Overview
The MAX11261ENX+ is a 6-channel, 24-bit delta-sigma analog-to-digital converter (ADC) designed by Analog Devices Inc./Maxim Integrated. This device is renowned for its exceptional performance and low power consumption, making it ideal for precision DC measurements and applications requiring high accuracy and low noise. The MAX11261ENX+ features a programmable gain amplifier (PGA) with gain settings from 1x to 128x, enabling it to interface directly with high-impedance sources without compromising the dynamic range. It communicates through an I2C-compatible serial interface and is packaged in a small, wafer-level package (WLP).
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Resolution | 24-bit | |
| Number of Channels | 6 | |
| Sample Rate | Up to 16ksps | |
| Noise Voltage (PGA gain of 128) | 6.2nV/√Hz | |
| Analog Supply Voltage | 2.7V to 3.6V | V |
| Digital Supply Voltage | 1.7V to 2.0V (internal LDO off), 2.0V to 3.6V (internal LDO on) | V |
| Interface Type | I2C-compatible serial interface | |
| Package Type | 36-bump wafer-level package (WLP) | |
| Operating Temperature Range | -40°C to +85°C | °C |
| ESD Rating | ±2.5kV (HBM), 750V (CDM) | V |
Key Features
- Programmable gain amplifier (PGA) with gain settings from 1x to 128x, providing isolation of the signal inputs from the switched capacitor sampling network.
- 64-entry on-chip FIFO to offload the host processor, reducing system power consumption.
- I2C-compatible serial interface for communication.
- Low power dissipation with two power-down modes (SLEEP and STANDBY).
- On-demand self and system gain and offset calibration.
- User-programmable offset and gain registers.
- Hardware interrupt for input monitoring and FIFO usage.
- Autonomous scan mode to monitor input activity and interrupt the host only when the input is out of a configured range.
- Highly stable internal oscillator providing a system clock trimmed to 8.192MHz.
- Differential inputs for an external reference voltage.
Applications
The MAX11261ENX+ is suitable for various applications requiring high precision and low power consumption, such as:
- Precision DC measurements.
- Force sensing applications.
- Data acquisition systems.
- Battery-powered devices.
- Circuits with demanding power consumption and space requirements.
Q & A
- What is the resolution of the MAX11261ENX+ ADC?
The MAX11261ENX+ has a 24-bit resolution.
- How many channels does the MAX11261ENX+ support?
The device supports 6 channels.
- What is the maximum sample rate of the MAX11261ENX+?
The maximum sample rate is up to 16ksps.
- What is the noise voltage of the PGA in the MAX11261ENX+?
The noise voltage is 6.2nV/√Hz with a PGA gain of 128.
- What are the analog and digital supply voltage ranges for the MAX11261ENX+?
The analog supply voltage range is 2.7V to 3.6V, and the digital supply voltage range is 1.7V to 2.0V (internal LDO off) and 2.0V to 3.6V (internal LDO on).
- What type of interface does the MAX11261ENX+ use for communication?
The device uses an I2C-compatible serial interface.
- What is the package type of the MAX11261ENX+?
The device is packaged in a 36-bump wafer-level package (WLP).
- What is the operating temperature range of the MAX11261ENX+?
The operating temperature range is -40°C to +85°C.
- What are the ESD ratings for the MAX11261ENX+?
The ESD ratings are ±2.5kV (HBM) and 750V (CDM).
- Does the MAX11261ENX+ support on-demand calibration?
Yes, it supports on-demand self and system gain and offset calibration.
