Overview
The ADC122S021CIMMX from Texas Instruments is a low-power, two-channel CMOS 12-bit analog-to-digital converter (ADC) designed with a high-speed serial interface. This converter is based on a successive-approximation register architecture and includes an internal track-and-hold circuit. It is fully specified over a sample rate range of 50 ksps to 200 ksps, making it versatile for various applications. The ADC122S021CIMMX can be configured to accept one or two input signals at inputs IN1 and IN2, and the output serial data is straight binary, compatible with several standards such as SPI™, QSPI™, MICROWIRE, and many common DSP serial interfaces. The device operates with a single supply voltage ranging from +2.7V to +5.25V and is packaged in an 8-lead VSSSOP package, ensuring operation over the industrial temperature range of −40°C to +85°C.
Key Specifications
| Parameter | Value |
|---|---|
| Differential Non-Linearity (DNL) | +0.4 / −0.2 LSB (typ) |
| Integral Non-Linearity (INL) | ± 0.35 LSB (typ) |
| Signal-to-Noise Ratio (SNR) | 72.0 dB (typ) |
| Power Consumption (3V Supply) | 2.2 mW (typ) |
| Power Consumption (5V Supply) | 7.9 mW (typ) |
| Power-Down Consumption (3V Supply) | 0.14 µW (typ) |
| Power-Down Consumption (5V Supply) | 0.32 µW (typ) |
| Supply Voltage Range | +2.7V to +5.25V |
| Operating Temperature Range | −40°C to +85°C |
| Package Type | 8-lead VSSSOP |
Key Features
- Specified over a range of sample rates (50 ksps to 200 ksps)
- Two input channels (IN1 and IN2)
- Variable power management with low power consumption
- Single power supply with a range of +2.7V to +5.25V
- High-speed serial interface compatible with SPI™, QSPI™, MICROWIRE, and common DSP serial interfaces
- Internal track-and-hold circuit
- Power-down feature for ultra-low power consumption
Applications
The ADC122S021CIMMX is suitable for a variety of applications where low power consumption and high accuracy are required. These include:
- Industrial automation and control systems
- Medical devices and diagnostic equipment
- Aerospace and defense systems
- Automotive systems, especially those requiring low power and high reliability
- Data acquisition systems in various fields such as environmental monitoring and scientific research
Q & A
- What is the resolution of the ADC122S021CIMMX?
The ADC122S021CIMMX is a 12-bit analog-to-digital converter.
- What is the sample rate range of the ADC122S021CIMMX?
The sample rate range is from 50 ksps to 200 ksps.
- How many input channels does the ADC122S021CIMMX have?
The ADC122S021CIMMX has two input channels (IN1 and IN2).
- What is the power consumption of the ADC122S021CIMMX using a 3V supply?
The power consumption is 2.2 mW (typ) using a 3V supply.
- What is the power consumption of the ADC122S021CIMMX in power-down mode using a 3V supply?
The power consumption in power-down mode is 0.14 µW (typ) using a 3V supply.
- What is the operating temperature range of the ADC122S021CIMMX?
The operating temperature range is from −40°C to +85°C.
- What type of package does the ADC122S021CIMMX come in?
The ADC122S021CIMMX is packaged in an 8-lead VSSSOP package.
- Is the output serial data compatible with any specific standards?
Yes, the output serial data is compatible with standards such as SPI™, QSPI™, MICROWIRE, and many common DSP serial interfaces.
- What is the supply voltage range for the ADC122S021CIMMX?
The supply voltage range is from +2.7V to +5.25V.
- What architecture is the ADC122S021CIMMX based on?
The ADC122S021CIMMX is based on a successive-approximation register architecture with an internal track-and-hold circuit.
