September 2005
ADC108S102
8-Channel, 500 kSPS to 1 MSPS, 10-Bit A/D Converter
General Description
Features
n Eight input channels
The ADC108S102 is a low-power, eight-channel CMOS 10-
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.
n Variable power management
n Independent analog and digital supplies
n SPI/QSPI/MICROWIRE/DSP compatible
n Packaged in 16-lead TSSOP
The output serial data is straight binary and is compatible
Key Specifications
™
™
with several standards, such as SPI , QSPI , MICROW-
n Conversion Rate
n DNL (VA = VD = 5.0 V)
n INL (VA = VD = 5.0 V)
n Power Consumption
— 3V Supply
500 kSPS to 1 MSPS
™
IRE , and many common DSP serial interfaces.
0.5 LSB (max)
0.5 LSB (max)
The ADC108S102 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 2.1 mW and 9.4 mW, respectively. The power-
down feature reduces the power consumption to 0.09 µW
using a +3V supply and 0.30 µW using a +5V supply.
2.1 mW (typ)
9.4 mW (typ)
— 5V Supply
Applications
The ADC108S102 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 Automotive Navigation
n Portable Systems
n Medical Instruments
n Mobile Communications
n Instrumentation and Control Systems
Connection Diagram
20164305
Ordering Information
Order Code
ADC108S102CIMT
ADC108S102CIMTX
ADC108S102EVAL
Temperature Range
−40˚C to +105˚C
−40˚C to +105˚C
Description
16-Lead TSSOP Package
16-Lead TSSOP Package, Tape & Reel
Evaluation Board
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
DS201643
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