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VA
CS
GND
SDATA
VIN
SCLK
ADC121S101
ADC121S101
www.ti.com
SNAS304E – JANUARY 2006 – REVISED OCTOBER 2012
ADC121S101/ADC121S101–Q1 Single Channel, 0.5 to 1 Msps, 12-Bit A/D Converter
Check for Samples: ADC121S101
1
FEATURES
APPLICATIONS
2
•
Specified Over a Range of Sample Rates
•
Portable Systems
•
6-lead WSON and SOT-23 Packages
•
Remote Data Acquisition
•
Variable Power Management
•
Instrumentation and Control Systems
•
Single Power Supply with 2.7V - 5.25V Range
•
Automotive
•
SPI™/QSPI™/MICROWIRE/DSP Compatible
KEY SPECIFICATIONS
•
AEC-Q100 Grade 1 Qualified
•
DNL: +0.5 /
−0.3 LSB (typ)
•
INL: ±0.40 LSB (typ)
•
Power Consumption
–
3V Supply: 2.0 mW(typ)
–
5V Supply: 10 mW (typ)
DESCRIPTION
The ADC121S101 is a low-power, single channel CMOS 12-bit analog-to-digital converter with a high-speed
serial interface. Unlike the conventional practice of specifying performance at a single sample rate only, the
ADC121S101 is fully specified over a sample rate range of 500 ksps to 1 Msps. The converter is based upon a
successive-approximation register architecture with an internal track-and-hold circuit.
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 ADC121S101 operates with a single supply that can range from +2.7V to +5.25V. Normal power
consumption using a +3V or +5V supply is 2.0 mW and 10 mW, respectively. The power-down feature reduces
the power consumption to as low as 2.6 µW using a +5V supply.
The ADC121S101 is packaged in 6-lead WSON and SOT-23 packages. Operation over the temperature range of
−40°C to +125 °C is specified.
Pin-Compatible Alternatives by Resolution and Speed(1)
Resolution
Specified for Sample Rate Range of:
50 to 200 ksps
200 to 500 ksps
500 ksps to 1 Msps
12-bit
ADC121S021
ADC121S051
ADC121S101
10-bit
ADC101S021
ADC101S051
ADC101S101
8-bit
ADC081S021
ADC081S051
ADC081S101
(1)
All devices are fully pin and function compatible.
Connection Diagram
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2006–2012, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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