Equivalent input circuit for input channel SDADCx_AINxP RAIN VAIN SDADCx_AINxM chclk chclkz chclkz chclk C = 0.543 pF + 0.152 pF * gain C = 0.543 pF + 0.152 pF * gain RAIN: impedance of the analog signal source VAIN: signal source Table 3. Typical input impedance of SDADC input...
The datasheet for the AFE722x family specifies the ADC's input DC resistance at >1MOhm in parallel with 4 pF. What is the differential input impedance (e.g. 50, 100 Ohms). The datasheet doesn't specify if the inputs are buffered either, so is there resistan...
[答:Jing] AD8318 is our RF LOG-AMP. I don"t know which resistor you are mentioned. For better performance, you should pay attentation to the impedance match of input/output circuit. This is the very important factor. [2006-2-28 10:56:11] ...
Application Report SLAA456 – January 2011 Input Impedance Measurement Using ADC FFT Data Kang Hsia ... High-Speed Products ABSTRACT Texas Instruments has introduced a family of high-speed analog-to-digital converters (ADCs) suited to meet the demand for high-speed and high-IF sampling systems...
ADS9212 SBASAV2 – OCTOBER 2024 ADS9212 18-Bit, 8-MSPS, Dual Simultaneous-Sampling ADC With Integrated Analog Front End 1 Features • 2-channel, 18-bit ADC with analog front-end: – Dual, simultaneous sampling – Constant 1MΩ input impedance front-end • Programmable analog input ...
thedesignstepsofimpedancetesting andmatching fortheanalogfrontendwereproposed.Thematching hadbeenoptimized,andthetestresultsweregiven.Keywords: A/Dconverter;Networkofanalog input;Impedancemeasurement;Impedancematching1 引 言现代电子设备越来越多地使用到数字信号处理技术,高性能 ADC作为模拟信号和数字信号的桥梁,逐渐...
ADC dynamic range (VREF+ = 3.3 V) V VREF+ - 1 LSB input (digital output = 4095 LSB) unused ADC transition range 2.5 V input (digital output = 3103 LSB) 3.2.7 t ai15499c Effect of the analog signal source resistance The impedance of the analog signal source, or series resis...
[答:Jing] AD8318 is our RF LOG-AMP. I don"t know which resistor you are mentioned. For better performance, you should pay attentation to the impedance match of input/output circuit. This is the very important factor. [2006-2-28 10:56:11] ...
www.ti.com Table of Contents Application Note ADC Input Circuit Evaluation for C2000 Real-Time MCUs (using PSPICE-FOR-TI) James Kennedy and Devin Cottier ABSTRACT The analog-to-digital converter (ADC) is a key module used to sense feedback and monitoring signals in a real-time control ...
Input impedance is the characteristic impedance of the design. In most cases it is 50 ohm, but different values may be called for. The transformer makes a good transimpedance device. It allows the user to couple between different characteristic impedances when needed and fully balance the overall...