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LTC1098LACS8 Datasheet(PDF) 1 Page - Linear Technology |
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LTC1098LACS8 Datasheet(HTML) 1 Page - Linear Technology |
1 / 8 page 1 LTC1096L/LTC1098L Low Voltage, Micropower Sampling 8-Bit Serial I/O A/D Converters December 1995 Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. Final Electrical Specifications DESCRIPTIO S FEATURE s Specified at 2.65V Minimum Supply s Maximum Supply Current: 80 µA s Auto Shutdown to 1nA s 8-Pin SO Package s On-Chip Sample-and-Hold s Conversion Time: 32 µs s Sample Rates: 16.5ksps s I/O Compatible with SPI, MICROWIRE TM, etc. The LTC ®1096L/LTC1098L are 3V micropower, 8-bit suc- cessive approximation sampling A/D converters. They typically draw only 40 µA of supply current when convert- ing and automatically power down to a typical supply current of 1nA between conversions. They are packaged in 8-pin SO packages and operate on a 3V supply. These 8- bit, switched capacitor, successive approximation ADCs include a sample-and-hold. The LTC1096L has a single differential analog input. The LTC1098L offers a software selectable 2-channel multiplexed input. 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. The 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 (to 1V full scale) allow direct connection to sensors and transducers in many applications, eliminating the need for gain stages. s Battery-Operated Systems s Remote Data Acquisition s Isolated Data Acquisition s Battery Monitoring s Temperature Measurement S APPLICATI , LTC and LT are registered trademarks of Linear Technology Corporation. MICROWIRE is a registered trademark of National Semiconductor Corporation. APPLICATI TYPICAL SAMPLE FREQUENCY (kHz) 0.1 1 10 100 1000 1 10 100 1096/8 TA02 Supply Current vs Sample Rate 10 µW, SO-8 Package, 8-Bit A/D Converter Samples at 200Hz and Runs Off a 3V Battery 3V 1 µF ANALOG INPUT VCC CLK DOUT VREF 8 7 6 5 1 2 3 4 LTC1096L MPU SERIAL DATA LINK (MICROWIRE AND SPI COMPATIBLE) SERIAL DATA LINK 0V TO 3V RANGE 1096/8 TA01 CS/ SHDN +IN –IN GND |
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