Overview
The ADC121S021 device, produced by Texas Instruments, is a low-power, single-channel CMOS 12-bit analog-to-digital converter (ADC) featuring a high-speed serial interface. This converter is distinguished by its specification over a wide sample rate range of 50 ksps to 200 ksps, unlike conventional ADCs that are often specified at a single sample rate. The ADC121S021 employs a successive-approximation register architecture with an internal track-and-hold circuit, ensuring high accuracy and reliability.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12 bits |
| Sample Rate | 50 ksps to 200 ksps |
| Supply Voltage | 2.7 V to 5.25 V |
| Power Consumption (3.6 V) | 1.5 mW |
| Power Consumption (5.25 V) | 7.9 mW |
| Power-Down Consumption (5.25 V) | 2.6 µW |
| Interface Compatibility | SPI™, QSPI™, MICROWIRE, and common DSP serial interfaces |
| Output Data Format | Straight binary |
| Package Types | 6-pin WSON and SOT-23 |
| Operating Temperature Range | -40°C to 85°C |
Key Features
- Low power consumption with a power-down feature to reduce power to as low as 2.6 µW.
- High-speed serial interface compatible with SPI™, QSPI™, MICROWIRE, and many common DSP serial interfaces.
- Successive-approximation register architecture with an internal track-and-hold circuit.
- Output serial data in straight binary format.
- Operates over a wide supply voltage range of 2.7 V to 5.25 V.
- Available in 6-pin WSON and SOT-23 packages.
- Ensured operation over the industrial temperature range of -40°C to 85°C.
Applications
The ADC121S021 is suitable for a variety of applications that require low power consumption and high precision analog-to-digital conversion. These include:
- Industrial control systems.
- Medical devices.
- Aerospace and defense systems.
- Automotive systems.
- Portable and battery-powered devices.
Q & A
- What is the resolution of the ADC121S021?
The ADC121S021 has a resolution of 12 bits.
- What is the sample rate range of the ADC121S021?
The sample rate range is from 50 ksps to 200 ksps.
- What is the supply voltage range for the ADC121S021?
The supply voltage range is from 2.7 V to 5.25 V.
- How much power does the ADC121S021 consume at 3.6 V and 5.25 V?
At 3.6 V, it consumes 1.5 mW, and at 5.25 V, it consumes 7.9 mW.
- What is the power consumption in power-down mode?
In power-down mode, the power consumption is as low as 2.6 µW using a 5.25-V supply.
- What serial interfaces is the ADC121S021 compatible with?
The ADC121S021 is compatible with SPI™, QSPI™, MICROWIRE, and many common DSP serial interfaces.
- What is the output data format of the ADC121S021?
The output serial data is in straight binary format.
- In what packages is the ADC121S021 available?
The ADC121S021 is available in 6-pin WSON and SOT-23 packages.
- What is the operating temperature range of the ADC121S021?
The operating temperature range is from -40°C to 85°C.
- What architecture does the ADC121S021 use?
The ADC121S021 uses a successive-approximation register architecture with an internal track-and-hold circuit.
