LTC1198

LTC1196/LTC1198 8-Bit, SO-8, 1Msps ADCs with Auto-Shutdown Options FEATURES n High Sampling Rates: 1MHz (LTC1196) 750kHz (LTC1198) n Low Cost n Single Supply 3V and 5V Specifications n Low Power: 10mW at 3V Supply 50mW at 5V Supply n Auto-Shutdown: 1nA Typical (LTC1198) n ±1/2LSB Total Unadjusted Error over Temperature n 3-Wire Serial I/O n 1V to 5V Input Span Range (LTC1196) n Converts 1MHz Inputs to 7 Effective Bits n Differential Inputs (LTC1196) n 2-Channel MUX (LTC1198) n SO-8 Plastic Package APPLICATIONS n High Speed Data Acquisition n Disk Drives n Portable or Compact Instrumentation n Low Power or Battery-Operated Systems DESCRIPTION The LTC®1196/LTC1198 are 600ns, 8-bit A/D converters with sampling rates up to 1MHz. They are offered in 8-pin SO packages and operate on 3V to 6V supplies. Power dissipation is only 10mW with a 3V supply or 50mW with a 5V supply. The LTC1198 automatically powers down to a typical supply current of 1nA whenever it is not performing conversions. These 8-bit switched-capacitor successive approximation ADCs include sample-andholds. The LTC1196 has a differential analog input; the LTC1198 offers a software selectable 2-channel MUX. The 3-wire serial I/O, SO-8 packages, 3V operation and extremely high sample rate-to-power ratio make these ADCs an ideal choice for compact, 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 ...