Overview
The ADC121C027CIMK/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 precision and low power consumption.
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 | 6-Pin SOT-23-THN (DDC) |
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)
- Out-of-Range Alert Function
- Automatic Power-Down Mode while Not Converting
- Very Small 6-Pin SOT Package
- Up to three pin-selectable chip addresses (for the SOT package)
Applications
- System Monitoring
- Peak Detection
- Portable Instruments
- Medical Instruments
- Test Equipment
- Automotive (especially for the ADC121C021Q which is AEC-Q100 Grade 2 Qualified)
Q & A
- What is the resolution of the ADC121C027?
The resolution of the ADC121C027 is 12 bits with no missing codes.
- What is the typical conversion time of the ADC121C027?
The typical conversion time is 1µs.
- What is the power consumption of the ADC121C027 at 22 ksps?
The power consumption is 0.26 mW at 3V supply and 0.78 mW at 5V supply.
- What is the operating temperature range of the ADC121C027?
The operating temperature range is -40°C to +105°C.
- What types of I2C modes does the ADC121C027 support?
The ADC121C027 supports Standard (100kHz), Fast (400kHz), and High Speed (3.4MHz) I2C modes.
- Does the ADC121C027 have an out-of-range alert function?
Yes, the ADC121C027 features an out-of-range alert function that provides an interrupt when the analog input violates a programmable upper or lower limit value.
- What is the package type of the ADC121C027?
The ADC121C027 comes in a small 6-pin SOT-23-THN (DDC) package.
- Is the ADC121C027 suitable for battery-operated equipment?
Yes, due to its low power consumption and small package, it is an excellent choice for battery-operated equipment.
- Does the ADC121C027 have automatic power-down mode?
Yes, the ADC121C027 features an automatic power-down mode that reduces power consumption to less than 1µW while not converting.
- What are some common applications of the ADC121C027?
Common applications include system monitoring, peak detection, portable instruments, medical instruments, test equipment, and automotive systems.
