ADC104S021 Datasheet | National Semiconductor

April 2005 .. ADC124S021 4 Channel, 200 k SPS, 12-Bit A/D Converter ADC124S021 4 Channel, 200 k SPS, 12-Bit A/D Converter General Description The ADC124S021 is a low-power, four-channel 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 ADC124S021 is fully specified over a sample rate range 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 four input signals at inputs IN1 through IN4. 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 ADC124S021 operates with a single supply that can range from +2.7V to +5.25V. Normal power consumption using a +3V or +5V supply is 2.2 m W and 7.9 m W, respectively. The power-down feature reduces the power consumption to just 0.14 µW using a +3V supply, or 0.32 µW using a +5V supply. The ADC124S021 is packaged in a 10-lead MSOP package. Operation over the industrial temperature range of - 40˚C to +85˚C is guaranteed. Features n n n n Specified over a range of sample rates. Four input channels Variable power management Single power supply with 2.7V - 5.25V range Key Specifications n n n n DNL INL SNR Power Consumption - 3V Supply - 5V Supply +0.4 / - 0.2 LSB (typ) ± 0.35 LSB (typ) 72.0 d B (typ) 2.2 m W (typ) 7.9 m W (typ) Applications n Portable Systems n Remote Data Aquisitions n Instrumentation and Control Systems Pin-patible Alternatives by Resolution and Speed All devices are fully pin and function patible. Resolution 50 to 200 k SPS 12-bit 10-bit 8-bit ADC124S021 ADC104S021 ADC084S021 Specified for Sample Rate Range of: 200 to 500 k SPS ADC124S051 ADC104S051 ADC084S051 500 k SPS to 1 MSPS ADC124S101 ADC104S101 ADC084S101 Connection Diagram TRI-STATE ®...