Overview
The MAX1279BETC+ is a high-performance, low-power, 12-bit analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This device operates at up to 1.5 million samples per second (Msps) and features true-differential inputs, which provide better noise immunity, distortion improvements, and a wider dynamic range compared to single-ended inputs. The MAX1279BETC+ is designed for applications requiring high-speed conversion, low power consumption, and excellent AC and DC performance.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Conversion Rate | Up to 1.5 Msps | |
| Resolution | 12 bits | |
| Supply Voltage | +2.7V to +3.6V | V |
| Reference Voltage | Internal 2.048V | V |
| Analog Input Type | Bipolar (MAX1279) | |
| Input Voltage Range | -VREF/2 to +VREF/2 | V |
| Full-Power Bandwidth | 20 MHz | Hz |
| Signal-to-Noise Ratio (SNR) | > 68 dB | dB |
| Spurious-Free Dynamic Range (SFDR) | -83 dB | dB |
| Intermodulation Distortion (IMD) | -78 dB | dB |
| Power Consumption (Active) | Typically 2 mA | mA |
| Power Consumption (Full Power-Down) | Maximum 1 µA | µA |
| Package Type | 12-pin TQFN | |
| Operating Temperature Range | -40°C to +85°C | °C |
Key Features
- True-differential analog inputs for improved noise immunity and distortion reduction.
- High-speed conversion rate of up to 1.5 Msps.
- Low power consumption with partial and full power-down modes.
- Internal 2.048V reference voltage.
- Standard SPI™/QSPI™/MICROWIRE™ interface for easy interfacing with microprocessors and DSPs.
- Separate power-supply input (VL) for direct interfacing to +1.8V to VDD digital logic.
Applications
- Industrial process control.
- Motor control.
- Base-station applications.
- Bill validation.
- Communications.
- Data acquisition.
- Portable instrumentation.
Q & A
- What is the maximum conversion rate of the MAX1279BETC+?
The MAX1279BETC+ operates at up to 1.5 million samples per second (Msps). - What type of analog input does the MAX1279BETC+ have?
The MAX1279BETC+ has a bipolar analog input. - What is the supply voltage range for the MAX1279BETC+?
The supply voltage range is +2.7V to +3.6V. - Does the MAX1279BETC+ have an internal reference voltage?
Yes, it has an internal 2.048V reference voltage. - What are the power-down modes available for the MAX1279BETC+?
The device features partial and full power-down modes, reducing supply current to 2 mA (typ) and 1 µA (max), respectively. - What is the operating temperature range of the MAX1279BETC+?
The operating temperature range is -40°C to +85°C. - What type of interface does the MAX1279BETC+ use for data transfer?
The device uses a standard SPI™/QSPI™/MICROWIRE™ interface. - What is the package type of the MAX1279BETC+?
The device is available in a 12-pin TQFN package. - What are some common applications for the MAX1279BETC+?
Common applications include industrial process control, motor control, base-station applications, and more. - How does the true-differential input architecture benefit the MAX1279BETC+?
The true-differential input architecture provides better noise immunity, distortion improvements, and a wider dynamic range compared to single-ended inputs.
