MAXIM MAX1295BEEI+T

The MAX1295/MAX1297 low-power, 12-bit analog-to-digital converters (ADCs) feature a successive-approximation ADC, automatic power-down, fast wake-up (2µs), an on-chip clock, +2.5V internal reference, and a high-speed 12-bit parallel interface. They operate with a single +2.7V to +3.6V analog supply. Power consumption is only 5.4mW at the maximum sampling rate of 265ksps. Two software-selectable power-down modes enable the MAX1295/MAX1297 to be shut down between conversions; accessing the parallel interface returns them to normal operation. Powering down between conversions can reduce supply current 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 MAX1295 has six input channels and the MAX1297 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 power-consumption and space requirements.

• 12-Bit Resolution, ±0.5 LSB Linearity
• ±3V Single-Supply Operation
• Internal +2.5V Reference
• Software-Configurable Analog Input Multiplexer 6-Channel Single-Ended/ 3-Channel Pseudo-Differential (MAX1295) 2-Channel Single-Ended/ 1-Channel Pseudo-Differential (MAX1297)
• Software-Configurable Unipolar/Bipolar Analog Inputs
• Low Current 1.9mA (265ksps) 1.0mA (100ksps) 400µA (10ksps) 2µA (Shutdown)
• Internal 3MHz Full-Power Bandwidth Track/Hold
• Parallel 12-Bit Interface
• Small Footprint 28-Pin QSOP (MAX1295) 24-Pin QSOP (MAX1297)

• Industrial Control Systems
• Data Logging
• Energy Management
• Patient Monitoring
• Data-Acquisition Systems
• Touchscreens