Overview
The MAX144BCUA+ is a low-power, 12-bit analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This device is part of the MAX144/MAX145 series and is available in an 8-pin µMAX package. It operates with a single supply voltage ranging from +2.7V to +5.25V, making it suitable for a variety of applications, especially those requiring low power consumption and high precision.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Channels | 2 (single-ended) |
| Converter Resolution | 12-bit |
| Sampling Speed | 108 ksps |
| Package Type | µMAX8 |
| Mounting Type | SMD |
| Operating Temperature | 0°C to 70°C |
| Relative Accuracy | 1 LSB |
| Operating Voltage | +2.7V to +5.25V |
| Operating Current | 0.9 mA |
| Power Consumption | 3.2 mW (at VDD = +3.6V, maximum sampling rate) |
| Automatic Shutdown Current | 0.2 µA |
| Serial Interface | SPI, QSPI, and MICROWIRE-compatible 3-wire serial interface |
Key Features
- Low power consumption: 3.2 mW at maximum sampling rate and 0.2 µA in automatic shutdown mode.
- Fast wake-up time: 2.5 µs.
- On-chip clock and high-speed 3-wire serial interface compatible with SPI, QSPI, and MICROWIRE.
- Successive approximation ADC with a conversion time of 7.4 µs.
- Single-ended input operation with two channels (CH0 and CH1) that can be connected to different signal sources.
- Excellent dynamic performance and low power, making it ideal for battery-powered and data-acquisition applications.
Applications
The MAX144BCUA+ is well-suited for various applications that require low power consumption and high precision, such as:
- Battery-powered devices.
- Data-acquisition systems.
- Circuits with demanding power-consumption and space requirements.
Q & A
- What is the resolution of the MAX144BCUA+ ADC?
The MAX144BCUA+ has a 12-bit resolution.
- How many channels does the MAX144BCUA+ support?
The MAX144BCUA+ supports 2 single-ended channels.
- What is the sampling speed of the MAX144BCUA+?
The sampling speed is up to 108 ksps.
- What is the operating voltage range of the MAX144BCUA+?
The operating voltage range is +2.7V to +5.25V.
- What type of serial interface does the MAX144BCUA+ use?
The MAX144BCUA+ uses a 3-wire serial interface compatible with SPI, QSPI, and MICROWIRE.
- How much power does the MAX144BCUA+ consume at maximum sampling rate?
The power consumption is 3.2 mW at VDD = +3.6V and maximum sampling rate.
- What is the wake-up time of the MAX144BCUA+?
The wake-up time is 2.5 µs.
- What is the conversion time of the MAX144BCUA+?
The conversion time is 7.4 µs.
- Can the MAX144BCUA+ operate in pseudo-differential mode?
No, the MAX144BCUA+ operates in single-ended mode. For pseudo-differential inputs, consider the MAX145.
- What is the typical operating current of the MAX144BCUA+?
The typical operating current is 0.9 mA.
