Overview
The MAX11253ATJ+ from Analog Devices Inc./Maxim Integrated is a high-performance, 6-channel, 16-bit delta-sigma analog-to-digital converter (ADC). This device is designed to achieve exceptional performance while consuming very low power, making it ideal for precision DC measurements. The MAX11253 operates with sample rates up to 64ksps and communicates via a SPI serial interface. It is available in a compact 5mm x 5mm TQFN package, enhancing its suitability for space-constrained applications.
Key Specifications
| Parameter | Specification |
|---|---|
| Resolution | 16-bit |
| Number of Channels | 6 differential channels |
| Sample Rate | Up to 64ksps |
| Analog Supply Voltage | Single: 2.7V to 3.6V, Split: ±1.8V |
| Digital Supply Voltage | 1.7V to 2.0V or 2.0V to 3.6V |
| Programmable Gain Amplifier (PGA) | Gain settings from 1x to 128x |
| Noise Performance | 6.2nV/√Hz |
| Operating Temperature | -40°C to 125°C |
| Package Type | 5mm x 5mm TQFN |
Key Features
- Highly stable internal oscillator providing an 8.192MHz system clock, with support for external clock mode.
- Integrated low-noise programmable gain amplifier (PGA) with gain settings from 1x to 128x, enabling direct interface with high-impedance sources.
- Differential inputs for external reference voltage (REFP and REFN) with a common-mode voltage range between 0.75V and V_AVDD - 0.75V.
- Option to bypass the PGA and directly connect analog inputs to the modulator, reducing power consumption.
- Fourth-order delta-sigma modulator that is unconditionally stable and monitors overrange conditions.
- Variable decimation-rate SINC filter with overflow monitoring reported in the status register.
Applications
- Precision DC measurements in industrial and medical devices.
- Automotive applications, including touch-screen sensing and other precision measurement tasks.
- High-accuracy data acquisition systems.
- Industrial control and automation systems requiring low power and high precision.
Q & A
- What is the resolution of the MAX11253ATJ+ ADC?
The MAX11253ATJ+ has a resolution of 16 bits.
- How many channels does the MAX11253ATJ+ support?
The MAX11253ATJ+ supports 6 differential channels.
- What are the sample rates supported by the MAX11253ATJ+?
The MAX11253ATJ+ supports sample rates up to 64ksps.
- What are the analog and digital supply voltage ranges for the MAX11253ATJ+?
The analog supply voltage range is 2.7V to 3.6V (or split ±1.8V), and the digital supply voltage range is 1.7V to 2.0V or 2.0V to 3.6V.
- What is the noise performance of the MAX11253ATJ+ PGA?
The PGA has a noise performance of 6.2nV/√Hz.
- Can the MAX11253ATJ+ operate with an external clock?
- How does the PGA in the MAX11253ATJ+ enhance its functionality?
The PGA provides gain settings from 1x to 128x, enabling the device to interface directly with high-impedance sources without compromising dynamic range.
- What is the operating temperature range of the MAX11253ATJ+?
The operating temperature range is -40°C to 125°C.
- In what package is the MAX11253ATJ+ available?
The MAX11253ATJ+ is available in a 5mm x 5mm TQFN package.
- Can the PGA be bypassed in the MAX11253ATJ+?
