Eight channels, 16 bits, 250 ksps — simultaneous capture
The MAX11049ETN+ from Maxim Integrated is a 16-bit successive-approximation-register (SAR) ADC that samples eight single-ended inputs simultaneously at 250k samples per second per channel. Each of the eight internal A/D converters has its own sample-and-hold, so all channels capture the same instant — no skew from multiplexing. That matters for applications like three-phase power monitoring, multi-axis vibration analysis, or simultaneous voltage/current measurements where the phase relationship between channels has to be preserved.
What the 250 ksps and 16 bits mean for your measurement
At 250 ksps per channel, the converter can digitize a 125 kHz bandwidth signal (Nyquist) per channel while all eight run concurrently. The 16-bit resolution gives a theoretical dynamic range of about 96 dB — enough to resolve microvolt-level changes on a 5 V full-scale input without an external amplifier. The SAR architecture means no pipeline latency: the output code for a given sample is available on the parallel bus within one conversion cycle, which simplifies real-time control loops.
Package and layout — the 56-TQFN exposed pad
The MAX11049ETN+ comes in a 56-lead TQFN with an exposed pad (8x8 mm body). The pad must be soldered to a thermal land on the PCB and connected to the analog ground plane with multiple vias — this is the primary heat path. The part draws its analog supply from a single 5 V rail and the digital interface from 2.7 V to 5.25 V, so it can talk directly to 3.3 V or 5 V logic without level shifters. Surface-mount assembly with a standard reflow profile works; no special bake is required if the moisture-barrier bag seal is intact.
Lifecycle and sourcing
Maxim lists the MAX11049ETN+ as Active. The part is ROHS3 compliant.