GENERAL DESCRIPTION
The MAX1280/MAX1281 12-bit ADCs combine an 8-channel analog-input multiplexer, high-bandwidth track/hold, and serial interface with high conversion speed and low power consumption. The MAX1280 operates from a single +4.5V to +5.5V supply; A serial strobe output allows direct connection to TMS320-family digital signal processors. The MAX1280/ MAX1281 use an external serial-interface clock to perform successive-approximation analog-to-digital conversions. Both parts feature an internal +2.5V reference and a reference-buffer amplifier with a ±1.5% voltageadjustment range. An external reference with a 1V to VDD1 range may also be used. The MAX1280/MAX1281 provide a hard-wired SHDN pin and four software-selectable power modes (normal operation, reduced power, fast power-down, and full power-down). These devices can be programmed to automatically shut down at the end of a conversion or to operate with reduced power. When using the powerdown modes, accessing the serial interface automatically powers up the devices, and the quick turn-on time allows them to be powered down between all conversions.
Maxim Integrated
