LHA5658-8

The LHA5658-8 is a low noise, fast settling, multiplexed, 8/16-channel (fully differential / pseudo-differential) Σ-Δ analog-to-digital converter for low-bandwidth input signals. It delivers a maximum channel scan rate of 50 kSPS (20 μs) for fully settled conversion data, with output data rates ranging from 5 SPS up to 250 kSPS. The LHA5658-8 integrates key analog and digital signal conditioning circuits, enabling independent parameter setup for each analog input channel via user configuration. Every function can be individually enabled or disabled per channel. True rail-to-rail buffers / pre-charge buffers are integrated on analog input and external reference pins, providing high-impedance inputs with low drive load demand. The embedded precision 2.5 V low-drift (3 ppm/℃) bandgap reference includes an output reference buffer, rich on-chip functions reduce external BOM component count. The digital filter supports simultaneous 50 Hz / 60 Hz mains rejection at an output rate of 27.27 SPS; users may switch multiple filter profiles according to each channel’s measurement requirements. The ADC hardware automatically cycles through all selected active channels. Additional digital processing modules include offset and gain calibration registers, configurable on a per-channel basis. The device supports single 5 V AVDD1/AVSS supply or ±2.5 V bipolar split supply, with nominal AVDD2 and IOVDD operating from 2 V to 5 V. Fully characterized over the industrial temperature range −40 ℃ to +125 ℃, the LHA5658-8 is packaged in a 40-lead QFN.

Data Sheet

User Manual

Application Note

Development Board Information