ADC121S101 Datasheet, PDF (1/23 Pages) National Semiconductor (TI) – 1MSPS, 12-/10-/8-Bit A/D Converters in SOT-23

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
FEATURES
1
•2 Specified Over a Range of Sample Rates
• 6-lead WSON and SOT-23 Packages
• Variable Power Management
• Single Power Supply with 2.7V - 5.25V Range
• SPI™/QSPI™/MICROWIRE/DSP Compatible
• AEC-Q100 Grade 1 Qualified
APPLICATIONS
• Portable Systems
• Remote Data Acquisition
• Instrumentation and Control Systems
• Automotive
KEY SPECIFICATIONS
• 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.
Resolution
12-bit
10-bit
8-bit
Pin-Compatible Alternatives by Resolution and Speed⁽¹⁾
Specified for Sample Rate Range of:
50 to 200 ksps
200 to 500 ksps
ADC121S021
ADC121S051
ADC101S021
ADC101S051
ADC081S021
ADC081S051
500 ksps to 1 Msps
ADC121S101
ADC101S101
ADC081S101
(1) All devices are fully pin and function compatible.
Connection Diagram
V_A 1
6 CS
GND 2 ^ADC121S101 5 SDATA
V_{IN 3}
4 SCLK
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.
All trademarks are the property of their respective owners.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2006–2012, Texas Instruments Incorporated