MAX146AEAP+

The MAX146AEAP+ is a +2.7V, low power, 8 channel, serial 12bit ADC in 20 pin SSOP package. This 12bit data acquisition system combines an 8-ch multiplexer, high bandwidth track/hold and serial interface with high conversion speed and low power consumption. It use an internal clock to perform successive approximation A/D 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 quick turn-on time allows it to be shut down between all conversions, this technique can cut supply current to under 60µA at reduced sampling rates. It is used in portable data logging, medical instruments, pen digitizers, data acquisition, battery powered instruments and process control.

• Supply voltage range is 2.7V to 3.6V
• Operating temperature range from -40°C to 85°C
• Operates at internal 2.5V reference
• 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
• Analogue I/P are software configurable for unipolar/bipolar and single ended/differential operation

Applications

Signal Processing, Portable Devices, Medical

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party