MAX1294

 12-Bit Resolution, ±0.5LSB Linearity
Single +5V Operation
Internal +2.5V Reference
Software-Configurable Analog Input Multiplexer 6-Channel Single-Ended/ 3-Channel Pseudo-Differential (MAX1294) 2-Channel Single-Ended/ 1-Channel Pseudo-Differential (MAX1296)
Software-Configurable Unipolar/Bipolar Analog Inputs
Low Current 2.0mA (420ksps) 1.0mA (100ksps) 400µA (10ksps) 2µA (shutdown)
Internal 6MHz Full-Power Bandwidth Track/Hold
Parallel 12-Bit Interface
 Small Footprint 28-Pin QSOP (MAX1294) 24-Pin QSOP (MAX1296)

The MAX1294/MAX1296 low-power, 12-bit analog-todigital converters (ADCs) feature a successive-approximation ADC, automatic power-down, fast wake-up (2µs), on-chip clock, +2.5V internal reference, and high-speed 12-bit parallel interface. They operate with a single +5V analog supply.

Power consumption is only 10mW at the maximum sampling rate of 420ksps. Two software-selectable powerdown modes enable the MAX1294/MAX1296 to be shut down between conversions; accessing the parallel interface returns them to normal operation. Powering down between conversions can reduce supply below 10µA at lower sampling rates.

Both devices offer software-configurable analog inputs for unipolar/bipolar and single-ended/pseudo-differential operation. In single-ended mode, the MAX1294 has six input channels and the MAX1296 has two (three input channels and one input channel, respectively, when in pseudo-differential mode).

Excellent dynamic performance and low power combined with ease of use and small package size make these converters ideal for battery-powered and data-acquisition applications or for other circuits with demanding powerconsumption and space requirements. The MAX1294 is offered in a 28-pin QSOP package, while the MAX1296 is available in a 24-pin QSOP. For pin-compatible +3V, 12-bit versions, see the MAX1295/MAX1297.