The MAX1393/MAX1396 are micropower, serial-output, 12-bit analog-to-digital converters (ADCs) that operate with a single power supply from +1.5V to +3.6V. These ADCs feature automatic shutdown, fast wake-up, and a high-speed 3-wire interface. Power consumption is only 0.734mW (VDD = +1.5V) at the maximum conversion rate of 312.5ksps. AutoShutdown™ between conversions reduces power consumption at slower throughput rates. The MAX1393/MAX1396 require an external reference VREF that has a wide range from 0.6V to VDD. The MAX1393 provides one true-differential analog input that accepts signals ranging from 0 to VREF (unipolar mode) or ±VREF/2 (bipolar mode). The MAX1396 provides two single-ended inputs that accept signals ranging from 0 to VREF. Analog conversion results are available through a 5MHz 3-wire SPI™-/QSPI™-/MICROWIRE™-/digital signal processor (DSP)-compatible serial interface. Excellent dynamic performance, low voltage, low power, ease of use, and small package sizes make these converters ideal for portable battery-powered data-acquisition applications, and for other applications that demand low power consumption and minimal space. The MAX1393/MAX1396 are available in a space-saving (3mm x 3mm) 10-pin TDFN package or 10-pin µMAX® package. The parts operate over the extended (-40°C to +85°C) and military (-55°C to +125°C) temperature ranges.
The MAX1393 and MAX1396 are micropower, serial‑output, 12‑bit SAR analog‑to‑digital converters that operate from a single supply of 1.5 V to 3.6 V. They offer automatic shutdown, fast wake‑up, and a high‑speed 3‑wire interface, making them suitable for portable data‑acquisition, medical instruments, and battery‑powered devices. The devices are available in compact 10‑pin TDFN or uMAX packages and cover a wide temperature range.
The datasheet provides absolute maximum ratings, detailed electrical and timing characteristics, pin functions, and package dimensions. It also lists typical performance figures such as conversion rate, power consumption, input ranges, and shutdown current, along with application notes and reference circuit diagrams.
| Power Consumption at 1.5 V | 0.734 mW |
|---|---|
| Package Options | 10‑pin TDFN (3 mm × 3 mm) or 10‑pin uMAX (3 mm × 5 mm) |
| Input Voltage Range | 0 to VREF (unipolar) or ±VREF/2 (bipolar) |
The devices operate from –40 °C to +85 °C for commercial grades and –55 °C to +125 °C for military grades.
The shutdown current is less than 1 pA.
Pin 5 is the external reference voltage input (VREF).