AD7616BSTZ

The AD7616 is a 16-bit DAS that supports dual simultaneous sampling of 16 channels. Operating from a 5 V single supply, it can handle ±10 V, ±5 V, and ±2.5 V true bipolar input signals, with each channel pair sampling at throughput rates up to 1 MSPS and 90.5 dB SNR. Higher SNR performance is achievable using the on-chip oversampling mode (SNR of 92 dB at OSR of 2). The input clamp protection circuit can withstand voltages up to ±21 V. The AD7616 presents an analog input impedance of 1 MΩ regardless of the sampling frequency. Its single-supply operation, on-chip filtering, and high input impedance eliminate the need for drive op-amps and external bipolar supplies. The device integrates analog input clamp protection, a dual 16-bit charge redistribution SAR ADC, a flexible digital filter, a 2.5 V voltage reference and reference buffer, and high-speed serial and parallel interfaces. The AD7616 is compatible with SPI/QSPI/DSP/MICROWIRE.

Applications

• Power line monitoring
• Protection relays
• Multi-phase motor control
• Instrumentation and control systems
• Data acquisition systems (DAS)

Key features

• 16-channel, dual, simultaneous sampling input
• Per-channel selectable true bipolar input range: ±10 V, ±5 V, ±2.5 V
• 5 V single analog supply, VDRIVE supply voltage: 2.3 V to 3.6 V
• Fully integrated data acquisition solution
• Analog input clamp protection
• Input buffer with 1 MΩ analog input impedance
• First-order antialiasing analog filter
• On-chip precision reference and reference buffer
• Dual-channel 16-bit SAR ADC
• Throughput rate: 2×1 MSPS
• Oversampling via digital filter
• Flexible sequencer with burst mode support
• Flexible parallel/serial interface
• SPI/QSPI/MICROWIRE/DSP compatible
• Optional CRC error checking
• Hardware/software configurable
• SNR: 92 dB (500 kSPS, 2× oversampling)
• SNR: 90.5 dB (1 MSPS)
• THD: −103 dB
• ±1 LSB INL (typical), ±0.99 LSB DNL (maximum)
• 8 kV ESD rating on analog input channels
• On-chip self-test function
• 80-lead LQFP package