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LTC1098L Datasheet(PDF) 1 Page - Linear Technology |
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LTC1098L Datasheet(HTML) 1 Page - Linear Technology |
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1 / 32 page  LTC1096/LTC1096L LTC1098/LTC1098L 1 10968fc TYPICAL APPLICATION DESCRIPTION Micropower Sampling 8-Bit Serial I/O A/D Converters The LTC®1096/LTC1096L/LTC1098/LTC1098L are micropower, 8-bit A/D converters that draw only 80μA of supply current when converting. They automatically power down to 1nA typical supply current whenever they are not performing conversions. They are packaged in 8-pin SO packages and have both 3V (L) and 5V versions. These 8-bit, switched-capacitor, successive approximation ADCs include sample-and-hold. The LTC1096/LTC1096L have a single differential analog input. The LTC1098/LTC1098L offer a software selectable 2-channel MUX. On-chip serial ports allow efficient data transfer to a wide range of microprocessors and microcontrollers over three wires. This, coupled with micropower consumption, makes remote location possible and facilitates transmitting data through isolation barriers. These circuits can be used in ratiometric applications or with an external reference. The high impedance analog inputs and the ability to operate with reduced spans (be- low 1V full scale) allow direct connection to sensors and transducers in many applications, eliminating the need for gain stages. L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. FEATURES APPLICATIONS n 80μA Maximum Supply Current n 1nA Typical Supply Current in Shutdown n 5V Operation (LTC1096/LTC1098) n 3V Operation (LTC1096L/LTC1098L)(2.65V Min) n Sample-and-Hold n 16μs Conversion Time n 33kHz Sample Rate n ±0.5LSB Total Unadjusted Error Over Temp n Direct 3-Wire Interface to Most MPU Serial Ports and All MPU Parallel I/O Ports n 8-Pin SO Plastic Package n Battery-Operated Systems n Remote Data Acquisition n Battery Monitoring n Battery Gas Gauges n Temperature Measurement n Isolated Data Acquisition Supply Current vs Sample Rate 10μW, S8 Package, 8-Bit A/D Samples at 200Hz and Runs Off a 5V Battery 5V 1μF ANALOG INPUT 0V TO 5V RANGE –IN GND VCC CLK DOUT VREF LTC1096 MPU (e.g., 8051) P1.4 P1.3 P1.2 +IN 10968 TA01 CS/ SHUTDOWN SAMPLE FREQUENCY, fSMPL (kHz) 0.1 1 10 100 1000 1 10 100 10968 TA02 TA = 25°C VCC = VREF = 5V |
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