Overview
The AD7124-8BCPZ is a highly integrated, low power, and low noise analog-to-digital converter (ADC) produced by Analog Devices Inc. This 24-bit Sigma-Delta ADC is designed for high precision measurement applications and features a comprehensive set of integrated functions. The device supports up to 8 differential inputs or 15 single-ended or pseudo-differential inputs, making it versatile for various measurement needs. It is particularly suited for applications requiring high accuracy and minimal power consumption.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 24 |
| Number of Channels | 8 differential, 15 single-ended or pseudo-differential |
| Sampling Rate | Up to 19.2 kSPS |
| Input Type | Differential, Single-Ended, Pseudo-Differential |
| Data Interface | SPI, DSP |
| Architecture | Sigma-Delta |
| Reference Type | Internal, External |
| Analog Supply Voltage | 2.7 V to 3.6 V or dual 1.8 V |
| Digital Supply Voltage | 1.65 V to 3.6 V |
| Temperature Range | -40°C to +125°C |
| Package | 32-Lead LFCSP (5mm x 5mm x 0.75mm) |
Key Features
- Low noise and low power consumption, with three integrated power modes to tailor current consumption, output data rates, and rms noise.
- On-chip low gain stage for interfacing small amplitude signals directly to the ADC.
- Integrated channel sequencer allowing simultaneous enabling of multiple channels and sequential conversions.
- Extensive diagnostic functionality including cyclic redundancy check (CRC), signal chain checks, and serial interface checks.
- Programmable low drift excitation current sources, burnout currents, and a bias voltage generator.
- Option to operate with either an internal or external clock.
- Support for up to 16 channels, including diagnostics such as power supply and reference checks.
Applications
The AD7124-8BCPZ is suitable for a variety of high precision measurement applications, including industrial process control, medical devices, and automotive systems. The W grade of the AD7124-8 is AEC-Q100 qualified, making it particularly suitable for automotive applications. Additionally, the device can be used in test and measurement equipment, data acquisition systems, and any application requiring low noise and high accuracy ADC performance.
Q & A
- What is the resolution of the AD7124-8BCPZ ADC?
The AD7124-8BCPZ has a resolution of 24 bits. - How many input channels does the AD7124-8BCPZ support?
The device supports up to 8 differential inputs or 15 single-ended or pseudo-differential inputs. - What are the power supply options for the AD7124-8BCPZ?
The device operates 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 has a range of 1.65 V to 3.6 V. - What is the temperature range of the AD7124-8BCPZ?
The device is specified for a temperature range of -40°C to +125°C. - Does the AD7124-8BCPZ support external clock operation?
Yes, the device allows the user to operate with either an internal or external clock. - What diagnostic features are integrated into the AD7124-8BCPZ?
The device includes cyclic redundancy check (CRC), signal chain checks, and serial interface checks. - Is the AD7124-8BCPZ suitable for automotive applications?
Yes, the W grade of the AD7124-8 is AEC-Q100 qualified for automotive applications. - How does the AD7124-8BCPZ manage power consumption?
The device has three integrated power modes to tailor current consumption and output data rates, and it includes features like low-side power switches to power down bridge sensors between conversions. - What package type is the AD7124-8BCPZ available in?
The device is housed in a 32-lead LFCSP package. - Can the AD7124-8BCPZ be configured on a channel-by-channel basis?
Yes, the device allows per channel configuration, including gain, filter type, output data rate, buffering, and reference source.
