Overview
The MAX1275AETC from Analog Devices Inc./Maxim Integrated is a high-performance, low-power, 12-bit analog-to-digital converter (ADC) designed for a variety of applications requiring high-speed and precision data conversion. This device operates at a sampling rate of up to 1.8 Msps and features true-differential inputs, which enhance noise immunity, reduce distortion, and increase the dynamic range compared to single-ended inputs. The MAX1275AETC is powered by a single supply voltage ranging from +4.75V to +5.25V and requires an external reference voltage. It is particularly suited for industrial process control, motor control, and base-station applications due to its fast conversion speed, low power dissipation, and excellent AC and DC performance.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12 bits |
| Sampling Rate | Up to 1.8 Msps |
| Supply Voltage | +4.75V to +5.25V |
| Analog Input Type | Bipolar (MAX1275) |
| Interface | SPI™/QSPI™/MICROWIRE™ compatible, 3-wire serial interface |
| Power Dissipation | 45 mW (typ) |
| Shutdown Current | 1 µA (max) |
| Signal-to-Noise Ratio (SNR) | 70 dB at 525 kHz input frequency |
| Package | 12-pin TQFN |
| Operating Temperature Range | -40°C to +85°C |
Key Features
- High-speed sampling rate of up to 1.8 Msps
- True-differential inputs for improved noise immunity and dynamic range
- Low power dissipation of 45 mW (typ)
- Low shutdown current of 1 µA (max)
- High-speed, SPI-compatible, 3-wire serial interface
- No pipeline delays
- Internal true-differential track/hold (T/H)
- External reference required
- Separate power-supply input (VL) for direct interfacing to +1.8V to VDD digital logic
- Small 12-pin TQFN package
Applications
The MAX1275AETC is ideal for various applications, including:
- Industrial process control
- Motor control
- Base-station applications
- Data acquisition systems
- Portable instruments
Q & A
- What is the sampling rate of the MAX1275AETC?
The MAX1275AETC operates at a sampling rate of up to 1.8 Msps.
- What type of analog input does the MAX1275AETC have?
The MAX1275AETC has a bipolar analog input.
- What is the power dissipation of the MAX1275AETC?
The power dissipation is typically 45 mW.
- What is the shutdown current of the MAX1275AETC?
The shutdown current is a maximum of 1 µA.
- What interface does the MAX1275AETC use?
The MAX1275AETC uses a high-speed, SPI-compatible, 3-wire serial interface.
- Does the MAX1275AETC require an external reference voltage?
- What is the operating temperature range of the MAX1275AETC?
The operating temperature range is -40°C to +85°C.
- What package type is the MAX1275AETC available in?
The MAX1275AETC is available in a 12-pin TQFN package.
- What are some typical applications for the MAX1275AETC?
Typical applications include industrial process control, motor control, base-station applications, and data acquisition systems.
- How does the MAX1275AETC handle power management between conversions?
The MAX1275AETC features partial power-down and full power-down modes, reducing supply current to 1 mA (typ) and 1 µA (max), respectively.
