ADC128S022 Datasheet | National Semiconductor

Description The ADC128S022 is a low-power, eight-channel CMOS 12bit analog-to-digital converter specified for conversion throughput rates of 50 k SPS to 200 k SPS. The converter is based on a successive-approximation register architecture with an internal track-and-hold circuit. It can be configured to accept up to eight input signals at inputs IN0 through IN7. The output serial data is straight binary and is patible with several standards, such as SPI™, QSPI, MICROWIRE, and many mon DSP serial interfaces. The ADC128S022 may be operated with independent analog and digital supplies. The analog supply (VA) can range from +2.7V to +5.25V, and the digital supply (VD) can range from +2.7V to VA. Normal power consumption using a +3V or +5V supply is 1.2 m W and 7.5 m W, respectively. The powerdown feature reduces the power consumption to 0.06 µW using a +3V supply and 0.25 µW using a +5V supply. The ADC128S022 is packaged in a 16-lead TSSOP package. Operation over the extended industrial temperature range of - 40˚C to +105˚C is guaranteed. Features n n n n n Eight input channels Variable power management Independent analog and digital supplies SPI™/QSPI™/MICROWIRE™/DSP patible Packaged in 16-lead TSSOP Key Specifications n n n n Conversion Rate DNL (VA = VD = 5.0 V) INL (VA = VD = 5.0 V) Power Consumption - 3V Supply - 5V Supply 50 k SPS to 200 k SPS +1.0 / - 0.7 LSB (max) ± 1.0 LSB (max) 1.2 m W (typ) 7.5 m W (typ) Applications n n n n n Automotive Navigation Portable Systems Medical Instruments Mobile munications Instrumentation and Control Systems Connection Diagram Ordering Information Order Code ADC128S022CIMT ADC128S022CIMTX ADC128S022EVAL Temperature Range - 40˚C to +105˚C - 40˚C to +105˚C Description 16-Lead TSSOP Package 16-Lead TSSOP Package, Tape & Reel Evaluation Board TRI-STATE ® is a trademark of National Semiconductor Corporation. MICROWIRE™ is a trademark of National Semiconductor Corporation. QSPI™ and SPI™ are trademarks of Motorola, Inc. © 2005...