8-Channel, 500 kSPS to 1 MSPS, 12-Bit A/D Converter
The ADC128S102 is a low-power, eight-channel CMOS 12-
bit analog-to-digital converter specified for conversion
throughput rates of 500 kSPS to 1 MSPS. 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™, MICROW-
IRE™, and many common DSP serial interfaces.
The ADC128S102 may be operated with independent ana-
log and digital supplies. The analog supply (VA) can range
from +2.7V to +5.25V, and the digital supply (VD) can range
from +2.7V to VA. Normal power consumption using a +3V or
+5V supply is 2.3 mW and 10.7 mW, respectively. The
power-down feature reduces the power consumption to 0.06
µW using a +3V supply and 0.25 µW using a +5V supply.
The ADC128S102 is packaged in a 16-lead TSSOP pack-
age. Operation over the extended industrial temperature
range of −40˚C to +105˚C is guaranteed.
n Eight input channels
n Variable power management
n Independent analog and digital supplies
n SPI/QSPI/MICROWIRE/DSP compatible
n Packaged in 16-lead TSSOP
n Conversion Rate
n DNL (VA = VD = 5.0 V)
n INL (VA = VD = 5.0 V)
n Power Consumption
— 3V Supply
— 5V Supply
500 kSPS to 1 MSPS
+1.5 / −0.9 LSB (max)
±1.2 LSB (max)
2.3 mW (typ)
10.7 mW (typ)
n Automotive Navigation
n Portable Systems
n Medical Instruments
n Mobile Communications
n Instrumentation and Control Systems
−40˚C to +105˚C
−40˚C to +105˚C
16-Lead TSSOP Package
16-Lead TSSOP Package, Tape & Reel
TRI-STATE® is a trademark of National Semiconductor Corporation.
MICROWIRE™ is a trademark of National Semiconductor Corporation.
QSPI™ and SPI™ are trademarks of Motorola, Inc.
© 2005 National Semiconductor Corporation DS201361