Overview
The MAX1274BCTC+ is a high-performance, low-power, 12-bit analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This device operates at a sampling rate of up to 1.8 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 MAX1274BCTC+ is designed for applications requiring high-speed conversion, low power consumption, and excellent AC and DC performance.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Sampling Rate | Up to 1.8 Msps | - |
| Number of Bits | 12 | - |
| Supply Voltage | +4.75V to +5.25V | V |
| Power Dissipation | 45 mW (typ) | mW |
| Shutdown Current | 1 µA (max) | µA |
| Analog Input Type | True-Differential | - |
| Input Voltage Range (MAX1274) | 0 to VREF | V |
| Input Voltage Range (MAX1275) | -VREF/2 to +VREF/2 | V |
| Reference Input Voltage Range | 1.0 V to VDD + 50mV | V |
| Operating Temperature Range | -40°C to +85°C | °C |
| Package Type | 12-pin TQFN | - |
Key Features
- High-speed, SPI-compatible, 3-wire serial interface
- True-differential inputs for improved noise immunity and distortion reduction
- External reference input
- No pipeline delays
- Partial and full power-down modes for low power consumption
- Separate power-supply input (VL) for direct interfacing to +1.8V to VDD digital logic
- Excellent AC performance: 70dB S/(N + D) at 525kHz input frequency
- Small 12-pin TQFN package
Applications
- Industrial process control
- Motor control
- Base-station applications
- Bill validation
- Communications
- Data acquisition
- Portable instrumentation
Q & A
- What is the sampling rate of the MAX1274BCTC+ ADC?
The MAX1274BCTC+ operates at a sampling rate of up to 1.8 Msps.
- What type of analog input does the MAX1274BCTC+ have?
The MAX1274 has a unipolar analog input, while the MAX1275 has a bipolar analog input.
- What is the power dissipation of the MAX1274BCTC+?
The typical power dissipation is 45 mW.
- What are the power-down modes available in the MAX1274BCTC+?
The device features partial and full power-down modes, reducing supply current to 1 mA (typ) and 1 µA (max), respectively.
- What is the operating temperature range of the MAX1274BCTC+?
The operating temperature range is -40°C to +85°C.
- What type of interface does the MAX1274BCTC+ use?
The device uses a high-speed, SPI-compatible, 3-wire serial interface.
- Does the MAX1274BCTC+ require an external reference?
- What is the package type of the MAX1274BCTC+?
The device is packaged in a 12-pin TQFN package.
- What are some of the key applications of the MAX1274BCTC+?
The device is suitable for industrial process control, motor control, base-station applications, and more.
- How does the true-differential input improve performance?
The true-differential input offers better noise immunity, distortion improvements, and a wider dynamic range compared to single-ended inputs.
