10-Bit, 189kSPS, 1-Ch SAR ADC with I2C and Alert Pin
Product details
Parameters
Package | Pins | Size
Features
- 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 10 bits; no missing codes
- Conversion Time 1µs (typ)
- INL & DNL ±0.5 LSB (max)
- Throughput Rate 188.9 kSPS (max)
- Power Consumption (at 22kSPS)
- 3V Supply 0.26 mW (typ)
- 5V Supply 0.78 mW (typ)
Description
The ADC101C021 is a low-power, monolithic, 10-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 ADC101C021 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 ADC101C021 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 ADC101C027 comes in a small SOT-6 package with an address selection input. The ADC101C027 provides three pin-selectable addresses while the VSSOP-8 version of the ADC101C021 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 guaranteed. Their low power consumption and small packages make this family of ADCs an excellent choice for use in battery operated equipment.
The ADC101C021 and ADC101C027 are part of a family of pin-compatible ADCs that also provide 12 and 8 bit resolution. For 12-bit ADCs see the ADC121C021 and ADC121C027. For 8-bit ADCs see the ADC081C021 and ADC081C027.
Technical documentation
Type | Title | Date | |
---|---|---|---|
* | Datasheet | ADC101C021/027 I2C-Compatible, 10-Bit ADC with Alert Function datasheet (Rev. D) | Feb. 19, 2013 |
E-book | Best of Baker's Best: Precision Data Converters -- SAR ADCs | May 21, 2015 | |
User guide | ADC1X1C02X Evaluation Board User Guide | Jan. 25, 2012 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Design tools & simulation
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
Features
- Expedites circuit design with analog-to-digital converters (ADCs) and digital-to-analog converters (DACs)
- Noise calculations
- Common unit translation
- Solves common amplifier circuit design problems
- Gain selections using standard resistors
- Filter configurations
- Total noise for common amplifier configurations
- (...)
Reference designs
Design files
-
download TIDA-00811 BOM Files.zip (233KB) -
download TIDA-00811 Assembly Files.zip (345KB) -
download TIDA-00811 Layer Plots.zip (1991KB) -
download TIDA-00811 Altium.zip (4061KB) -
download TIDA-00811 Gerber.zip (1433KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
SOT-23-THIN (DDC) | 6 | View options |
VSSOP (DGK) | 8 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
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Support & training
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