欧美成人免费电影,国产欧美一区二区三区精品酒店,精品国产a毛片,色网在线免费观看

參數資料
型號: THS1040CPWG4
廠商: TEXAS INSTRUMENTS INC
元件分類: ADC
英文描述: 1-CH 10-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO28
封裝: GREEN, PLASTIC, TSSOP-28
文件頁數: 17/36頁
文件大小: 751K
代理商: THS1040CPWG4
THS1040
SLAS290C OCTOBER 2001 REVISED OCTOBER 2004
24
www.ti.com
APPLICATION INFORMATION
driving the THS1040 analog inputs
driving the clock input
Obtaining good performance from the THS1040 requires care when driving the clock input.
Different sections of the sample-and-hold and ADC operate while the clock is low or high. The user should
ensure that the clock duty cycle remains near 50% to ensure that all internal circuits have as much time as
possible in which to operate.
The CLK pin should also be driven from a low jitter source for best dynamic performance. To maintain low jitter
at the CLK input, any clock buffers external to the THS1040 should have fast rising edges. Use a fast logic family
such as AC or ACT to drive the CLK pin, and consider powering any clock buffers separately from any other
logic on the PCB to prevent digital supply noise appearing on the buffered clock edges as jitter.
As the CLK input threshold is nominally around AVDD/2, any clock buffers need to have an appropriate supply
voltage to drive above and below this level.
driving the sample and hold inputs
driving the AIN+ and AIN pins
Figure 32 shows an equivalent circuit for the THS1040 AIN+ and AIN pins. The load presented to the system
at the AIN pins comprises the switched input sampling capacitor, CSample, and various stray capacitances, C1
and C2.
C1
8 pF
AVDD
AGND
CLK
C2
1.2 pF
CSample
VCM = AIN+/AIN Common Mode Voltage
AIN
_
+
Figure 32. Equivalent Circuit for Analog Input Pins AIN+ and AIN
The input current pulses required to charge CSample and C2 can be time averaged and the switched capacitor
circuit modelled as an equivalent resistor:
R
IN2 +
1
C
S
f
CLK
where CS is the sum of CSample and C2. This model can be used to approximate the input loading versus source
resistance for high impedance sources.
(12)
相關PDF資料
PDF描述
THS1040CDWG4 1-CH 10-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO28
THS1040CDWR 1-CH 10-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO28
THS1040CPWRG4 1-CH 10-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO28
THS1040IDW 1-CH 10-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO28
THS1040IDWR 1-CH 10-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO28
相關代理商/技術參數
參數描述
THS1040CPWR 功能描述:模數轉換器 - ADC 10 Bit 40 MSPS Low Power ADC RoHS:否 制造商:Texas Instruments 通道數量:2 結構:Sigma-Delta 轉換速率: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32
THS1040CPWRG4 功能描述:模數轉換器 - ADC 10 Bit 40 MSPS Low Power ADC RoHS:否 制造商:Texas Instruments 通道數量:2 結構:Sigma-Delta 轉換速率: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32
THS1040EVM 功能描述:數據轉換 IC 開發工具 THS1040 Eval Mod RoHS:否 制造商:Texas Instruments 產品: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
THS1040IDW 功能描述:模數轉換器 - ADC 10 Bit 40 MSPS Low Power ADC RoHS:否 制造商:Texas Instruments 通道數量:2 結構:Sigma-Delta 轉換速率: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32
THS1040IDWG4 功能描述:模數轉換器 - ADC 10 Bit 40 MSPS Low Power ADC RoHS:否 制造商:Texas Instruments 通道數量:2 結構:Sigma-Delta 轉換速率: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32
主站蜘蛛池模板: 巍山| 西盟| 社旗县| 含山县| 花垣县| 孝感市| 宁武县| 虎林市| 甘洛县| 信阳市| 大兴区| 上高县| 康保县| 永嘉县| 安龙县| 凉城县| 寿光市| 河东区| 邢台市| 云安县| 自贡市| 两当县| 盐津县| 丹凤县| 华宁县| 民勤县| 筠连县| 麻栗坡县| 台湾省| 楚雄市| 信丰县| 泰和县| 马公市| 札达县| 会理县| 上饶市| 商南县| 穆棱市| 宜川县| 武乡县| 黄陵县|