參數(shù)資料
型號(hào)： ADS8413IBRGZTG4
英文描述： 16-BIT, 2-MSPS, LVDS SERIAL INTERFACE, SAR ANALOG-TO-DIGITAL CONVERTER
中文描述： 16位，2 MSPS的LVDS串行接口，SAR類(lèi)比數(shù)位轉(zhuǎn)換器
文件頁(yè)數(shù)： 21/38頁(yè)
文件大?。?/td> 1197K
代理商： ADS8413IBRGZTG4
www.ti.com
ADS8413
AGND
+VA
_
+
170
170
25 pF
25 pF
+IN
IN
AGND
ADS8413
+IN
IN
THS4031
+
49.9
REFIN
R
R
10 F
0.1 F
1 F
REF
A
+
11
12
19
18
680 pF
15
15
2
3
7
4
1
8
INPUT
NULL
V
CC
V
CC
+
NULL
6
THS4031
+
49.9
2
3
7
4
1
8
INPUT+
NULL
V
CC
V
CC
+
NULL
6
ADS8413
SLAS490–OCTOBER 2005
THEORY OF OPERATION (continued)
Figure 16. Simplified Input Circuit
When the converter enters hold mode, the voltage difference between the +IN and -IN inputs is captured on the
internal capacitor array. The input current on the analog inputs depends upon a number of factors: sample rate,
input voltage, signal frequency, and source impedance. Essentially, the current into the ADS8413 charges the
internal capacitor array during the sample period. After this capacitance has been fully charged, there is no
further input current (this may not happen when the signal is moving continuously). The source of the analog
input voltage must be able to charge the input capacitance (25 pF) to better than a 16-bit settling level with a
step input within the acquisition time of the device. For calculation, the step size can be selected equal to the
maximum voltage difference between two consecutive samples at the maximum signal frequency (see the
TYPICAL ANALOG INPUT CIRCUIT section). When the converter goes into hold mode, the input impedance is
greater than 1G
.
Figure 17. Typical Analog Input Schematic
21
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ADS8413IRGZR 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16-bit Uni Diff In Smp rt 4.75-5.25V 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(lèi)型:Differential 信噪比:107 dB 接口類(lèi)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
ADS8413IRGZRG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16-bit Uni Diff In Smp rt 4.75-5.25V 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(lèi)型:Differential 信噪比:107 dB 接口類(lèi)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
ADS8413IRGZT 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16-bit Uni Diff In Smp rt 4.75-5.25V 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(lèi)型:Differential 信噪比:107 dB 接口類(lèi)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
ADS8413IRGZTG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16-bit Uni Diff In Smp rt 4.75-5.25V 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(lèi)型:Differential 信噪比:107 dB 接口類(lèi)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
ADS8422 制造商:BB 制造商全稱:BB 功能描述:16-BIT, 4-MSPS, PSEUDO-BIPOLAR, FULLY DIFFERENTIAL INPUT, MICROPOWER SAMPLING ANALOG-TO-DIGITAL CONVERTER WITH PARALLEL INTERFACE, REFERENCE
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