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LTC1418CG

製品説明
仕様・特性

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

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