DESCRIPTION
The LTC®1860L/LTC1861L are 12-bit A/D converters that are offered in MSOP and SO-8 packages and operate on a single 3V supply. At 150ksps, the supply current is only 450µA. The supply current drops at lower speeds because the LTC1860L/LTC1861L automatically power down between conversions. These 12-bit switched capacitor successive approximation ADCs include sample-and-holds. The LTC1860L has a differential analog input with an external reference pin. The LTC1861L offers a softwareselectable 2-channel MUX and an external reference pin on the MSOP version.

FEATURES
■ 12-Bit 150ksps ADCs in MSOP Package
■ Single 3V Supply
■ Low Supply Current: 450µA (Typ)
■ Auto Shutdown Reduces Supply Current to 10µA at 1ksps
■ True Differential Inputs
■ 1-Channel (LTC1860L) or 2-Channel (LTC1861L) Versions
■ SPI/MICROWIRETM Compatible Serial I/O
■ High Speed Upgrade to LTC1285/LTC1288
■ Pin Compatible with 16-Bit LTC1864L/LTC1865L
■ No Minimum Data Transfer Rate

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