LTC1860 - µPower, 12-Bit, 250ksps 1- and 2-Channel ADCs in MSOP

The LTC1860/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.

The 3-wire, serial I/O, MSOP or SO-8 package and extremely high sample rate-to-power ratio make these ADCs ideal choices for compact, low power, high speed systems.

These ADCs can be used in ratiometric applications or with external references. The high impedance analog inputs and the ability to operate with reduced spans down to 1V full scale, allow direct connection to signal sources in many applications, eliminating the need for external gain stages.

Features
  • 12-Bit 250ksps ADC 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/MICROWIRE™ Compatible Serial I/O
  • High Speed Upgrade to LTC1286/LTC1298
  • Pin Compatible with 16-Bit LTC1864/LTC1865
  • Guaranteed Operation to 125°C (MSOP Package)
Typical Application
LTC1860 Typical Application
LTC1860 Typical Application
Applications
  • High Speed Data Acquisition
  • Portable or Compact Instrumentation
  • Low Power Battery-Operated Instrumentation
  • Isolated and/or Remote Data Acquisition
Packaging
LTC1860 Package Drawing
LTC1860 Package Drawing
LTC1860 Package Drawing
LTC1860 Package Drawing
Order Information
Part NumberPackageTempPrice(1-99)Price (1k)*
LTC1860CMS8#PBFMS-8C$3.00$2.35
LTC1860CMS8#TRPBFMS-8C$2.41
LTC1860CS8#PBFSO-8C$2.90$2.30
LTC1860CS8#TRPBFSO-8C$2.36
LTC1860HMS8#PBFMS-8H$5.20$2.91
LTC1860HMS8#TRPBFMS-8H$2.97
LTC1860IMS8#PBFMS-8I$3.40$2.65
LTC1860IMS8#TRPBFMS-8I$2.71
LTC1860IS8#PBFSO-8I$3.30$2.60
LTC1860IS8#TRPBFSO-8I$2.66
Datasheet
Reliability Data
LT Journal
CAD Symbol
Related Products
LTC1860/LTC1861 - µPower, 12-Bit, 250ksps 1- and 2-Channel ADCs in MSOP
R380 Reliability Data
Mar 2002 250ksps 16-Bit ADC in a Tiny MSOP Package Offers an Excellent Combination of Speed, Power and Size
LTC1860 Footprints and Symbols