pasterlevel.blogg.se - Low latency analog to digital video converter

#LOW LATENCY ANALOG TO DIGITAL VIDEO CONVERTER FULL#

Providing a high impedance input for the external referenceĭevice or in buffering any reference sense resistor scenarios

#LOW LATENCY ANALOG TO DIGITAL VIDEO CONVERTER FULL#

Input decreases the analog input current compared toĬompeting products, simplifying the task of an externalĪ full buffer input on the reference reduces the input current,

Within the AD7768-1 greatly reduces the design burden over theĮntire application range. When using the AD7768-1, embedded analog functionality

A low latency sinc3 filter that is fully programmable, with 50 Hz/60 Hz rejection capabilities.

A low latency sinc5 filter with up to a 1.024 MHz data rate to maximize control loop responsiveness.

A low ripple FIR filter with a ☐.005 dB pass-band ripple to 102.4 kHz.

The filter options include the following: Therefore, it is best suited for customers requiring minimum latency for control loops or implementing custom digital filtering on an external field programmable gate array (FPGA) or digital signal processor (DSP). All filters offer programmable decimation.Ī 1.024 MHz sinc5 filter path exists for users seeking an even higher ODR than is achievable using the low ripple FIR filter.

The filter options allow configuration for frequency domain measurements with tight gain error over frequency, linear phase response requirements (brick wall filter), a low latency path (sinc5 or sinc3) for use in control loop applications, and measuring dc inputs with the ability to configure the sinc3 filter to reject the line frequency of either 50 Hz or 60 Hz.

The AD7768-1 offers extensive digital filtering capabilities that meet a wide range of system requirements. Low power mode offers a FIR filter with up to 32 kSPS, 13.85 kHz of bandwidth and 6.75 mW of power consumption.Median mode offers a FIR filter with up to 128 kSPS, 55.4 kHz of bandwidth and 19.7 mW of power consumption.Fast mode offers both a sinc filter with up to 256 kSPS and 52.2 kHz of bandwidth, and 26.4 mW of power consumption, or a FIR filter with up to 256 kSPS, 110.8 kHz of bandwidth and 36.8 mW of power consumption.The following three operating modes allow the user to trade off the input bandwidth vs. The AD7768-1 achieves the optimum balance of dc and ac performance with excellent power efficiency. The design of the AD7768-1 is unique in that it becomes a reusable and flexible platform for low power dc and high performance ac measurement modules. The selection of one of three available power modes allows the designer to achieve required noise targets while minimizing power consumption. The flexibility of the AD7768-1 allows dynamic analysis of a changing input signal, making the device particularly useful in general-purpose DAQ systems. The AD7768-1 offers the user the flexibility to configure and optimize for input bandwidth vs. The AD7768-1 achieves a 108.5 dB dynamic range when using the low ripple, finite impulse response (FIR) digital filter at 256 kSPS, giving 110.8 kHz input bandwidth, combined with ☑.1 ppm integral nonlinearity (INL), ☓0 µV offset error, and ☓0 ppm gain error.Ī wider bandwidth, up to 500 kHz Nyquist (filter −3 dB point of 204 kHz), is available using the sinc5 filter, enabling a view of signals over an extended range. The AD7768-1 provides a single configurable and reusable data acquisition (DAQ) footprint, which establishes a new industry standard in combined ac and dc performance and enables instrumentation and industrial system designers to design across multiple measurement variants for both isolated and nonisolated applications. The AD7768-1 is a single-channel version of the AD7768, an 8-channel, simultaneously sampling, Σ-Δ ADC. The AD7768-1 is a low power, high performance, Σ-Δ analog-to-digital converter (ADC), with a Σ-Δ modulator and digitalįilter for precision conversion of both ac and dc signals.