1 Features
• Eight Input Channels
• Variable Power Management
• Independent Analog and Digital Supplies successive•
SPI™/QSPI™/MICROWIRE/DSP Compatible
• Packaged in 16-lead TSSOP
• Conversion Rate: 50 ksps to 200ksps
• DNL (V A = VD = 5 V): +1 / −0.7 LSB (Maximum)
• INL (VA = VD = 5 V): ±1 LSB (Maximum)
• Power Consumption
– 3V Supply: 1.2 mW (Typical)
– 5V Supply: 7.5 mW (Typical)

2 Applications
• Automotive Navigation
• Portable Systems
• Medical Instruments
• Mobile Communications
• Instrumentation and Control Systems

3 Description
The ADC128S022 device is a low-power, eight-
channel CMOS 12-bit analog-to-digital converter specified for conversion throughput rates of 50 ksps
to 200 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 IN0 through IN7.
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 ADC128S022 may be operated with independent
analog and digital supplies. The analog supply (VA)
can range from 2.7 V to 5.25 V, and the digital supply
(VD) can range from 2.7 V to VA. Normal power consumption using a 3-V or 5-V supply is 1.2 mW
and 7.5 mW, respectively. The power-down feature
reduces the power consumption to 0.06 μW using a
3-V supply and 0.25 μW using a 5-V supply.
The ADC128S022 is packaged in a 16-lead TSSOP
package. Operation over the extended industrial temperature range of −40°C to +105°C is ensured.