The ADC78H90 is a low-power, eight-channel CMOS 12-bit analog-to-digital converter with a
conversion throughput of 500 kSPS. 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 eight
input signals at inputs AIN1 through AIN8.
The output serial data is straight binary, and is compatible with several standards, such
as SPI™, QSPI™, MICROWIRE™, and many common DSP serial interfaces.
The ADC78H90 may be operated with independent analog and digital supplies. The analog
supply (AVDD) can range from +2.7V to +5.25V, and the digital supply
(DVDD) can range from +2.7V to AVDD. Normal power
consumption using a +3V or +5V supply is 1.5 mW and 8.3 mW, respectively. The power-down feature
reduces the power consumption to just 0.3 µW using a +3V supply, or 0.5 µW using a +5V
The ADC78H90 is packaged in a 16-lead TSSOP package. Operation over the industrial
temperature range of −40°C to +85°C is ensured.
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