Overview
The ADC122S051, produced by Texas Instruments, is a low-power, two-channel CMOS 12-bit analog-to-digital converter (ADC). This device is designed for high-speed serial interface applications and is fully specified over a sample rate range of 200 ksps to 500 ksps. The ADC122S051 operates on a successive-approximation register architecture with an internal track-and-hold circuit, allowing it to accept one or two input signals at inputs IN1 and IN2. It is compatible with several serial interface standards, including SPI™, QSPI™, MICROWIRE, and many common DSP serial interfaces.
Key Specifications
| Parameter | Typical Value | Units |
|---|---|---|
| Resolution | 12 | Bits |
| Integral Non-Linearity (INL) | ±0.5 | LSB (max) |
| Differential Non-Linearity (DNL) | +0.7 / −0.4 | LSB (typ) |
| Signal-to-Noise Ratio (SNR) | 72.5 | dB (typ) |
| Power Consumption (3V Supply) | 3.0 | mW (typ) |
| Power Consumption (5V Supply) | 10 | mW (typ) |
| Power Consumption in Shutdown (3V Supply) | 0.14 | µW (typ) |
| Power Consumption in Shutdown (5V Supply) | 0.32 | µW (typ) |
| Sample Rate Range | 200 ksps to 500 ksps | |
| Supply Voltage Range | +2.7V to +5.25V | |
| Operating Temperature Range | −40°C to +85°C |
Key Features
- Two input channels with high-speed serial interface.
- Variable power management with low power consumption.
- Single power supply with a range of +2.7V to +5.25V.
- Tested per AEC-Q100 and qualified for automotive applications.
- Meets AEC-Q100-011 C2 CDM classification.
- Output serial data in straight binary format, compatible with SPI™, QSPI™, MICROWIRE, and many common DSP serial interfaces.
- Power-down feature reducing power consumption to 0.14 µW (3V) or 0.32 µW (5V).
- Packaged in an 8-lead VSSOP package.
Applications
- Portable systems.
- Remote data acquisition.
- Instrumentation and control systems.
Q & A
- What is the resolution of the ADC122S051?
The ADC122S051 has a resolution of 12 bits.
- What is the sample rate range of the ADC122S051?
The sample rate range is from 200 ksps to 500 ksps.
- What is the power consumption of the ADC122S051 at 3V and 5V supplies?
The power consumption is typically 3.0 mW at 3V and 10 mW at 5V.
- What is the power consumption in shutdown mode for the ADC122S051?
In shutdown mode, the power consumption is typically 0.14 µW at 3V and 0.32 µW at 5V.
- What is the operating temperature range of the ADC122S051?
The operating temperature range is from −40°C to +85°C.
- Is the ADC122S051 qualified for automotive applications?
Yes, it is tested per AEC-Q100 and qualified for automotive applications.
- What type of packaging does the ADC122S051 use?
The ADC122S051 is packaged in an 8-lead VSSOP package.
- What serial interface standards is the ADC122S051 compatible with?
The ADC122S051 is compatible with SPI™, QSPI™, MICROWIRE, and many common DSP serial interfaces.
- How many input channels does the ADC122S051 have?
The ADC122S051 has two input channels (IN1 and IN2).
- What is the supply voltage range for the ADC122S051?
The supply voltage range is from +2.7V to +5.25V.
