Overview
The MAX144BEUA+ 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 battery-powered and data-acquisition applications where power consumption and space are critical.
The MAX144BEUA+ features two single-ended channels, an internal track/hold circuit, and a high-speed, 3-wire serial interface compatible with SPI, QSPI, and MICROWIRE protocols. The device is known for its low power consumption, fast wake-up time, and automatic power-down mode, which further reduces power usage.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VDD) | 2.7 | 5.25 | V | |
| Power Consumption (108ksps, +3V Supply) | 0.9 | mA | ||
| Power Consumption (10ksps, +3V Supply) | 0.1 | mA | ||
| Power Consumption (1ksps, +3V Supply) | 0.01 | mA | ||
| Power-Down Mode Current | 0.2 | µA | ||
| Sampling Rate | 108 | ksps | ||
| Resolution | 12 | bits | ||
| Operating Temperature Range | -40 | 85 | °C | |
| Storage Temperature Range | -65 | 150 | °C | |
| Lead Temperature (soldering, 10s) | 300 | °C |
Key Features
- Single-supply operation: +2.7V to +5.25V
- Two single-ended channels (MAX144)
- Low power consumption: 0.9mA at 108ksps, 100µA at 10ksps, and 10µA at 1ksps with +3V supply
- Internal track/hold circuit
- High-speed, 3-wire serial interface compatible with SPI, QSPI, and MICROWIRE
- Fast wake-up time: 2.5µs
- Automatic power-down mode: 0.2µA
- Space-saving 8-pin µMAX package
- Pin-compatible 10-bit versions available (MAX157 and MAX159)
Applications
The MAX144BEUA+ is ideal for various applications due to its low power consumption, high accuracy, and compact package size. Key applications include:
- Battery-powered devices
- Data-acquisition systems
- Circuits with demanding power-consumption and space requirements
- Industrial automation
- Medical devices
- Consumer electronics requiring low power and high precision ADCs
Q & A
- What is the supply voltage range for the MAX144BEUA+?
The supply voltage range is from +2.7V to +5.25V.
- How many channels does the MAX144BEUA+ have?
The MAX144BEUA+ has two single-ended channels.
- What is the maximum sampling rate of the MAX144BEUA+?
The maximum sampling rate is 108ksps.
- What is the power consumption at 108ksps with a +3V supply?
The power consumption is 0.9mA at 108ksps with a +3V supply.
- Does the MAX144BEUA+ have an internal clock?
Yes, the MAX144BEUA+ has an on-chip clock.
- What is the wake-up time from power-down mode?
The wake-up time is 2.5µs.
- What is the power consumption in power-down mode?
The power consumption in power-down mode is 0.2µA.
- Is the MAX144BEUA+ compatible with SPI, QSPI, and MICROWIRE interfaces?
Yes, it is compatible with SPI, QSPI, and MICROWIRE interfaces.
- What is the operating temperature range for the MAX144BEUA+?
The operating temperature range is -40°C to +85°C.
- What package type is the MAX144BEUA+ available in?
The MAX144BEUA+ is available in an 8-pin µMAX package.
