ADC121S021 Datasheet | Texas Instruments

Features - 1 Specified Over a Range of Sample Rates - Variable Power Management - Single Power Supply With 2.7-V to 5.25-V Range - patible With the SPI, QSPI, MICROWIRE, and DSP - Key Specifications: - DNL: 0.45 and - 0.25 LSB (Typical) - INL: 0.45 and - 0.4 LSB (Typical) - SNR: 72.3 d B (Typical) - Power Consumption - 3.6-V Supply: 1.5 m W (Typical) - 5.25-V Supply: 7.9 m W (Typical) 2 Applications - Portable Systems - Remote Data Acquisition - Instrumentation and Control Systems 3 Description The ADC121S021 device is a low-power, singlechannel CMOS 12-bit analog-to-digital converter with a high-speed serial interface. Unlike the conventional practice of specifying performance at a single sample rate only, the ADC121S021 is fully specified over a sample rate range of 50 ksps to 200 ksps. The converter is based upon a successive-approximation register architecture with an internal track-and-hold circuit. 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 ADC121S021 operates with a single supply that can range from 2.7 V to 5.25 V. Normal power consumption using a 3.6-V or 5.25-V supply is 1.5 m W and 7.9 m W, respectively. The power-down feature reduces the power consumption to as low as 2.6 µW using a 5.25-V supply. The ADC121S021 is packaged in 6-pin WSON and SOT-23 packages. Operation over the industrial temperature range of - 40°C to 85°C is ensured. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) SOT-23 (6) WSON (6) 2.90 mm × 1.60 mm 2.50 mm × 2.20 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. Key Graphic SDATA SAR...