Overview
The MAX1142BEAP+ is a 14-bit analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This device operates at a sampling rate of 200ksps and is designed for high-performance applications requiring precise analog-to-digital conversion. The MAX1142 features a single +5V supply operation, making it versatile for various industrial and medical applications. It includes an internal track/hold circuit, a clock generator, and an internal bandgap reference, ensuring reliable and accurate conversions.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Resolution | 14 bits | |
| Sampling Rate | 200ksps (bipolar), 150ksps (unipolar) | |
| Input Range | 0 to +12V (unipolar), ±12V (bipolar) | V |
| Supply Voltage | +5V ±5% | V |
| Power Consumption | 7.5mA (unipolar mode), 2.5µA (shutdown mode) | mA/µA |
| SINAD (Signal-to-Noise and Distortion Ratio) | ≥ 81dB | dB |
| Input Impedance | 3.4kΩ to 10kΩ | kΩ |
| Input Capacitance | 32 pF | pF |
| Aperture Delay | 10 ns | ns |
| Aperture Jitter | 50 ps | ps |
| Operating Temperature Range | -40°C to +85°C | °C |
| Storage Temperature Range | -60°C to +150°C | °C |
Key Features
- Serial interface compatible with SPI, QSPI, and MICROWIRE devices without external logic.
- Internal track/hold circuit, clock generator, and bandgap reference.
- Software-configurable unipolar and bipolar input ranges.
- Three user-programmable logic outputs for controlling external multiplexers or PGAs.
- Low power operation with a shutdown mode consuming 2.5µA.
- High dynamic performance with SINAD ≥ 81dB.
- Internal or external reference options.
Applications
- Industrial process control.
- Industrial I/O modules.
- Data-acquisition systems.
- Medical instruments.
- Portable and battery-powered equipment.
Q & A
- What is the resolution of the MAX1142 ADC?
The MAX1142 has a resolution of 14 bits. - What are the sampling rates for the MAX1142?
The sampling rates are 200ksps for bipolar inputs and 150ksps for unipolar inputs. - What are the input voltage ranges for the MAX1142?
The input voltage ranges are 0 to +12V for unipolar inputs and ±12V for bipolar inputs. - What is the supply voltage for the MAX1142?
The supply voltage is +5V ±5%. - How much power does the MAX1142 consume in unipolar mode?
The power consumption is 7.5mA in unipolar mode. - What is the SINAD of the MAX1142?
The SINAD is ≥ 81dB. - Can the MAX1142 be used with external references?
Yes, the MAX1142 supports both internal and external reference options. - What is the operating temperature range of the MAX1142?
The operating temperature range is -40°C to +85°C. - How many user-programmable logic outputs does the MAX1142 have?
The MAX1142 has three user-programmable logic outputs. - What is the shutdown current of the MAX1142?
The shutdown current is 2.5µA.
