Overview
The MAX11284ETL+ is a dual 24-bit delta-sigma analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This device is designed to achieve excellent signal-to-noise ratio (SNR) while maintaining low power consumption, making it ideal for precision DC and AC measurements. The MAX11284 operates at sample rates up to 4 ksamples per second (ksps) and features integrated programmable gain amplifiers (PGAs) with selectable gain values from 1x to 128x. The device is available in a compact 40-pin TQFN package, enhancing its suitability for various applications requiring high precision and low power consumption.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Resolution | 24 bits | |
| Number of Channels | 2 | |
| Sampling Rate | Up to 4 ksps | |
| Architecture | Sigma-Delta | |
| Analog Supply Voltage | 2.7V to 3.6V | V |
| Digital Supply Voltage | 2.0V to 3.6V | V |
| Integral Nonlinearity | ±4 ppm | |
| Total Harmonic Distortion (THD) | -120 dB | |
| Operating Temperature | -40°C to 85°C | °C |
| Package Type | 40-pin TQFN |
Key Features
- High SNR and low power consumption of 3.6 mW per ADC.
- Integrated PGAs with gain values ranging from 1x to 128x, operating in low-noise or low-power modes.
- Optional buffers to isolate signal inputs from the switched capacitor sampling network, suitable for high-impedance sources.
- SPI-compatible serial interface for communication.
- Support for single 2.7V to 3.6V analog supply or split ±1.8V analog supplies, allowing sampling below ground.
- Integrated offset and gain self-calibration and system gain and offset calibration registers.
- Small 40-pin TQFN package for compact design.
Applications
The MAX11284ETL+ is particularly suited for applications requiring high precision and low power consumption, such as:
- Seismic measurements and monitoring.
- Precision DC and AC measurements.
- Data acquisition systems.
- Industrial automation and control systems.
- Medical devices and diagnostic equipment.
Q & A
- What is the resolution of the MAX11284ETL+ ADC?
The MAX11284ETL+ has a resolution of 24 bits.
- What is the maximum sampling rate of the MAX11284ETL+?
The maximum sampling rate is up to 4 ksps.
- What type of architecture does the MAX11284ETL+ use?
The MAX11284ETL+ uses a sigma-delta architecture.
- What are the operating voltage ranges for the MAX11284ETL+?
The analog supply voltage range is 2.7V to 3.6V, and the digital supply voltage range is 2.0V to 3.6V.
- What is the integral nonlinearity of the MAX11284ETL+?
The integral nonlinearity is guaranteed to ±4 ppm.
- What is the total harmonic distortion (THD) of the MAX11284ETL+?
The THD is -120 dB.
- What package type is the MAX11284ETL+ available in?
The MAX11284ETL+ is available in a 40-pin TQFN package.
- Does the MAX11284ETL+ support high-impedance sources?
- What communication interface does the MAX11284ETL+ use?
The MAX11284ETL+ communicates through an SPI-compatible serial interface.
- What are some typical applications of the MAX11284ETL+?
Typical applications include seismic measurements, precision DC and AC measurements, data acquisition systems, industrial automation, and medical devices.
