The MAX186/MAX188 are 12-bit data acquisition systems that combine an 8-channel multiplexer, high-bandwidth track/hold, and serial interface together with high conversion speed and ultra-low power consumption.
The MAX186 and MAX188 are 12‑bit, low‑power data‑acquisition ADCs that combine an 8‑channel multiplexer, high‑bandwidth track‑and‑hold, and a 4‑wire serial interface. They operate from a single +5 V supply or dual ±5 V supplies, and support both internal (4.096 V) and external reference configurations.
These devices are suited for portable data logging, high‑accuracy process control, automatic testing, robotics, battery‑powered instruments, and medical equipment. Features include 133 kHz sampling, power‑down current under 10 µA, and compatibility with SPI, QSPI, Microwire, and TMS320‑family processors.
| Resolution | 12 bits |
|---|---|
| Number of Channels | 8 |
| Supply Voltage | Single +5 V or ±5 V |
| Operating Current | 1.5 mA |
| Power‑Down Current | 2 µA (typical) / <10 µA at reduced rate |
| Internal Reference (MAX186) | 4.096 V |
| External Reference (MAX188) | 4.096 V |
| Sampling Rate | 133 kHz |
| Serial Interface Speed | >4 MHz |
| Package Types | 20‑Pin DIP, SO, SSOP |
They operate from a single +5 V supply or dual ±5 V supplies.
The devices can achieve a power‑down current below 10 µA at reduced sampling rates.
The MAX186 includes an internal 4.096 V reference.
They support SPI‑, QSPI‑, Microwire‑, and TMS320‑compatible 4‑wire serial interfaces.