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LTC1199 Datasheet(PDF) 1 Page - Linear Technology |
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LTC1199 Datasheet(HTML) 1 Page - Linear Technology |
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1 / 28 page  1 LTC1197/LTC1197L LTC1199/LTC1199L 10-Bit, 500ksps ADCs in MSOP with Auto Shutdown Single 2.7V Supply, 250ksps, 10-Bit Sampling ADC Supply Current vs Sampling Frequency SAMPLING FREQUENCY (kHz) 0.01 100 1000 10000 100 1197/99 G03 10 1 0.1 0.1 1 10 1000 VCC = 5V fCLK = 7.2MHz VCC = 2.7V fCLK = 3.5MHz 1 2 3 4 8 7 6 5 CS +IN –IN GND VCC CLK DOUT VREF LTC1197L 1197/99 TA01 ANALOG INPUT 0V TO 2.7V RANGE 2.7V 1 µF SERIAL DATA LINK TO ASIC, PLD, MPU, DSP OR SHIFT REGISTERS The LTC ®1197/LTC1197L/LTC1199/LTC1199L are 10-bit A/D converters with sampling rates up to 500kHz. They have 2.7V (L) and 5V versions and are offered in 8-pin MSOP and SO packages. Power dissipation is typi- cally only 2.2mW at 2.7V (25mW at 5V) during full speed operation. The automatic power down reduces supply current linearly as sample rate is reduced. These 10-bit, switched-capacitor, successive approximation ADCs in- clude a sample-and-hold. The LTC1197/LTC1197L have a differential analog input with an adjustable reference pin. The LTC1199/LTC1199L offer a software-selectable 2-channel MUX. The 3-wire serial I/O, MSOP and SO-8 packages, 2.7V operation and extremely high sample rate-to-power ratio make these ADCs ideal choices for compact, low power high speed systems. These circuits can be used in ratiometric applications or with external references. The high impedance analog inputs and the ability to operate with reduced spans below 1V full scale (LTC1197/LTC1197L) allow direct connec- tion to signal sources in many applications, eliminating the need for gain stages. s 8-Pin MSOP and SO Packages s 10-Bit Resolution at 500ksps s Single Supply: 5V or 3V s Low Power at Full Speed: 25mW Typ at 5V 2.2mW Typ at 2.7V s Auto Shutdown Reduces Power Linearly at Lower Sample Rates s 10-Bit Upgrade to 8-Bit LTC1196/LTC1198 s SPI and MICROWIRE TM Compatible Serial I/O s Low Cost , LTC and LT are registered trademarks of Linear Technology Corporation. MICROWIRE is a trademark of National Semiconductor Corporation. s High Speed Data Acquisition s Portable or Compact Instrumentation s Low Power or Battery-Operated Instrumentation FEATURES DESCRIPTIO APPLICATIO S TYPICAL APPLICATIO |
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