LTC1197L Datasheet | Linear Technology

LTC1197/LTC1197L LTC1199/LTC1199L 10-Bit, 500ksps ADCs in MSOP with Auto Shutdown Features s s s s DESCRIPTIO s s s s 8-Pin MSOP and SO Packages 10-Bit Resolution at 500ksps Single Supply: 5V or 3V Low Power at Full Speed: 25m W Typ at 5V 2.2m W Typ at 2.7V Auto Shutdown Reduces Power Linearly at Lower Sample Rates 10-Bit Upgrade to 8-Bit LTC1196/LTC1198 SPI and MICROWIRETM patible Serial I/O Low Cost The LTC ®1197/LTC1197L/LTC1199/LTC1199L are 10-bit A/D converters with sampling rates up to 500k Hz. They have 2.7V (L) and 5V versions and are offered in 8-pin MSOP and SO packages. Power dissipation is typically only 2.2m W at 2.7V (25m W 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 include 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 pact, 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 connection to signal sources in many applications, eliminating the need for gain stages. , LTC and LT are registered trademarks of Linear Technology Corporation. MICROWIRE is a trademark of National Semiconductor Corporation. APPLICATI s s s High Speed Data Acquisition Portable or pact Instrumentation Low Power or Battery-Operated Instrumentation TYPICAL APPLICATI 1µF Supply Current vs Sampling Frequency Single 2.7V Supply, 250ksps, 10-Bit Sampling ADC 2.7V SUPPLY CURRENT (µA) LTC1197L 1 2 ANALOG INPUT 0V TO 2.7V RANGE 3 4 CS +IN - IN GND VCC CLK DOUT...