Overview
The ADS122C04IRTER is a precision, 24-bit analog-to-digital converter (ADC) manufactured by Texas Instruments. This device is designed to reduce system cost and component count in applications measuring small sensor signals. It features a flexible input multiplexer (MUX), a low-noise programmable gain amplifier (PGA), two programmable excitation current sources, a voltage reference, an oscillator, and a precision temperature sensor. The ADS122C04IRTER is suitable for various applications requiring high precision and low noise, such as industrial process control, sensor measurement, and medical instrumentation.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 24 Bits |
| Sample Rate (Max) | Up to 2 kSPS |
| Analog Voltage (AVDD) | 2.3 V to 5.5 V |
| Digital Supply | 2.3 V to 5.5 V |
| Input Type | Differential, Single-Ended |
| Number of Input Channels | 4 (2 differential or 4 single-ended) |
| Operating Temperature Range | -40°C to +125°C |
| Package Type | 16-pin WQFN or 16-pin TSSOP |
| Interface | I2C (up to 1 Mbps) |
| Power Consumption (Typ) | 1.4 mW |
| Internal Reference | 2.048 V, 5 ppm/°C (typ) Drift |
| Internal Oscillator | 2% Accurate |
| Internal Temperature Sensor | ±0.5°C Accuracy |
Key Features
- Current Consumption as Low as 315 µA (typ)
- Wide Supply Range: 2.3 V to 5.5 V
- Programmable Gain: 1 to 128
- Programmable Data Rates: Up to 2 kSPS
- Simultaneous 50-Hz and 60-Hz Rejection at 20 SPS With Single-Cycle Settling Digital Filter
- Dual-Matched Programmable Current Sources: 10 µA to 1.5 mA
- Internal 2.048-V Reference: 5 ppm/°C (typ) Drift
- Internal 2% Accurate Oscillator
- Internal Temperature Sensor: ±0.5°C Accuracy
- I2C-Compatible Interface with Up to 1 Mbps Speed
- 16 Pin-Configurable I2C Addresses
Applications
The ADS122C04IRTER is commonly used in various applications requiring high precision and low noise, such as:
- Industrial process control
- Sensor measurement (e.g., RTDs, thermocouples, thermistors, resistive bridge sensors)
- Medical instrumentation
- Data acquisition systems
Q & A
- What is the resolution of the ADS122C04IRTER?
The ADS122C04IRTER has a resolution of 24 bits.
- What are the supported sample rates for the ADS122C04IRTER?
The device supports sample rates up to 2 kSPS.
- What is the operating temperature range of the ADS122C04IRTER?
The operating temperature range is -40°C to +125°C.
- What types of input channels does the ADS122C04IRTER support?
The device supports two differential or four single-ended input channels.
- What is the power consumption of the ADS122C04IRTER?
The typical power consumption is 1.4 mW.
- Does the ADS122C04IRTER have an internal temperature sensor?
Yes, it has an internal temperature sensor with ±0.5°C accuracy.
- What interface does the ADS122C04IRTER use for communication?
The device uses an I2C-compatible interface with speeds up to 1 Mbps.
- Can the I2C address of the ADS122C04IRTER be configured?
Yes, the device allows selection of 16 different I2C addresses.
- What are the programmable gain options for the ADS122C04IRTER?
The device offers programmable gain from 1 to 128.
- Does the ADS122C04IRTER have built-in excitation current sources?
Yes, it features dual-matched programmable current sources from 10 µA to 1.5 mA.
