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LTC1198-2BCS8-TRPBF Datasheet(PDF) 1 Page - Linear Technology |
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LTC1198-2BCS8-TRPBF Datasheet(HTML) 1 Page - Linear Technology |
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1 / 28 page  LTC1196/LTC1198 1 119698fa TYPICAL APPLICATION FEATURES APPLICATIONS DESCRIPTION 8-Bit, SO-8, 1Msps ADCs with Auto-Shutdown Options Single 5V Supply, 1Msps, 8-Bit Sampling ADC n High Speed Data Acquisition n Disk Drives n Portable or Compact Instrumentation n Low Power or Battery-Operated Systems L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. 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 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-and-holds. The LTC1196 has a differential analog input; the LTC1198 of- fers 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 in- puts and the ability to operate with reduced spans below 1V full scale (LTC1196) allow direct connection to signal sources in many applications, eliminating the need for gain stages. The A grade devices are specified with total unadjusted error of ±1/2LSB maximum over temperature. Effective Bits and S/(N + D) vs Input Frequency INPUT FREQUENCY (Hz) 1k 8 7 6 5 4 3 2 1 0 10k 100k 1M 1196/98 G24 50 44 VREF =VCC = 2.7V fSMPL = 383kHz (LTC1196) fSMPL = 287kHz (LTC1198) VREF =VCC = 5V fSMPL = 1MHz (LTC1196) fSMPL = 750kHz (LTC1198) TA = 25°C 5V 1μF ANALOG INPUT 0V TO 5V RANGE 1196/98 TA01 SERIAL DATA LINK TO ASIC, PLD, MPU, DSP, OR SHIFT REGISTERS –IN GND VCC CLK DOUT +IN CS 1 2 3 4 8 7 6 5 LTC1196 VREF |
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