Overview
The MAX1145BCAP+ is a 14-bit analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This device is part of the MAX1144/MAX1145 series, known for its high accuracy and versatility in various applications. The MAX1145BCAP+ operates at a sampling rate of 150ksps and is designed for use with single 3.3V supply voltage. It features a serial interface compatible with SPI, QSPI, and MICROWIRE protocols, making it easy to integrate into a wide range of systems.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|---|
| Resolution | - | - | 14 | - | - | Bits |
| Relative Accuracy (INL) | - | Bipolar mode | ±2 | - | - | LSB |
| Differential Nonlinearity (DNL) | - | Bipolar mode | -1.00 | - | +1.75 | LSB |
| Transition Noise | - | - | - | 0.47 | - | LSBRMS |
| Offset Error | - | Bipolar | - | - | ±6 | mV |
| Gain Error | - | Bipolar | - | - | ±0.3% | %FSR |
| Analog Input Range | - | Bipolar | -2.048 | - | +2.048 | V |
| Input Impedance | - | Bipolar | 3.4 | 5.3 | - | kΩ |
| Input Capacitance | - | - | - | - | 32 | pF |
| Conversion Rate | - | - | - | - | 150 | ksps |
| Operating Temperature Range | - | - | -40 | - | +85 | °C |
Key Features
- High Resolution: 14-bit resolution providing high accuracy in analog-to-digital conversion.
- Flexible Input Range: Supports both unipolar and bipolar input modes, with ranges from 0 to +VREF (unipolar) and –VREF to +VREF (bipolar).
- Serial Interface Compatibility: Compatible with SPI, QSPI, and MICROWIRE protocols for easy integration into various systems.
- Single Supply Voltage: Operates on a single 3.3V supply voltage, simplifying power management.
- Low Power Consumption: Low power dissipation, making it suitable for battery-powered and power-sensitive applications.
- Internal/External Clock Selection: Allows selection between internal and external conversion clocks, offering flexibility in system design.
Applications
The MAX1145BCAP+ is versatile and can be used in a variety of applications, including:
- Industrial Automation: For precise measurement and control in industrial environments.
- Medical Devices: In medical equipment requiring high accuracy and reliability.
- Aerospace and Defense: For applications demanding high precision and robustness.
- Automotive Systems: In automotive systems that require accurate analog-to-digital conversion.
- Test and Measurement Equipment: For precise measurement and data acquisition.
Q & A
- What is the resolution of the MAX1145BCAP+ ADC?
The MAX1145BCAP+ has a resolution of 14 bits. - What are the operating temperature ranges for the MAX1145BCAP+?
The operating temperature range is from -40°C to +85°C. - What is the sampling rate of the MAX1145BCAP+?
The sampling rate is 150ksps. - Does the MAX1145BCAP+ support both unipolar and bipolar input modes?
Yes, it supports both unipolar and bipolar input modes. - What is the input range for bipolar mode in the MAX1145BCAP+?
The input range for bipolar mode is from –VREF to +VREF, where VREF is typically 2.048V. - Can the MAX1145BCAP+ be powered by a single supply voltage?
Yes, it operates on a single 3.3V supply voltage. - What serial interfaces is the MAX1145BCAP+ compatible with?
The MAX1145BCAP+ is compatible with SPI, QSPI, and MICROWIRE protocols. - How does the MAX1145BCAP+ select between internal and external clocks?
The selection between internal and external clocks is done through the control byte, where the INT/EXT bit determines the clock source. - What is the typical input impedance of the MAX1145BCAP+ in bipolar mode?
The typical input impedance in bipolar mode is 5.3 kΩ. - What is the storage temperature range for the MAX1145BCAP+?
The storage temperature range is from -60°C to +150°C.
