AD7927

Data Sheet AD7927 8-Channel, 200 kSPS, 12-Bit ADC with Sequencer in 20-Lead TSSOP FEATURES ► Fast throughput rate: 200 kSPS ► Specified for AVDD of 2.7 V to 5.25 V ► Low power ► 3.6 mW maximum at 200 kSPS with 3 V supply ► 7.5 mW maximum at 200 kSPS with 5 V supply ► 8 (single-ended) inputs with sequencer ► Wide input bandwidth ► 70 dB minimum SINAD at 50 kHz input frequency ► Flexible power/serial clock speed management ► No pipeline delays ► High speed serial interface SPI-, QSPI™-, MICROWIRE™-, DSPcompatible ► Shutdown mode: 0.5 μA maximum ► 20-lead TSSOP ► Qualified for automotive applications GENERAL DESCRIPTION The AD7927 is a 12-bit, high speed, low power, 8-channel, successive approximation ADC. The part operates from a single 2.7 V to 5.25 V power supply and features throughput rates up to 200 kSPS. The part contains a low noise, wide bandwidth track-and-hold amplifier that can handle input frequencies in excess of 8 MHz. The conversion process and data acquisition are controlled using CS and the serial clock signal, allowing the device to easily interface with microprocessors or DSPs. The input signal is sampled on the falling edge of CS and the conversion is also initiated at this point. There are no pipeline delays associated with the part. The AD7927 uses advanced design techniques to achieve very low power dissipation at maximum throughput rates. At maximum throughput rates, the AD7927 consumes 1.2 mA maximum with 3 V supplies; with 5 V supplies, the current co...