DESCRIPTION
The LTC®1860/LTC1861 are 12-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 LTC1860/LTC1861 automatically power down to a typical supply current of 1nA between conversions. These 12-bit switched capacitor successive approximation ADCs include sample-and-holds. The LTC1860 has a differential analog input with an adjustable reference pin. The LTC1861 offers a software-selectable 2-channel MUX and an adjustable reference pin on the MSOP version.

FEATURES
■ 12-Bit 250ksps ADCs in MSOP Package
■ Single 5V Supply
■ Low Supply Current: 850µA (Typ)
■ Auto Shutdown Reduces Supply Current to 2µA at 1ksps
■ True Differential Inputs
■ 1-Channel (LTC1860) or 2-Channel (LTC1861) Versions
■ SPI/MICROWIRETM Compatible Serial I/O
■ High Speed Upgrade to LTC1286/LTC1298
■ Pin Compatible with 16-Bit LTC1864/LTC1865

APPLICATIONS
■ High Speed Data Acquisition
■ Portable or Compact Instrumentation
■ Low Power Battery-Operated Instrumentation
■ Isolated and/or Remote Data Acquisition