Overview
The AD7124-4TRUZ-EP, produced by Analog Devices Inc., is a highly integrated, low power, and low noise analog-to-digital converter (ADC) designed for high precision measurement applications. This 4-channel, 24-bit Sigma-Delta ADC features a programmable gain amplifier (PGA) and a precision internal reference, making it ideal for a wide range of industrial and medical applications. The device offers multiple power modes, allowing users to tailor current consumption, output data rates, and noise performance to their specific needs. It also includes extensive diagnostic capabilities, such as cyclic redundancy check (CRC), signal chain checks, and serial interface checks, enhancing the reliability and robustness of the system.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Channels | 4 |
| Resolution | 24-bit |
| Converter Type | Sigma-Delta ADC |
| Analog Input Type | Differential or Single-Ended/Pseudo Differential |
| Analog Supply Voltage | 2.7 V to 3.6 V (single supply) or 1.8 V (dual supply) |
| Digital Supply Voltage | 1.65 V to 3.6 V |
| Operating Temperature Range | −40°C to +105°C |
| Package Type | 32-lead LFCSP or 24-lead TSSOP |
| Output Data Rate | Up to 25 SPS (single cycle settling) |
| Noise Performance | RMS noise can be tailored with power mode selection |
Key Features
- Low noise and low power consumption, making it suitable for battery-powered devices and high precision measurements.
- Programmable gain amplifier (PGA) and precision internal band gap reference, with the option to use an external differential reference.
- Multiple power modes to adjust current consumption, output data rates, and noise performance.
- Extensive diagnostic capabilities including CRC, signal chain checks, and serial interface checks.
- Integrated low drift excitation current sources, burnout currents, and a bias voltage generator.
- Simultaneous 50 Hz and 60 Hz rejection with rejection in excess of 80 dB at lower output data rates.
Applications
The AD7124-4TRUZ-EP is designed for various high precision measurement applications, including industrial process control, medical devices, and defense and aerospace systems. Its robust diagnostic features and compliance with AQEC standards make it particularly suitable for critical applications requiring high reliability and safety, such as those adhering to IEC 61508 standards.
Q & A
- What is the resolution of the AD7124-4TRUZ-EP ADC? The AD7124-4TRUZ-EP has a 24-bit resolution.
- How many channels does the AD7124-4TRUZ-EP support? The device supports 4 differential or 7 single-ended/pseudo differential channels.
- What are the power supply options for the AD7124-4TRUZ-EP? The device can operate with a single analog power supply from 2.7 V to 3.6 V or a dual 1.8 V power supply. The digital supply voltage ranges from 1.65 V to 3.6 V.
- What are the key diagnostic features of the AD7124-4TRUZ-EP? The device includes cyclic redundancy check (CRC), signal chain checks, and serial interface checks.
- What is the operating temperature range of the AD7124-4TRUZ-EP? The device operates within a temperature range of −40°C to +105°C.
- What types of packages are available for the AD7124-4TRUZ-EP? The device is available in 32-lead LFCSP and 24-lead TSSOP packages.
- Can the AD7124-4TRUZ-EP reject 50 Hz and 60 Hz noise simultaneously? Yes, the device can achieve simultaneous 50 Hz and 60 Hz rejection when operating at an output data rate of 25 SPS.
- What are some of the applications for the AD7124-4TRUZ-EP? The device is suitable for industrial process control, medical devices, and defense and aerospace systems.
- Does the AD7124-4TRUZ-EP support external references? Yes, the device accepts an external differential reference, which can be internally buffered.
- What is the significance of the AQEC standard compliance for the AD7124-4TRUZ-EP? Compliance with AQEC standards makes the device suitable for defense and aerospace applications, ensuring high reliability and safety.
