Overview
The AD7124-8BBCPZ-RL7, produced by Analog Devices Inc., is a highly integrated, 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 AD7124-8 family and is housed in a 32-lead LFCSP package. It offers a high degree of signal chain integration, making it suitable for various industrial, medical, and automotive applications. The AD7124-8 W grade is AEC-Q100 qualified, ensuring its reliability in automotive environments.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Channels | 8 differential or 15 single-ended/pseudo differential |
| Resolution | 24-bit |
| Power Modes | 3 integrated power modes |
| Analog Power Supply | 2.7 V to 3.6 V (single supply) or 1.8 V (dual supply) |
| Digital Power Supply | 1.65 V to 3.6 V |
| Temperature Range | -40°C to +125°C |
| Package Type | 32-Lead LFCSP (5mm x 5mm x 0.95mm) |
| RMS Noise (Low Power Mode) | 24 nV rms at 1.17 SPS, gain = 128 |
| Output Data Rates | Variable, up to 25 SPS (single cycle settling) |
| Internal Reference Accuracy | 2.5 V ± 0.2% at 25°C |
| Internal Reference Drift | 2 ppm/°C (25°C to 125°C), 15 ppm/°C (-40°C to 125°C) |
Key Features
- Low noise and low power consumption with three integrated power modes, allowing for tailored current consumption, output data rates, and rms noise.
- On-chip low gain stage for direct interfacing of small amplitude signals.
- 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 a bias voltage generator.
- Low-side power switch for powering down bridge sensors between conversions to minimize power consumption.
- Option to operate with either an internal or external clock.
- Integrated channel sequencer allowing simultaneous enabling of multiple channels and sequential conversion on each enabled channel.
- Per channel configuration with up to eight different setups for gain, filter type, output data rate, buffering, and reference source.
Applications
The AD7124-8BBCPZ-RL7 is suitable for a variety of high precision measurement applications, including:
- Industrial process control and automation.
- Medical devices requiring high accuracy and low noise.
- Automotive systems, particularly those requiring AEC-Q100 qualification.
- Test and measurement equipment.
- Smart sensors and IoT devices.
Q & A
- What is the resolution of the AD7124-8BBCPZ-RL7 ADC?
The AD7124-8BBCPZ-RL7 has a 24-bit resolution. - How many channels does the AD7124-8BBCPZ-RL7 support?
The device supports 8 differential or 15 single-ended/pseudo differential channels. - What are the power supply options for the AD7124-8BBCPZ-RL7?
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, and the digital supply ranges from 1.65 V to 3.6 V. - What is the temperature range for the AD7124-8BBCPZ-RL7?
The device is specified for a temperature range of -40°C to +125°C. - Does the AD7124-8BBCPZ-RL7 support simultaneous 50 Hz and 60 Hz rejection?
Yes, it 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 AD7124-8BBCPZ-RL7 support?
The device supports an internal band gap reference and an external differential reference, which can be internally buffered. - Can the AD7124-8BBCPZ-RL7 be configured per channel?
Yes, the device allows per channel configuration with up to eight different setups for gain, filter type, output data rate, buffering, and reference source. - What is the purpose of the low-side power switch in the AD7124-8BBCPZ-RL7?
The low-side power switch enables the user to power down bridge sensors between conversions, ensuring minimal power consumption. - Is the AD7124-8BBCPZ-RL7 AEC-Q100 qualified?
Yes, the W grade of the AD7124-8 is AEC-Q100 qualified for automotive applications. - What is the package type of the AD7124-8BBCPZ-RL7?
The device is housed in a 32-lead LFCSP package (5mm x 5mm x 0.95mm).
