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LTC1418I Datasheet(PDF) 1 Page - Linear Technology |
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LTC1418I Datasheet(HTML) 1 Page - Linear Technology |
1 / 28 page 1 LTC1418 Low Power, 14-Bit, 200ksps ADC with Serial and Parallel I/O OUTPUT CODE 4096 0 –1.0 –0.5 0 0.5 1.0 8192 1418 TA02 12288 16384 Typical INL Curve The LTC ®1418 is a low power, 200ksps, 14-bit A/D converter. Data output is selectable for 14-bit parallel or serial format. This versatile device can operate from a single 5V or ±5V supply. An onboard high performance sample-and-hold, a precision reference and internal tim- ing minimize external circuitry requirements. The low 15mW power dissipation is made even more attractive with two user selectable power shutdown modes. The LTC1418 converts 0V to 4.096V unipolar inputs from a single 5V supply and ±2.048V bipolar inputs from ±5V supplies. DC specs include ±1.25LSB INL, ±1LSB DNL and no missing codes over temperature. Outstanding AC performance includes 82dB S/(N + D) and 94dB THD at the Nyquist input frequency of 100kHz. The flexible output format allows either parallel or serial I/O. The SPI/MICROWIRE TM compatible serial I/O port can oper- ate as either master or slave and can support clock frequen- cies from DC to 10MHz. A separate convert start input and a data ready signal (BUSY) allow easy control of conversion start and data transfer. DESCRIPTION FEATURES s Single Supply 5V or ±5V Operation s Sample Rate: 200ksps s ±1.25LSB INL and ±1LSB DNL Max s Power Dissipation: 15mW (Typ) s Parallel or Serial Data Output s No Missing Codes Over Temperature s Power Shutdown: Nap and Sleep s External or Internal Reference s Differential High Impedance Analog Input s Input Range: 0V to 4.096V or ±2.048V s 81.5dB S/(N + D) and – 94dB THD at Nyquist s 28-Pin Narrow PDIP and SSOP Packages TYPICAL APPLICATION , LTC and LT are registered trademarks of Linear Technology Corporation. MICROWIRE is a trademark of National Semiconductor Corporation. s Remote Data Acquisition s Battery Operated Systems s Digital Signal Processing s Isolated Data Acquisition Systems s Audio and Telecom Processing s Medical Instrumentation APPLICATIONS S/H 14 BUFFER 8k 10 µF 10 µF REFCOMP AIN – AIN + VREF 4.096V 5V LTC1418 14-BIT ADC SELECTABLE SERIAL/ PARALLEL PORT D13 DGND 1418 TA01 VSS (0V OR – 5V) AGND SER/PAR D5 D4 (EXTCLKIN) D3 (SCLK) D2 (CLKOUT) D1 (DOUT) D0 (EXT/INT) VDD TIMING AND LOGIC 2.5V REFERENCE BUSY CS RD CONVST SHDN 1 µF Low Power, 200kHz, 14-Bit Sampling A/D Converter |
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