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| 型號： | THS1206MDAREP |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | ADC |
| 英文描述： | 4-CH 12-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO32 |
| 封裝： | GREEN, PLASTIC, TSSOP-32 |
| 文件頁數(shù)： | 21/43頁 |
| 文件大小： | 799K |
| 代理商： | THS1206MDAREP |
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THS1206EP
12BIT 6 MSPS, SIMULTANEOUS SAMPLING
ANALOGTODIGITAL CONVERTERS
SGLS126A JULY 2002 REVISED FEBRUARY 2003
28
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
analog input configuration and reference voltage (continued)
A differential operation is desired for many applications. Figure 18 shows a simplified model for the analog inputs
AINM and AINP, which are configured for differential operation. This configuration has a few advantages, which
are discussed in the following paragraphs.
12-Bit
ADC
VREFP
VREFM
AINP
Σ
VADC
AINM
+
Figure 18. Differential Input Stage
In comparison to the single-ended configuration it can be seen that the voltage, VADC, which is applied at the
input of the ADC is the difference between the input AINP and AINM. This means that VREFM defines the
minimum voltage (VADC) which can be applied to the ADC. VREFP defines the maximum voltage (VADC) which
can be applied to the ADC. The voltage VADC can be calculated as follows:
V
ADC +
ABS(AINP–AINM)
An advantage to single-ended operation is that the common-mode voltage
V
CM +
AINM
) AINP
2
can be rejected in the differential configuration, if the following condition for the analog input voltages is true:
AGND
v AINM, AINP v AV
DD
1V
v V
CM v
4V
In addition to the common-mode voltage rejection, the differential operation allows a dc-offset rejection which
is common to both analog inputs. See also Figure 20.
single-ended mode of operation
The THS1206 can be configured for single-ended operation using dc or ac coupling. In either case, the input
of the THS1206 must be driven from an operational amplifier that does not degrade the ADC performance.
Because the THS1206 operates from a 5-V single supply, it is necessary to level-shift ground-based bipolar
signals to comply with its input requirements. This can be achieved with dc and ac coupling. An application
example is shown for dc-coupled level shifting in the following section, dc coupling.
(2)
(3)
(4)
(5)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| THS1206M-EVM | 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開發(fā)工具 THS1206M Eval Module RoHS:否 制造商:Texas Instruments 產(chǎn)品:Demonstration Kits 類型:ADC 工具用于評估:ADS130E08 接口類型:SPI 工作電源電壓:- 6 V to + 6 V |
| THS1206QDA | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 6 MSPS Quad Channel RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| THS1206QDAR | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12 Bit 6 MSPS Quad Channel RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| THS1207 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:12 bit 4 ANALOG INPUT 6 MSPS SIMULTANEOUS SAMPLING |
| THS1207CDA | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 6MSPS Simult Sampling Quad Ch RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
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