App note from ON Semiconductors introducing their nano power ADC NCD9801x. Link here (PDF) The NCD9801x ADC is a differential 12−bit resolution successive approximation register analog−to−digital converter unlike any other SAR ADC available on the market. It uses an innovative design to keep a low input capacitance of 2 pF, easily besting the typical SAR […]
Tag Archives: ADCs
App note: How to improve ADC measurement accuracy with high input source impedance
Improving ADC accuracy a topic reviewed in this app note from Maxim Integrated. Link here Unbuffered ADCs are commonly used due to their simplicity of design. However, these ADCs have limited acquisition time and require input signals to settle within the allocated time. These ADCs must track their input signals for intervals longer than the […]
App note: Effects of different resistor tolerances in a differential ADC for THD performance
App note from Maxim Integrated demonstrating the effects of different resistor tolerances on the analog front end of ADC’s performance. Link here This application note explains how the different tolerances of the same value resistors at the inputs can alter the THD performance of the fully differential ADC. The cost of resistors changes significantly with […]
Interleaving ADC’s to increase sampling bandwidth
Drone writes: Here are a series of short but informative posts by Jonathan Harris of ADI about interleaving ADC’s to increase sampling bandwidth: Interleaved ADCs: The Basics More Thoughts on Interleaved ADCs Interleaving Spurs: Offset Mismatches Via the contact form.
App note: Build precise S/H Amps for fast 12 Bit ADCs
An app note from Analog Devices: Build precise S/H Amps for fast 12 Bit ADCs (PDF!) S/h amplifier circuits will use one of several standard architectures: closed-loop or open-loop, and inverting or noninverting configurations. No matter what circuit type designers employ, they need to incorporate a high-speed amplifier to buffer the input signal and a […]