Overview
The ADC121C021CIMM/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 various applications requiring high accuracy and low power consumption, making it suitable for battery-operated equipment and industrial environments with an operating temperature range of -40°C to +105°C.
Key Specifications
| Parameter | 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) | 3V Supply: 0.26 mW (Typ), 5V Supply: 0.78 mW (Typ) |
| Operating Temperature Range | -40°C to +105°C |
| Package | 8-pin VSSOP (DGK) |
| Number of Analog Inputs | 1 |
| Number of Channels | 1 |
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
- System Monitoring
- Peak Detection
- Portable Instruments
- Medical Instruments
- Test Equipment
- Automotive
Q & A
- What is the resolution of the ADC121C021?
The ADC121C021 has a resolution of 12 bits with no missing codes.
- What is the conversion time of the ADC121C021?
The conversion time is typically 1µs.
- What are the power consumption levels for the ADC121C021?
The power consumption is 0.26 mW at 3V supply and 0.78 mW at 5V supply at 22 ksps.
- What is the operating temperature range of the ADC121C021?
The operating temperature range is -40°C to +105°C.
- What types of packages are available for the ADC121C021?
The ADC121C021 is available in 6-pin SOT and 8-pin VSSOP packages.
- Does the ADC121C021 support multiple I2C speed modes?
Yes, it supports standard (100kHz), fast (400kHz), and high-speed (3.4MHz) I2C modes.
- What is the out-of-range alert function in the ADC121C021?
The out-of-range alert function provides an interrupt when the analog input violates a programmable upper or lower limit value.
- Is the ADC121C021 suitable for automotive applications?
Yes, the ADC121C021Q is an Automotive Grade Product that is AEC-Q100 Grade 2 Qualified.
- How many pin-selectable chip addresses are available on the VSSOP package?
Up to nine pin-selectable chip addresses are available on the VSSOP package.
- What is the automatic power-down mode in the ADC121C021?
The automatic power-down mode reduces power consumption to less than 1µW while the device is not converting.
