AD7654ASTZ

AD7654 is a low cost, simultaneous sampling, dual-channel, 16bit, charge redistribution SAR, analogue to digital converter that operates from a single 5V power supply. It contains two low noise, wide bandwidth, track-and-hold amplifiers that allow simultaneous sampling, a high speed 16-bit sampling ADC, an internal conversion clock, error correction circuits and both serial and parallel system interface ports. Each track-and-hold has a multiplexer in front to provide a 4-channel input ADC. The A0 multiplexer control input allows the choice of simultaneously sampling input pairs INA1/INB1 (A0 = low) or INA2/INB2 (A0 = high). The part features a very high sampling rate mode (normal) and for low power applications, a reduced power mode (impulse) where the power is scaled with the throughput. Typical applications include AC motor control, 3-phase power control, 4-channel data acquisition, uninterrupted power supplies and communications.

• Dual, 16bit, 2-channel simultaneous sampling ADC
• Throughput:: 500KSPS (normal mode) and 444KSPS (impulse mode)
• INL: ±3.5 LSB max (±0.0053% of full scale)
• SNR: 89dB typ at 100KHz and THD: -100dB at +100KHz
• Analog input voltage range: 0V to 5V
• No pipeline delay
• Parallel and serial 5V/3V interface and SPI®/QSPI™/MICROWIRE™/DSP compatible
• Power dissipation: 120mW typical and 2.6mW at 10KSPS
• 48 lead LQFP package
• Operating temperature range from -40 to 85°C

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