Low latency analog to digital video converter

Simply put, a PGA increases the input signal seen by the ADC, thereby reducing the effective LSB step size at the input while reducing the input span. Programmable gain amplifiers (PGAs) are typically used in front of analog-to-digital converters to amplify low level input signals in order to improve the overall noise performance. Absolute accuracy: total unadjusted error vs temperature.Д«ased on these exemplary performance characteristics, the LTC2400 family of converters can be used in several unconventional ways, resulting in simpler designs with improved system performance.Д®liminating Front-End Amplification (No PGAs) Future products include multichannel, 20-bit, pin-compatible differential devices and high speed devices.ДЇigure 2. The differential parts offer ultralow noise (as low as 800nV RMS) tiny packages (as small as MSOP-10) and simultaneous 50Hz/60Hz rejection ( LTC2413). The single-ended devices have pin-compatible 20-bit and 24-bit versions with 1-, 2-, 4- and 8-channel implementations. The LTC2400 product family (see product family tree in Figure 1) is divided into single-ended and differential input devices. The absolute accuracy of the LTC2400 family is demonstrated using a bridge sensor in a weigh scale application. Many designers have found that higher speed ADCs with averaging do not meet the one-shot performance of the LTC2400 family. One misconception commonly solved by designers using the LTC2400 family is the relationship between speed and resolution.

This enables direct digitization of many sensors while removing problems associated with front-end offset and gain errors as well as simplifying tare adjustments. One such advantage is the elimination of front-end amplification. The productsвЂ™ ease-of-use and high accuracy without the need for calibration, external clocks or complex interfaces enables designers to rethink their system architectures.ДЄlthough 24 bits may seem excessive to some, many designers find significant advantages with these higher resolution converters. Linear TechnologyвЂ™s Delta-Sigma analog-to-digital converter product family simplifies a variety of applications.

Product Comparison Guide FeatureДў PDM microphones must be connected to the DRX0/IO5 pin.No Latency Delta-Sigma ADC Techniques for Optimized Performance It also provides a pulse density modulationВ (PDM) interface for direct connection of up to four PDM digital microphones.ДЇinally, the transceiver also supports an A 2B bus powering feature, where the master node supplies voltage and current to the slave nodes over the same daisy-chained, twisted pair wire cable as used for the communication link. The transceiver can connect directly to general-purpose digital signal processors (DSPs), field-programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), microphones, analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and codecs through a multichannel I 2S/TDM interface. An extension of this control port is embedded in the A 2B data stream, which grants direct access of registers and status information on slave transceivers as well as I 2C to I 2C communication over distance. TheВ master A 2B transceiver is programmable over a control portВ (I 2C) for configuration and read back. The master generatesВ clock, synchronization, and framing for all slave nodes. A 2B supports a direct point to point connection and allows multiple, daisy-chained nodes at different locations to contribute and/or consume time division multiplexed (TDM) channel content.ДЄ 2B is a single-master, multiple-slave system where the transceiver at the host controller is the master. It embeds bidirectional synchronous pulse-code modulation (PCM) data (for example, digital audio), clock, and synchronization signals onto a single differential wire pair. The Automotive Audio Bus (A 2B В®) provides a multichannel, I 2S/TDM link over distances of up to 15 m between nodes.

Low latency analog to digital video converter