Features: Variable power management
Packaged in 6-lead SOT-23 (ADC081S101 also
available in a 6-Lead LLP package)
Power supply used as reference
Single +2.7V to +5.25V supply operation
SPITM/QSPITM/MICROWIRETM/DSP compatibleApplicationAutomotive Navigation
FA/ATM Equipment
Portable Systems
Medical Instruments
Mobile Communications
Instrumentation and Control SystemsSpecificationsSupply Voltage V -0.3V to +6.5VDD
Voltage on Any Analog Pin to GND -0.3V to V +0.3VDD
Voltage on Any Digital Pin to GND -0.3V to 6.5V
Input Current at Any Pin (Note 5) ±10 mA
ESD Susceptibility
Human Body Model 3500V
Machine Model 200V
Soldering Temperature, Infrared,
10 seconds 215?C
Junction Temperature +150?C
Storage Temperature -65?C to +150?C
DescriptionTheADC121S101,ADC101S101, andADC081S101 are low power, monolithic CMOS 12-, 10- and 8-bit analog-to-digital converters that operate at 1 MSPS. Each device is based on a successive approximation register architecture with inter- nal track-and-hold. The serial interface is compatible with several standards, such as SPI(TM), QSPI(TM), MICROWIRE(TM), and many common DSP serial interfaces.
The ADC121S101/101S101/081S101 uses the supply volt- age as a reference.This enables the devices to operate with a full-scale input range of 0 to V . The conversion rate is DD determined from the serial clock (SCLK) speed. These con- verters offer a shutdown mode, which can be used to trade
throughput for power consumption. The ADC121S101/101S101/081S101 are operated with a single supply that canrangefrom+2.7Vto+5.25V.Normalpowerconsumption during continuous conversion, using a +3V or +5V supply, is 2 mW or 10 mW, respectively. The power down feature, which is enabled by a chip select (CS) pin, reduces the power consumption to under 5 W using a +5V supply. All three converters are available in a 6-lead SOT-23 package, which provides an extremely small footprint for applications where space is a critical consideration. TheADC081S101 is
also available in a 6-lead LLP package. These products are designed for operation over the industrial temperature range of -40?C to +85?C, with some parameters specified to +125?C for the ADC121S101.
ADC121S101 Data Sheet
