MAX157

The MAX157/MAX159 low-power, 10-bit analog-to-digi-tal converters (ADCs) are available in 8-pin µMAX and DIP packages. Both devices operate with a single
+2.7V to +5.25V supply and feature a 7.4µs succes-sive-approximation ADC, automatic power-down, fast wake-up (2.5µs), an on-chip clock, and a high-speed,3-wire serial interface.

Power consumption is only 3.2mW (VDD= +3.6V) at the maximum sampling rate of 108ksps. At slower through-put rates, the 0.2µA automatic shutdown further reduces power consumption.

The MAX157 provides 2-channel, single-ended opera-tion and accepts input signals from 0 to VREF. The MAX159 accepts pseudo-differential inputs ranging from 0 to VREF. An external clock accesses data through the 3-wire serial interface, which is SPI™,QSPI™, and MICROWIRE™ compatible.

Excellent dynamic performance and low power, com-bined with ease of use and a small package size, make these converters ideal for battery-powered and data acquisition applications, or for other circuits with demanding power-consumption and space require-ments. For pin-compatible 12-bit upgrades, see the MAX144/MAX145 data sheet.