參數(shù)資料
型號： THS1206IDAG4
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)： 29/43頁
文件大?。?/td> 722K
代理商： THS1206IDAG4
THS1206
SLAS217H – MAY 1999 – REVISED JULY 2003#
www.ti.com
35
A differential operation is desired for many applications. Figure 41 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 41. 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 45.
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)
相關(guān)PDF資料
PDF描述
THS1206CDAR 4-CH 12-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO32
THS1206CDA 4-CH 12-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO32
THS1206QDAR 4-CH 12-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO32
THS1206MDAREP 4-CH 12-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO32
THS1206MDA 4-CH 12-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO32
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
THS1206IDAR 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
THS1206IDARG4 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
THS1206MDA 制造商:Texas Instruments 功能描述:ADC SGL PIPELINED 6MSPS 12-BIT PARALLEL 32TSSOP - Tape and Reel
THS1206MDAREP 功能描述:模數(shù)轉(zhuǎn)換器 - ADC EP 12B,6Msps ADC 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
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
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