Overview
The MAX11259AWX+T, produced by Analog Devices Inc./Maxim Integrated, is a 6-channel, 24-bit delta-sigma Analog-to-Digital Converter (ADC) that stands out for its exceptional performance and low power consumption. This ADC supports sample rates up to 16 kilosamples per second (ksps), making it suitable for precision DC measurements. It communicates via an I²C-compatible serial interface and is available in a compact 3mm x 3mm Wafer-Level Package (WLP).
The device features a built-in programmable gain amplifier (PGA) with gain settings ranging from 1x to 128x, which enables it to interface directly with high-impedance sources without compromising the dynamic range. The MAX11259 operates on a single 2.7V to 3.6V analog supply or split ±1.8V analog supplies, and its digital supply range is 1.7V to 2.0V or 2.0V to 3.6V, allowing compatibility with various logic levels.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Channels | 6 |
| Resolution | 24 bits |
| Sample Rate | Up to 16 ksps |
| Noise (PGA) | 6.2 nV/√Hz |
| Gain Settings (PGA) | 1x to 128x |
| Analog Supply Voltage | 2.7V to 3.6V or ±1.8V |
| Digital Supply Voltage | 1.7V to 2.0V or 2.0V to 3.6V |
| Interface | I²C-compatible serial interface |
| Package Type | 3mm x 3mm WLP |
Key Features
- Low Power Consumption: The MAX11259 is designed to achieve exceptional performance while consuming very low power.
- Programmable Gain Amplifier (PGA): Offers gain settings from 1x to 128x, enabling direct interface with high-impedance sources.
- High Precision: Supports sample rates up to 16 ksps for precision DC measurements.
- Flexible Supply Voltages: Operates on a single 2.7V to 3.6V analog supply or split ±1.8V analog supplies, and digital supply range of 1.7V to 2.0V or 2.0V to 3.6V.
- Built-in Sequencer: Supports scanning of selected analog channels, programmable conversion delay, and math operations to automate sensor monitoring.
- Internal Oscillator: A highly stable internal oscillator provides the system clock, with an option for an external clock mode.
- External Reference Inputs: Differential inputs for an external reference voltage.
Applications
- Precision Measurement Systems: Ideal for applications requiring high accuracy and low noise, such as precision DC measurements.
- Industrial Automation: Suitable for sensor monitoring and automation in industrial environments.
- Medical Devices: Can be used in medical devices that require high precision and low power consumption.
- Aerospace and Defense: Applicable in various aerospace and defense systems where precision and reliability are critical.
- Automotive Systems: Useful in automotive applications that demand high accuracy and robust performance.
Q & A
- What is the resolution of the MAX11259 ADC?
The MAX11259 is a 24-bit delta-sigma ADC.
- What are the sample rates supported by the MAX11259?
The MAX11259 supports sample rates up to 16 ksps.
- What is the noise performance of the PGA in the MAX11259?
The PGA has a noise performance of 6.2 nV/√Hz.
- What are the gain settings available for the PGA in the MAX11259?
The PGA offers gain settings from 1x to 128x.
- What is the operating voltage range for the MAX11259?
The MAX11259 operates on a single 2.7V to 3.6V analog supply or split ±1.8V analog supplies, and its digital supply range is 1.7V to 2.0V or 2.0V to 3.6V.
- What type of interface does the MAX11259 use?
The MAX11259 communicates via an I²C-compatible serial interface.
- What is the package type of the MAX11259?
The MAX11259 is available in a 3mm x 3mm WLP package.
- Does the MAX11259 support external reference inputs?
Yes, the MAX11259 provides differential inputs for an external reference voltage.
- What is the purpose of the built-in sequencer in the MAX11259?
The built-in sequencer supports scanning of selected analog channels, programmable conversion delay, and math operations to automate sensor monitoring.
- Can the MAX11259 be powered by an external clock?
Yes, the MAX11259 supports an external clock mode in addition to its internal oscillator.
