Overview
The MAX11270EUG+T, produced by Analog Devices Inc./Maxim Integrated, is a high-performance 24-bit delta-sigma analog-to-digital converter (ADC) designed for precision measurements. It stands out for its exceptional signal-to-noise ratio (SNR) of 130dB and ultra-low power consumption of 10mW. This ADC supports sample rates up to 64ksps, making it suitable for both DC and AC measurements. The device features an integrated programmable gain amplifier (PGA) with gain settings from 1x to 128x and optional signal buffers to ensure compatibility with high-impedance sources.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 24 bits |
| Sample Rate | Up to 64ksps |
| SNR | 130dB at 1.9sps, 112dB at 1000sps |
| Integral Nonlinearity (INL) | 1ppm (typ), 4ppm (max) |
| Total Harmonic Distortion (THD) | -122dB |
| Analog Supply Voltage | 2.7V to 3.6V (single supply) or ±1.8V (split supplies) |
| Digital Supply Voltage | 2.0V to 3.6V |
| Power Consumption | 10mW |
| PGA Gain Settings | 1x, 2x, 4x, 8x, 16x, 32x, 64x, 128x |
| Input Type | Differential |
| Data Interface | SPI-compatible serial interface |
| Package | 24-pin TSSOP |
Key Features
- High resolution for instrumentation applications requiring a wide dynamic range.
- Longer battery life for portable applications with low operating current (2.4mA) and sleep current (1μA).
- High accuracy for DC measurements with integral nonlinearity guaranteed to 4ppm maximum.
- Flexible high-performance filter architecture with programmable SINC filter.
- Integrated PGA with gain settings between 1x to 128x and optional signal buffers.
- Single or split analog supplies providing input voltage range flexibility.
- Robust 24-pin TSSOP packaging.
- Three general-purpose I/Os for system integration.
Applications
- Scientific Instrumentation
- High-Precision Portable Sensors
- Medical Equipment
- Automated Test Equipment (ATE)
Q & A
- What is the resolution of the MAX11270EUG+T ADC?
The MAX11270EUG+T has a resolution of 24 bits. - What are the sample rates supported by the MAX11270EUG+T?
The MAX11270EUG+T supports sample rates up to 64ksps. - What is the signal-to-noise ratio (SNR) of the MAX11270EUG+T?
The SNR is 130dB at 1.9sps and 112dB at 1000sps. - What are the gain settings of the integrated PGA?
The PGA has gain settings of 1x, 2x, 4x, 8x, 16x, 32x, 64x, and 128x. - What is the power consumption of the MAX11270EUG+T?
The power consumption is 10mW. - What are the analog and digital supply voltage ranges for the MAX11270EUG+T?
The analog supply voltage range is 2.7V to 3.6V (single supply) or ±1.8V (split supplies), and the digital supply voltage range is 2.0V to 3.6V. - What type of data interface does the MAX11270EUG+T use?
The MAX11270EUG+T uses an SPI-compatible serial interface. - What is the package type of the MAX11270EUG+T?
The package type is a 24-pin TSSOP. - What are some typical applications of the MAX11270EUG+T?
Typical applications include scientific instrumentation, high-precision portable sensors, medical equipment, and automated test equipment (ATE). - Does the MAX11270EUG+T support high-impedance sources?
Yes, the MAX11270EUG+T includes optional signal buffers to provide isolation of the signal inputs from the switched capacitor sampling network, making it compatible with high-impedance sources.
