The MAX1358/MAX1359/MAX1360 smart data-acquisition systems (DAS) are each based on a 16-bit, sigma-delta analog-to-digital converter (ADC) and system-support functionality for a microprocessor (µP)-based system. These devices integrate an ADC, DACs, operational amplifiers, internal 1.25V/2.048V/2.5V selectable reference, temperature sensors, analog switches, a 32kHz oscillator, a real-time clock (RTC) with alarm, a high-frequency-locked loop (FLL) clock, four user-programmable I/Os, an interrupt generator, and 1.8V and 2.7V voltage monitors in a single chip.
The MAX1358, MAX1359 and MAX1360 smart data‑acquisition systems combine a 16‑bit sigma‑delta ADC with DACs, operational amplifiers, a real‑time clock, voltage monitors and programmable I/Os in a single 40‑pin TQFN package. They operate from a single +1.8 V to +3.6 V supply and support SPI/QSPI or MICROWIRE serial interfaces.
Key features include dual 10:1 differential input multiplexers, a programmable‑gain amplifier (1‑8×), selectable internal references (1.25 V, 2.048 V, 2.5 V), temperature sensors, and low‑power operation (1.4 mA normal mode, 6.1 µA sleep mode). The devices target battery‑powered portable equipment, electro‑chemical and optical sensors, medical instruments, industrial control and general data‑acquisition applications.
| Supply Voltage Range | +1.8 V to +3.6 V |
|---|---|
| Sleep‑Mode Current | 6.1 µA |
| Resolution | 16‑bit |
| Conversion Rate | 10 sps to 512 sps |
| Package | 40‑pin TQFN (6 mm × 6 mm × 0.8 mm) |
The devices operate from a single supply voltage of +1.8 V to +3.6 V.
In sleep mode the part consumes only 6.1 µA.
The serial interface is compatible with SPI™/QSPI™ or MICROWIRE™.
MAX1358 has two DACs with one uncommitted op‑amp; MAX1359 has one DAC with two uncommitted op‑amps; MAX1360 has three uncommitted op‑amps.