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
â– 12-Bit 250ksps ADCs in MSOP Package
â– Single 5V Supply
■Low Supply Current: 850µA (Typ)
■Auto Shutdown Reduces Supply Current to 2µA at 1ksps
â– True Differential Inputs
â– 1-Channel (LTC1860) or 2-Channel (LTC1861) Versions
â– SPI/MICROWIRETM Compatible Serial I/O
â– High Speed Upgrade to LTC1286/LTC1298
â– Pin Compatible with 16-Bit LTC1864/LTC1865
APPLICATIONS
â– High Speed Data Acquisition
â– Portable or Compact Instrumentation
â– Low Power Battery-Operated Instrumentation
â– Isolated and/or Remote Data Acquisition