LTC1865

FEATURES n 16-Bit 250ksps ADCs in MSOP Package n Single 5V Supply n Low Supply Current: 850μA (Typ) n Auto Shutdown Reduces Supply Current to 2μA at 1ksps n True Differential Inputs n 1-Channel (LTC1864) or 2-Channel (LTC1865) Versions n SPI/MICROWIRE™ Compatible Serial I/O n 16-Bit Upgrade to 12-Bit LTC1286/LTC1298 n Pin Compatible with 12-Bit LTC1860/LTC1861 n Guaranteed Operation to +125°C (MSOP Package) APPLICATIONS n High Speed Data Acquisition n Portable or Compact Instrumentation n Low Power Battery-Operated Instrumentation n Isolated and/or Remote Data Acquisition L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. TYPICAL APPLICATION Single 5V Supply, 250ksps, 16-Bit Sampling ADC 1μF 5V ANALOG INPUT 0V TO 5V LTC1864 1 VREF 2 IN+ 8 VCC 7 SCK 3 IN– 6 SDO 4 GND CONV 5 18645 TA01 SERIAL DATA LINK TO ASIC, PLD, MPU, DSP OR SHIFT REGISTERS LTC1864/LTC1865 µPower, 16-Bit, 250ksps 1- and 2-Channel ADCs in MSOP DESCRIPTION The LTC®1864/LTC1865 are 16-bit A/D converters that are offered in MSOP and SO-8 packages and operate on a single 5V supply. At 250ksps, the supply current is only 850μA. The supply current drops at lower speeds because the LTC1864/LTC1865 automatically power down between conversions. These 16-bit switched capacitor successive approximation ADCs include sample-andholds. The LTC1864 has a differential analog input with an adjustable reference pin. The LTC...