Overview
The ADC121C021CIMMX/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 is based on a successive approximation register architecture with an internal track-and-hold circuit. It is designed to handle input frequencies up to 11MHz and features an I2C-compatible serial interface that supports standard, fast, and high-speed modes up to 3.4MHz. The ADC is available in small packages, including 6-pin SOT and 8-pin VSSOP, making it suitable for battery-operated equipment due to its low power consumption and compact size.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 12 Bits (No Missing Codes) |
| Conversion Time | 1µs (Typ) |
| INL & DNL | ±1 LSB (Max) (Up to 22ksps) |
| Throughput Rate | 188.9 ksps (Max) |
| Power Consumption (at 22 ksps) | 0.26 mW (Typ) at 3V, 0.78 mW (Typ) at 5V |
| Operating Temperature Range | -40°C to +105°C |
| Package Options | 6-pin SOT, 8-pin VSSOP |
Key Features
- I2C-Compatible 2-Wire Interface supporting 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 only)
- Out-of-Range Alert Function
- Automatic Power-Down Mode while not converting
- Very small 6-pin SOT and 8-pin VSSOP packages
- ADC121C021Q is an Automotive Grade Product that is AEC-Q100 Grade 2 Qualified
Applications
The ADC121C021CIMMX/NOPB is particularly suited for use in battery-operated equipment due to its low power consumption and small package size. It is ideal for applications requiring high precision and low power, such as industrial automation, medical devices, and automotive systems. Additionally, its ability to operate over an industrial temperature range makes it suitable for a wide range of environments.
Q & A
- What is the resolution of the ADC121C021CIMMX/NOPB?
The resolution is 12 bits with no missing codes. - What are the supported I2C speed modes?
The device supports standard (100kHz), fast (400kHz), and high speed (3.4MHz) I2C modes. - What is the power supply range for this ADC?
The power supply range is from +2.7V to +5.5V. - What is the typical conversion time?
The typical conversion time is 1µs. - Does the ADC have an out-of-range alert function?
Yes, it has an out-of-range alert function that provides an interrupt when the analog input violates a programmable upper or lower limit value. - How much power does the ADC consume at 22 ksps?
The power consumption is 0.26 mW (Typ) at 3V and 0.78 mW (Typ) at 5V. - What are the available package options?
The ADC is available in 6-pin SOT and 8-pin VSSOP packages. - Is the ADC121C021Q automotive grade?
Yes, the ADC121C021Q is an automotive grade product that is AEC-Q100 Grade 2 Qualified. - What is the operating temperature range?
The operating temperature range is from -40°C to +105°C. - Does the ADC have an automatic power-down mode?
Yes, it has an automatic power-down mode that reduces power consumption to less than 1µW while not converting.
