Overview
The AD7124-4BRUZ-RL, produced by Analog Devices Inc., is a low power, low noise, 24-bit Sigma-Delta analog-to-digital converter (ADC) designed for high precision measurement applications. This device is part of the AD7124-4 series and is housed in a 24-lead TSSOP package. It offers a highly integrated analog front end, featuring a low noise ADC, programmable gain amplifier (PGA), and internal reference, making it suitable for a wide range of precision measurement tasks.
Key Specifications
| Specification | Value |
|---|---|
| Number of Channels | 4 differential or 7 single-ended/pseudo differential |
| Number of Bits | 24-bit |
| Sampling Rate | Up to 19.2 ksps |
| Power Modes | Low, Mid, Full power modes |
| Current Consumption | Low power: 255 µA, Mid power: 355 µA, Full power: 930 µA (typical) |
| RMS Noise | Low power: 24 nV rms, Mid power: 20 nV rms, Full power: 23 nV rms (gain = 128) |
| Supply Voltage | Single analog supply: 2.7 V to 3.6 V, Dual 1.8 V power supply; Digital supply: 1.65 V to 3.6 V |
| Temperature Range | -40°C to +105°C |
| Package | 24-Lead TSSOP |
| Converter Type | Sigma-Delta ADC |
Key Features
- Low noise, low power 24-bit Sigma-Delta ADC with PGA and reference.
- Three integrated power modes allowing for tailored current consumption, output data rates, and rms noise.
- Simultaneous 50 Hz and 60 Hz rejection with rejection in excess of 80 dB at lower output data rates.
- Precision, low noise, low drift internal band gap reference and external differential reference option.
- Programmable low drift excitation current sources, burnout currents, and bias voltage generator.
- Low-side power switch for minimal power consumption by powering down bridge sensors between conversions.
- Option to operate with either an internal or external clock.
- Integrated channel sequencer allowing simultaneous channel enabling and sequential conversion.
- Per channel configuration with eight setups each consisting of gain, filter type, output data rate, buffering, and reference source.
- Extensive diagnostic functionality including cyclic redundancy check (CRC), signal chain checks, and serial interface checks.
Applications
The AD7124-4BRUZ-RL is suitable for various high precision measurement applications, including:
- Industrial automation and control systems.
- Medical devices requiring precise analog-to-digital conversion.
- Aerospace and defense applications (AD7124-4-EP supports AQEC standard).
- Test and measurement equipment.
- Smart energy and metering systems.
Q & A
- What is the primary function of the AD7124-4BRUZ-RL?
The AD7124-4BRUZ-RL is a low power, low noise, 24-bit Sigma-Delta analog-to-digital converter (ADC) designed for high precision measurement applications.
- How many channels does the AD7124-4BRUZ-RL support?
The device supports 4 differential or 7 single-ended/pseudo differential channels.
- What are the power modes available on the AD7124-4BRUZ-RL?
The device has three integrated power modes: Low, Mid, and Full power modes.
- What is the typical current consumption of the AD7124-4BRUZ-RL in each power mode?
The typical current consumption is 255 µA in Low power mode, 355 µA in Mid power mode, and 930 µA in Full power mode.
- What is the temperature range of the AD7124-4BRUZ-RL?
The device operates within a temperature range of -40°C to +105°C.
- Can the AD7124-4BRUZ-RL reject 50 Hz and 60 Hz noise?
Yes, the device can achieve simultaneous 50 Hz and 60 Hz rejection with rejection in excess of 80 dB at lower output data rates.
- What types of references does the AD7124-4BRUZ-RL support?
The device supports a precision, low noise, low drift internal band gap reference and an external differential reference option.
- Does the AD7124-4BRUZ-RL have diagnostic features?
Yes, the device includes extensive diagnostic functionality such as cyclic redundancy check (CRC), signal chain checks, and serial interface checks.
- Can the AD7124-4BRUZ-RL be configured on a per channel basis?
Yes, the device allows per channel configuration with eight setups each consisting of gain, filter type, output data rate, buffering, and reference source.
- What is the package type of the AD7124-4BRUZ-RL?
The device is housed in a 24-Lead TSSOP package.
