AD7874BNZ

AD7874BNZ is a LC²MOS 4-channel, 12-bit simultaneous sampling data acquisition system. The part contains a high speed 12-bit 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. It is used in applications such as 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 (VDD = +5V, VSS = -5V)
• Acquisition time is 2µs maximum at (VDD = +5V, VSS = -5V)
• Signal-to-noise ratio is 71dB minimum at (fIN = 10KHz sine wave, fSAMPLE = 29KHz)
• Relative accuracy is ±1/2LSB maximum at (VDD = +5V, VSS = -5V)
• Differential nonlinearity is ±1LSB maximum at (VDD = +5V, VSS = -5V)
• Input voltage range is ±10V, input current is ±600µA maximum
• Total harmonic distortion is -80dB maximum at (fIN = 10KHz sine wave, fSAMPLE = 29KHz)
• Operating temperature range from -40°C to +85°C, 28-pin plastic package

附註

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