12-Bit ADCs Fit In QSOP Packages

Designed for portable data acquisition and battery-powered applications, the MAX1290-MAX1297 parallel interfaces are 12-bit A/D converters that have samples rates as high as 420 ksps and fit in QSOP packages. The complete product family offers 8-bit and 12-bit interface options, 3V or 5V single-supply operation, an internal reference, and 2, 4, 6 or 8 input channels. The analog inputs are software configurable for unipolar/bipolar and single-ended/differential operation. The full-scale analog input range is determined by the internal 2.5V reference, or by an externally applied reference in the 1V to VDD range. The parts also feature V_LOGIC pin and are claimed as the only parallel 12-bit ADCs able to interface directly with 1.8V to 5V digital supplies. Consuming only 1.5 mA at a sample rate of 100 ksps, the devices’ software power-down mode reduces supply current to less than 10 µA at slower sampling rates.