參數(shù)資料
型號(hào)： TSA1203IFT-E
廠商： STMICROELECTRONICS
元件分類： ADC
英文描述： 2-CH 12-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, QFP48
封裝： 7 X 7 MM, TQFP-48
文件頁(yè)數(shù)： 10/30頁(yè)
文件大?。?/td> 440K
代理商： TSA1203IFT-E
Application information
TSA1203
18/30
Figure 26. AC-coupled differential input
Figure 26 represents the biasing of a differential input signal in an AC-coupled differential
input configuration. Both inputs VIN and VINB are centered around the common mode
voltage, which can be left internal, or fixed externally.
Figure 27. DC-coupled 2 Vpp differential analog input
Figure 27 shows a DC-coupled configuration with forced VREFP and INCM to the 1V DC
analog input while VREFM is connected to ground; the differential amplitude obtained is
2Vpp.
8.4
Clock input
The quality of your TSA1203 converter is very dependent on your clock input accuracy, in
terms of aperture jitter; the use of a low jitter crystal controlled oscillator is recommended.
Further points to consider in your implementation are:
●
The duty cycle must be between 45% and 55%.
●
The clock power supplies must be independent from the ADC output supplies to avoid
digital noise modulation on the output.
●
When powered-on, the circuit needs several clock periods to reach its normal operating
conditions. Therefore, it is recommended to keep the circuit clocked to avoid random
states before applying the supply voltages.
50
Ω
10nF
TSA1203
VIN
VINB
INCM
33pF
100k
Ω
100k
Ω
50
Ω
10nF
common
mode
TSA1203
VIN
VINB
INCM
330pF
4.7F
10nF
analog
DC
AC+DC
VREFP
VREFM
VREFP-VREFM = 1 V
DC
analog
VINCM = 0.5 V
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TSA1204 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:DUAL-CHANNEL, 12-BIT, 20MSPS, 120mW A/D CONVERTER
TSA1204_06 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Dual channel 12-bit 20Msps 120mW A/D converter
TSA1204IF 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:DUAL-CHANNEL, 12-BIT, 20MSPS, 120mW A/D CONVERTER
TSA1204IFT 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Dual Channel 12-Bit 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
TSA1204IFT-E 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Dual channel 12-bit 20Msps 120mW A/D converter
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