AD7874BRZ

AD7874BRZ is a four-channel simultaneous sampling, 12bit data acquisition system. The part contains a high-speed 12bit ADC, on-chip reference, on-chip clock and four-track/hold amplifiers. This latter feature allows the four input channels to be sampled simultaneously, thus preserving the relative phase information of the four input channels, which is not possible if all four channels share a single track/hold amplifier. This makes the device ideal for applications such as phased-array sonar and AC motor controllers where the relative phase information is important. The aperture delay of the four track/hold amplifiers is small and specified with minimum and maximum limits. This allows several devices to sample multiple input channels simultaneously without incurring phase errors between signals connected to several devices. Applications include sonar, motor controllers, adaptive filters, digital signal processing.

• Four on-chip track/hold amplifiers, simultaneous sampling of 4 channels
• 500KHz typical -3dB small signal bandwidth at (VIN = 500mV p-p, VDD = +5V, VSS = -5V)
• Aperture jitter is 200ps typical at (VDD = +5V, VSS = -5V)
• Signal-to-noise ratio is 71dB minimum at (fIN = 10KHz sine wave, fSAMPLE = 29KHz)
• Total harmonic distortion is -80dB maximum at (fIN = 10KHz sine wave, fSAMPLE = 29KHz)
• Differential nonlinearity is ±1LSB maximum at (VDD = +5V, VSS = -5V)
• Power dissipation is 150mW maximum at (VDD = +5V, VSS = -5V)
• Acquisition time to 0.01% is 2µs maximum at (VDD = +5V, VSS = -5V)
• Analog input current is ±600µA maximum at (VDD = +5V, VSS = -5V)
• Operating temperature range from -40°C to +85°C, SOIC package

注释

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party