buffer only. The sample and hold must also be driven via these pins, which adds additional load.
AVDD
AGND
AVDD + REFTS + REFBS
REFTS
REFBS
RIN
14 k
Mode = AVDD
_
+
4
Figure 31. Equivalent Circuit of Inputs to Internal Reference Buffer
Equations for the currents flowing into REFTS and REFBS are:
I
IN
TS
+
3
REFTS
* AV
DD *
REFBS
4
R
IN
I
IN
BS
+
3
REFBS
* AV
DD *
REFTS
4
R
IN
These currents must be provided by the sources on REFTS and REFBS in addition to the requirements of driving
the sample and hold. Tolerance on these currents are
±50%.
driving REFTS and REFBS
C1
7 pF
AVDD
AGND
CLK
C2
0.6 pF
CSAMPLE
VLAST
REFTS
REFBS
Mode = AVDD
Internal
Reference
Buffer
_
+
Figure 32. Equivalent Circuit of REFTS and REFBS Inputs
This is essentially a combination of driving the ADC internal reference buffer (if in top/bottom mode) and also
driving a switched capacitor load like AIN, but with the sampling capacitor and CP2 on each pin now being 0.6 pF
and about 0.6 pF respectively.
(12)
(13)
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相关代理商/技术参数 |
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| THS1030CPWRG4 | 功能描述:模数转换器 - ADC 10-Bit 30 MSPS 1-Ch Pin Comp 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 |
| THS1030EVM | 功能描述:数据转换 IC 开发工具 THS1030 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 |
| THS1030IDW | 功能描述:模数转换器 - 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 |
| THS1030IDWG4 | 功能描述:模数转换器 - ADC 10-Bit 30 MSPS 1-Ch Pin Comp 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 |
| THS1030IDWR | 功能描述:视频模拟/数字化转换器集成电路 10-Bit 30 MSPS 1-Ch Pin Comp RoHS:否 制造商:Texas Instruments 输入信号类型:Differential 转换器数量:1 ADC 输入端数量:4 转换速率:3 Gbps 分辨率:8 bit 结构: 输入电压:3.3 V 接口类型:SPI 信噪比: 电压参考: 电源电压-最大:3.45 V 电源电压-最小:3.15 V 最大功率耗散: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:TCSP-48 封装:Reel |
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