Overview
The MAX11254ATJ/V+T, produced by Analog Devices Inc./Maxim Integrated, is a high-performance 24-bit, 6-channel delta-sigma analog-to-digital converter (ADC). This device is designed to achieve exceptional performance while consuming very low power, making it ideal for a variety of applications requiring precision and low power consumption.
The MAX11254 operates with sample rates up to 64ksps, enabling precise DC measurements. It communicates via a SPI serial interface and is packaged in a compact 5mm x 5mm 32-TQFN exposed pad package. The device supports both single and split analog supplies, allowing for input voltage range flexibility and the ability to sample analog inputs below ground.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Number of Bits | Resolution of the ADC | 24 |
| Number of Inputs | Number of analog input channels | 6 |
| Input Type | Type of analog input | Differential |
| Sampling Rate | Maximum sampling rate per second | 64ksps |
| Data Interface | Serial communication interface | SPI |
| Architecture | Type of ADC architecture | Sigma-Delta |
| Reference Type | Type of reference voltage | External |
| Analog Supply Voltage | Range of analog supply voltage | ±1.8V, 2.7V to 3.6V |
| Digital Supply Voltage | Range of digital supply voltage | 1.7V to 3.6V |
| Operating Temperature | Range of operating temperature | -40°C to +125°C |
| Package Type | Type and size of the package | 32-TQFN (5mm x 5mm) Exposed Pad |
| PGA Noise | Noise performance of the PGA | 6.2nV/√Hz |
| PGA Gain Settings | Available gain settings for the PGA | 1x, 2x, 4x, 8x, 16x, 32x, 64x, 128x |
Key Features
- High Resolution and Low Noise: Achieves 133dB SNR at 50sps and 124dB SNR at 1000sps, making it suitable for industrial applications requiring a wide dynamic range.
- Low Power Consumption: Operates with a low current of 2.2mA in operating mode and 1μA in sleep mode, extending battery life in portable applications.
- Flexible Power Supply: Supports single (2.7V to 3.6V) or split (±1.8V) analog supplies, allowing for input voltage range flexibility.
- Programmable Gain Amplifier (PGA): Features a low-noise PGA with gain settings from 1x to 128x, enabling direct interface with high-impedance sources without compromising dynamic range.
- User-Programmable Offset and Gain Registers: Allows for on-demand device and system gain and offset calibration.
- Robust Performance: Operates over a wide temperature range of -40°C to +125°C.
- Compact Package: Available in a small 5mm x 5mm TQFN package.
Applications
- Analog I/O for Programmable Logic Controllers: Suitable for industrial control systems requiring precise analog measurements.
- Weigh Scales: Ideal for applications needing high accuracy and low noise in weight measurement.
- Pressure Sensors: Used in pressure measurement applications that demand high resolution and low noise.
- Battery-Powered Instrumentation: Optimized for portable instruments where low power consumption is critical.
- Automotive: Applicable in various automotive systems requiring precise and robust analog-to-digital conversion.
Q & A
- What is the resolution of the MAX11254 ADC?
The MAX11254 is a 24-bit ADC.
- How many analog input channels does the MAX11254 have?
The MAX11254 has 6 analog input channels.
- What is the maximum sampling rate of the MAX11254?
The maximum sampling rate is 64ksps.
- What type of serial interface does the MAX11254 use?
The MAX11254 communicates via a SPI serial interface.
- What is the noise performance of the PGA in the MAX11254?
The PGA has a noise performance of 6.2nV/√Hz.
- What are the available gain settings for the PGA in the MAX11254?
The PGA gain settings range from 1x to 128x.
- What is the operating temperature range of the MAX11254?
The operating temperature range is -40°C to +125°C.
- What type of package is the MAX11254 available in?
The MAX11254 is available in a 32-TQFN (5mm x 5mm) exposed pad package.
- Can the MAX11254 operate with both single and split analog supplies?
Yes, it supports both single (2.7V to 3.6V) and split (±1.8V) analog supplies.
- What is the typical operating current of the MAX11254?
The typical operating current is 2.2mA, and the sleep current is 1μA.
