ADC081C027
- I2C-Compatible 2-Wire Interface Which Supports Standard (100kHz), Fast (400kHz), and High Speed (3.4MHz) Modes
- Extended Power Supply Range (+2.7V to +5.5V)
- Up to Nine Pin-Selectable Chip Addresses (VSSOP-8 only)
- Out-of-Range Alert Function
- Automatic Power-Down Mode While Not Converting
- Very Small SOT-6 and VSSOP-8 Packages
- ±8kV HBM ESD Protection (SDA, SCL)
Key Specifications
- Resolution: 8 bits; No Missing Codes
- Conversion Time 1 µs (Typ)
- INL & DNL: ±0.2 LSB (Max)
- Throughput Rate: 188.9 ksps (Max)
- Power Consumption (at 22ksps):
- 3V Supply: 0.26 mW (Typ)
- 5V Supply: 0.78 mW (Typ)
All trademarks are the property of their respective owners. I2C is a trademark of Texas Instruments.
The ADC081C021 is a low-power, monolithic, 8-bit, analog-to-digital converter (ADC) that operates from a +2.7 to 5.5V supply. The converter is based on a successive approximation register architecture with an internal track-and-hold circuit that can handle input frequencies up to 11MHz. The ADC081C021 operates from a single supply which also serves as the reference. The device features an I2C-compatible serial interface that operates in all three speed modes, including high speed mode (3.4MHz).
The ADC's Alert feature provides an interrupt that is activated when the analog input violates a programmable upper or lower limit value. The device features an automatic conversion mode, which frees up the controller and I2C interface. In this mode, the ADC continuously monitors the analog input for an "out-of-range" condition and provides an interrupt if the measured voltage goes out-of-range.
The ADC081C021 comes in two packages: a small SOT-6 package with an alert output, and an VSSOP-8 package with an alert output and two address selection inputs. The ADC081C027 comes in a small SOT-6 package with an address selection input. The ADC081C027 provides three pin-selectable addresses while the VSSOP-8 version of the ADC081C021 provides nine pin-selectable addresses. Pin-compatible alternatives to the SOT-6 options are available with additional address options.
Normal power consumption using a +3V or +5V supply is 0.26mW or 0.78mW, respectively. The automatic power-down feature reduces the power consumption to less than 1µW while not converting. Operation over the industrial temperature range of −40°C to +105°C is ensured. Their low power consumption and small packages make this family of ADCs an excellent choice for use in battery operated equipment.
The ADC081C021 and ADC081C027 are part of a family of pin-compatible ADCs that also provide 10- and 12-bit resolution. For 10-bit ADCs see the ADC101C021 and ADC101C027. For 12-bit ADCs see the ADC121C021 and ADC121C027.
Similar products you might be interested in
Drop-in replacement with upgraded functionality to the compared device
Technical documentation
Type | Title | Date | ||
---|---|---|---|---|
* | Data sheet | ADC081C021/C027 I2C-Compatible, 8-Bit ADC with Alert Function datasheet (Rev. C) | 25 Mar 2013 | |
Application note | A Basic Guide to I2C | PDF | HTML | 08 Nov 2022 | |
E-book | Best of Baker's Best: Precision Data Converters -- SAR ADCs | 21 May 2015 | ||
EVM User's guide | ADC1X1C02X Evaluation Board User Guide | 25 Jan 2012 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
ADC081C021SW-LINUX — Linux Driver for ADC081C021
Linux Mainline Status
Available in Linux Main line: Yes
Available through git.ti.com: N/A
Supported Devices:
- adc081c021
- adc081c027
Linux Source (...)
ANALOG-ENGINEER-CALC — Analog engineer's calculator
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
TINA-TI — SPICE-based analog simulation program
Package | Pins | CAD symbols, footprints & 3D models |
---|---|---|
SOT-23-THN (DDC) | 6 | Ultra Librarian |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
- Fab location
- Assembly location
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
TI E2E™ forums with technical support from TI engineers
Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.
If you have questions about quality, packaging or ordering TI products, see TI support.