The AD7276 /AD7277/AD7278is a 12-bit, high speed, low power, successive approximation analog-to-digital converters (ADCs). The parts operate from a single 2.35 V to 3.6 V power supply and feature throughput rates of up to 3 MSPS. The parts contain a low noise, wide bandwidth track-and-hold amplifier that can handle input frequencies in excess of 55 MHz.The conversion process and data acquisition are controlled usingCSand the serial clock, allowing the devices to interface with microprocessors or DSPs. The input signal is sampled on the falling edge ofCS, and the conversion is also initiated at this point. There are no pipeline delays associated with the part.The AD7276 / AD7277 / AD7278 uses advanced design techniques to achieve very low power dissipation at high throughput rates.The reference for the part is taken internally from VDD. This allows the widest dynamic input range to the ADC; therefore, the analog input range for the part is 0 to VDD. The conversion rate is determined by the SCLKPRODUCT HIGHLIGHTS3 MSPS ADCs in a 6-lead TSOT packageAD7276 / AD7277 / AD7278 andAD7476A/AD7477A/AD7478Apin-compatibleHigh throughput with low power consumptionFlexible power/serial clock speed management. This allows maximum power efficiency at low throughput ratesReference derived from the power supplyNo pipeline delay. The parts feature a standard successive approximation ADC with accurate control of the sampling instant via aCSinput and once-off conversion control.