The MAX146ACAP+ is a +2.7V, low power, 8-channel, serial 12bit analogue to digital converter (ADC) in 20 pin SSOP package. This 12bit data acquisition system combine an 8-channel multiplexer, high bandwidth track/hold and serial interface with high conversion speed and low power consumption. The analogue inputs are software configurable for unipolar/bipolar and single ended/differential operation. This device use either the internal clock or an external serial interface clock to perform successive approximation analogue to digital conversion and have a reference buffer amplifier with a ±1.5% voltage adjustment range. It provides a hard wired SHDN (complimentary) pin, a software selectable power-down feature which can be programmed to automatically shut down at the end of a conversion. Accessing the serial interface automatically powers up the device and the quick turn-on time allows it to be shut down between all conversions.
Supply voltage range is 2.7V to 3.6V
Operating temperature range from 0°C to 70°C
Operates at internal 2.5V reference or external reference voltage
Low power consumption of 1.2mA at 133Ksps and 54μA at 1Ksps, 3V supply
Low power consumption of 1μA at power down mode
SPI/QSPI/MICROWIRE/TMS320 compatible 4 wire serial interface
Maximum relative accuracy (INL) is ±0.5LSB and maximum differential nonlinearity (DNL) is ±1LSB
Gain temperature coefficient is ±0.25ppm/°C
Accessing serial interface for on/off can cut supply current under 60μA at reduced sampling rates
(EN)
