ADC121S705 Datasheet | National Semiconductor

Description The ADC121S705 is a 12-bit, 500 k SPS to 1 MSPS sampling Analog-to-Digital (A/D) converter that features a fully differential, high impedance analog input and an external reference. The reference voltage can be varied from 1.0V to VA, with a corresponding resolution between 244µV and VA divided by 4096. The output serial data is binary 2's plement and is patible with several standards, such as SPI™, QSPI™, MICROWIRE™, and many mon DSP serial interfaces. The differential input, low power consumption, and small size make the ADC121S705 ideal for direct connection to transducers in battery operated systems or remote data acquisition applications. Operating from a single 5V supply, the supply current when operating at 1 MSPS is typically 2.3 m A. The supply current drops down to 0.3 µA typically when the ADC121S705 enters power-down mode. The ADC121S705 is available in the MSOP-8 package. Operation is guaranteed over the industrial temperature range of - 40°C to +105°C and clock rates of 8 MHz to 16 MHz. .. Features - - - - - True Differential Inputs Guaranteed performance from 500 k SPS to 1 MSPS External Reference Wide Input mon-Mode Voltage Range SPI™/QSPI™/MICROWIRE™/DSP patible Serial Interface Key Specifications - - - - - - - - Conversion Rate INL DNL Offset Error Gain Error SINAD Power Consumption at VA = 5V - Active, 1 MSPS - Active, 500 k SPS - Power-Down 500 k SPS to 1 MSPS ± 0.95 LSB (max) ± 0.95 LSB (max) ± 3.0 LSB (max) ± 6.5 LSB (max) 69.5 d B (min) 11.5 m W (typ) 9.0 m W (typ) 1.5 µW (typ) Applications - - - - - - Automotive Navigation Portable Systems Medical Instruments Instrumentation and Control Systems Motor Control Direct Sensor Interface Connection Diagram Ordering Information Order Code ADC121S705CIMM ADC121S705CIMMX ADC121S705EB 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. Temperature Range - 40°C...