Legendsemi LHA6916BDFLS

The LHA6916 is a 16-bit DAS supporting dual simultaneous sampling across 16 channels. Operating from a 5 V single supply, it handles ±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. The input clamp protection circuit withstands voltages up to ±25 V. Regardless of the sampling frequency, the LHA6916 provides a minimum analog input impedance of 1 MΩ. Single-supply operation with on-chip filtering and high input impedance eliminates the need for driver 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 with reference buffer, and high-speed serial and parallel interfaces. The LHA6916 is compatible with SPI/QSPI/DSP/MICROWIRE.

• 16-channel, dual, simultaneous sampling inputs
• Independently selectable channel input ranges — true bipolar: ±10 V, ±5 V, ±2.5 V
• 5 V single analog supply, V_DRIVE supply voltage 2.3 V to 3.6 V
• Fully integrated data acquisition solution — analog input clamp protection — input buffers with minimum 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
• Performance — SNR: 90.5 dB (1 MSPS) — THD: −103 dB — ±1 LSB INL (typical), ±0.99 LSB DNL (maximum) — 7 kV ESD rating on analog input channels
• On-chip self-test functionality
• 80-lead LQFP package

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