Overview
The ADC121C021CIMKX/NOPB is a low-power, monolithic, 12-bit analog-to-digital converter (ADC) produced by Texas Instruments. This device operates from a single supply voltage ranging from +2.7V to +5.5V and features an I2C-compatible serial interface that supports standard, fast, and high-speed modes up to 3.4MHz. The ADC is based on a successive approximation register architecture with an internal track-and-hold circuit capable of handling input frequencies up to 11MHz. It is designed for use in battery-operated equipment due to its low power consumption and compact packaging options.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 12 |
| Supply Voltage Range | +2.7V to +5.5V |
| Operating Temperature Range | −40°C to +105°C |
| I2C Interface Speed Modes | Standard (100kHz), Fast (400kHz), High Speed (3.4MHz) |
| Package Types | 6-pin SOT, 8-pin VSSOP |
| Power Consumption (at +3V/+5V) | 0.26mW / 0.78mW |
| Automatic Power-Down Current | < 1µW |
| Analog Input Voltage Range | 0V to 5.5V |
| Conversion Time (Max) | 179.856 µs |
| Linearity Error (Max) | 0.0244% |
Key Features
- I2C-compatible 2-wire interface supporting standard, fast, and high-speed modes.
- Extended power supply range from +2.7V to +5.5V.
- Up to nine pin-selectable chip addresses (VSSOP package only).
- Out-of-range alert function with programmable upper and lower limit values.
- Automatic power-down mode while not converting.
- Very small 6-pin SOT and 8-pin VSSOP packages.
- AEC-Q100 Grade 2 qualified for automotive applications (ADC121C021Q).
Applications
The ADC121C021CIMKX/NOPB is suitable for a variety of applications, including battery-operated equipment, industrial control systems, medical devices, and automotive systems. Its low power consumption, compact packaging, and robust operating temperature range make it an excellent choice for applications requiring precise analog-to-digital conversion.
Q & A
- What is the resolution of the ADC121C021CIMKX/NOPB? The ADC121C021CIMKX/NOPB is a 12-bit analog-to-digital converter.
- What is the supply voltage range for this ADC? The supply voltage range is from +2.7V to +5.5V.
- What types of I2C interface speed modes does it support? It supports standard (100kHz), fast (400kHz), and high-speed (3.4MHz) modes.
- What are the available package types for this ADC? The ADC is available in 6-pin SOT and 8-pin VSSOP packages.
- What is the power consumption of the ADC at +3V and +5V supply voltages? The power consumption is 0.26mW at +3V and 0.78mW at +5V.
- Does the ADC have an automatic power-down feature? Yes, it has an automatic power-down mode that reduces power consumption to less than 1µW while not converting.
- What is the operating temperature range of the ADC? The operating temperature range is from −40°C to +105°C.
- Is the ADC121C021Q qualified for automotive applications? Yes, the ADC121C021Q is AEC-Q100 Grade 2 qualified for automotive applications.
- What is the maximum conversion time of the ADC? The maximum conversion time is 179.856 µs.
- What is the linearity error of the ADC? The maximum linearity error is 0.0244%.
