Convertor cuts out pipeline delays
A fully integrated, dual sampling, 2Msample/s 14bit ADC is designed for high-end dual-channel applications that demand low-noise high-performance operation
C and D Technologies has launched a fully integrated, dual sampling, 2Msample/s 14bit ADC for high-end dual-channel applications that demand low-noise high-performance operation. Available in commercial and military temperature range options, the new Datel ADSD-1402S ADC is a compact, low-power device that delivers 'no-missing-code' performance over the full operating temperature range.
The ADSD-1402S is supplied in a low-cost, functionally complete 40-pin SMT TDIP package incorporating an 'out-of-range' indicator and all of the timing and control logic necessary to operate from a single edge-triggered 'start convert' pulse.
Output data are provided with none of the pipeline delays typically associated with high-resolution monolithic multipass convertors.
Such delays cannot be tolerated in many time-critical, high-end applications.
C and D's new ADC is suitable for a wide variety of high-end medical, industrial, scientific and military imaging applications, as well as dual-channel I/Q (in-phase and quadrature) applications used in communications, radar and sonar systems.
In addition, a large-signal input bandwidth of 12MHz makes the ADSD-1402S ideal for wideband, multichannel spectrum and FFT-based applications.
The ADSD-1402S is based on a proprietary gate array and a design that ensures excellent dynamic performance by optimising signal return paths and providing internal, local decoupling.
As a result, typical RMS noise level is rated at just 250uV, and the signal-to-noise ratio (SNR) - one of the most important specifications for imaging applications - is 80dB.
Along with all the necessary timing and control logic to operate from either single or double start convert pulses, the new ADC contains two fast-settling sample/hold amplifiers, two 14bit ADCs, multiplexed output buffers, and a precision reference.
The device operates from +/-5V supplies with a power consumption of just 600mW, and is available in options for use over both the commercial (0 to 70C) and military (-55 to 125C) temperature ranges.
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