Overview
The MAX1276, produced by Analog Devices Inc./Maxim Integrated, is a high-speed, low-power, 12-bit analog-to-digital converter (ADC) designed for various industrial and control applications. This device operates at 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 MAX1276 is powered by a single supply voltage ranging from +4.75V to +5.25V and includes a 4.096V internal reference. It is available in a compact 12-pin TQFN package and supports an extended temperature range of -40°C to +85°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 12-bit | |
| Sampling Rate | Up to 1.8 Msps | |
| Supply Voltage | +4.75V to +5.25V | V |
| Internal Reference | 4.096V | V |
| Analog Input Type | Unipolar (MAX1276), Bipolar (MAX1278) | |
| Power Dissipation | 55mW (typ) | mW |
| Shutdown Current | 1µA (max) | µA |
| Interface | SPI™/QSPI™/MICROWIRE™ | |
| Signal-to-Noise Ratio (SNR) | 70dB at 525kHz input frequency | dB |
| Package Type | 12-pin TQFN | |
| Operating Temperature Range | -40°C to +85°C | °C |
Key Features
- High-speed sampling rate of up to 1.8 Msps
- Low power dissipation of 55mW (typ)
- True-differential inputs for improved noise immunity and distortion reduction
- Internal 4.096V reference voltage
- Partial and full power-down modes for reduced power consumption
- Separate power-supply input (VL) for direct interfacing to +1.8V to VDD digital logic
- No pipeline delays
- Compact 12-pin TQFN package
- Extended temperature range of -40°C to +85°C
Applications
- Industrial process control
- Motor control
- Base-station applications
- Data acquisition systems
- Communications equipment
- Portable instruments
Q & A
- What is the maximum sampling rate of the MAX1276?
The MAX1276 can sample at up to 1.8 million samples per second (Msps).
- What type of analog input does the MAX1276 have?
The MAX1276 has a unipolar analog input, while the MAX1278 has a bipolar analog input.
- What is the power dissipation of the MAX1276?
The typical power dissipation of the MAX1276 is 55mW.
- What is the shutdown current of the MAX1276 in full power-down mode?
The shutdown current in full power-down mode is 1µA (max).
- What interface does the MAX1276 use for data transfer?
The MAX1276 uses a standard SPI™/QSPI™/MICROWIRE™ interface.
- What is the signal-to-noise ratio (SNR) of the MAX1276 at 525kHz input frequency?
The SNR is 70dB at 525kHz input frequency.
- In what package type is the MAX1276 available?
The MAX1276 is available in a 12-pin TQFN package.
- What is the operating temperature range of the MAX1276?
The operating temperature range is -40°C to +85°C.
- Does the MAX1276 have an internal reference voltage?
Yes, the MAX1276 includes a 4.096V internal reference voltage.
- What are some typical applications of the MAX1276?
The MAX1276 is typically used in industrial process control, motor control, base-station applications, data acquisition systems, and communications equipment.
