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; the MAX1281 operates from a single +2.7V to +3.6V supply. Both devices' analog inputs are software configurable for unipolar/bipolar and single-ended/pseudo-differential operation. The 4-wire serial interface connects directly to SPI™/QSPI™/MICROWIRE™ devices without external logic. 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% voltage-adjustment range. An external reference with a 1V to VDD1 range may also be used. The MAX1280/MAX1281 provide a hard-wired active-low 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 power-down 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. This technique can cut supply current to under 100µA at reduced sampling rates. The MAX1280/MAX1281 are available in 20-pin TSSOP packages. These devices are higher-speed versions of the MAX146/MAX147 (for more information, see the respective data sheet). Applications * Battery-Powered Applications * Data Acquisition * Medical Instruments * Pen Digitizers * Portable Data Logging * Process Control * 8-Channel Single-Ended or 4-Channel Pseudo-Differential Inputs * Internal Multiplexer and Track/Hold * Single-Supply Operation * +4.5V to +5.5V (MAX1280) * +2.7V to +3.6V (MAX1281) * Internal +2.5V Reference * 400ksps Sampling Rate (MAX1280) * Low Power 2.5mA (400ksps) * 1.3mA (Reduced-Power Mode) * 0.9mA (Fast Power-Down Mode) * 2µA (Full Power-Down) * SPI/QSPI/MICROWIRE/TMS320-Compatible * 4-Wire Serial Interface * Software-Configurable Unipolar or Bipolar Inputs * 20-Pin TSSOP Package https://elecena.pl/product/22314244/400ksps-300ksps-single-supply-low-power-8-channel-serial-12-bit-adcs-with-internal-reference 2022-12-27 https://elecena.pl/product/22314244/400ksps-300ksps-single-supply-low-power-8-channel-serial-12-bit-adcs-with-internal-reference 2025-01-17