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| 型号： | THS1031IDWRG4 |
| 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, SOIC-28 |
| 文件页数： | 16/42页 |
| 文件大小： | 730K |
| 代理商： | THS1031IDWRG4 |
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THS1031
3-V TO 5.5-V, 10-BIT, 30 MSPS
CMOS ANALOG-TO-DIGITAL CONVERTER
SLAS242E – NOVEMBER 1999 – REVISED MARCH 2002
23
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PRINCIPLES OF OPERATION
operating configuration examples (continued)
In Figure 25, the input signal is differential, so Mode = AVDD/2 (differential mode) is set to allow the inverse signal
to be applied to REFTS and REFBS. The differential input goes from – 0.8 V to 0.8 V, giving a total input signal
span of 1.6 V. Using a PGA gain of 1, REFTF – REFBF should therefore, equal 1.6 V. REFSENSE is connected
to resistors RA and RB (external divider mode) to make VREF = 1.6 V, that is RA/RB = 0.6 (see Figure 22).
AIN
REFTS
REFBS
REFTF
REFBF
REFSENSE
MODE
1.4 V
0.6 V
0.1
F
10
F
0.1
F
0.1
F
VREF = 1.6 V
RA
RB
1 V
1.4 V
0.6 V
1 V
AIN+
AIN–
AVDD
2
Figure 25. Differential Operation
Figure 26 shows a center span configuration for an input waveform swinging between 0.2 and 1.9 V. Pins
REFTS and REFBS are connected to a voltage source of 1.05 V, equal to the mid-scale of the input waveform.
With the PGA gain set to its default value of 1, REFTF – REFBF should be set equal to the span of the input
waveform, 1.7 V, so VREF is connected to an external source of 1.7 V. REFSENSE must be connected to AVDD
to disable the ORG output to VREF (see Figure 23) to allow this external source to be applied.
AIN
REFTS
REFBS
REFTF
REFBF
REFSENSE
MODE
1.9 V
0.2 V
0.1
F
10
F
0.1
F
0.1
F
1.05 V
DC SOURCE = 1.05 V
VREF
DC SOURCE = 1.7 V
AVDD
2
Figure 26. Center Span Operation
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相关代理商/技术参数 |
参数描述 |
|---|---|
| THS1031IPW | 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 |
| THS1031IPWG4 | 功能描述:模数转换器 - ADC 10B 30 MSPS ADC Sgl Ch. Integ. Pgmable 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 |
| THS1031IPWR | 功能描述:模数转换器 - ADC 10-Bit 30 MSPS 1-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 |
| THS1031IPWRG4 | 功能描述:模数转换器 - ADC 10-Bit 30 MSPS 1-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 |
| THS1031SOIC | 制造商:TI 制造商全称:Texas Instruments 功能描述:2.7 V . 5.5 V, 10-BIT, 30 MSPS CMOS ANALOG-TO-DIGITAL CONVERTER |
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