Overview
The MAX1254AEUE+T is a stand-alone, 10-channel, 12-bit system monitor analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This device is part of the MAX1253/MAX1254 family, designed for multichannel system-monitoring applications. It features a programmable single-ended/differential multiplexer that accepts voltage and remote-diode temperature-sensor inputs, making it versatile for various monitoring tasks.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Resolution | Number of bits | 12-bit |
| Number of Channels | Total input channels | 10 (8 external, 2 internal) |
| Sampling Rate | Maximum sampling rate | 94ksps (auto mode, single channel enabled) |
| Power Consumption | Supply current at different sampling rates | 5mW (1.7mA at 3V), 190µA at 2ksps, < 8µA at 50sps |
| Temperature Sensor | Internal temperature sensor accuracy | ±1°C |
| Package | Package type | 16-pin TSSOP |
| Operating Range | Temperature operating range | -40°C to +85°C |
Key Features
- Programmable single-ended/differential multiplexer for voltage and remote-diode temperature-sensor inputs.
- Independent monitoring of input channels without microprocessor interaction.
- User-defined high and low limits, as well as the number of fault cycles allowed before generating an interrupt.
- Recursive data averaging for noise reduction.
- Programmable wait intervals between conversion sequences to select the sample rate.
- Low power consumption, making it suitable for hand-held and battery-powered applications.
- AutoShutdown feature to reduce supply current during idle periods.
Applications
The MAX1254AEUE+T is ideal for multichannel system-monitoring applications, including:
- System health monitoring in industrial and automotive systems.
- Remote sensor monitoring.
- Battery-powered devices where low power consumption is critical.
- Hand-held devices requiring precise and efficient monitoring capabilities.
Q & A
- What is the resolution of the MAX1254AEUE+T ADC?
The MAX1254AEUE+T has a 12-bit resolution.
- How many input channels does the MAX1254AEUE+T have?
The device has 10 input channels, with 8 external and 2 internal channels.
- What is the maximum sampling rate of the MAX1254AEUE+T?
The maximum sampling rate is 94ksps in auto mode with a single channel enabled.
- How does the MAX1254AEUE+T manage power consumption?
The device features low power consumption, with 5mW (1.7mA at 3V) at maximum sampling rate, 190µA at 2ksps, and less than 8µA at 50sps. It also includes an AutoShutdown feature.
- What is the accuracy of the internal temperature sensor?
The internal temperature sensor has an accuracy of ±1°C.
- In what package is the MAX1254AEUE+T available?
The device is available in a 16-pin TSSOP package.
- What is the operating temperature range of the MAX1254AEUE+T?
The operating temperature range is -40°C to +85°C.
- Can the MAX1254AEUE+T perform data averaging?
Yes, the device can perform recursive data averaging for noise reduction.
- How does the MAX1254AEUE+T handle fault conditions?
The device generates an interrupt when any variable exceeds user-defined limits, and it allows configuration of the number of fault cycles before the interrupt is generated.
- Is the MAX1254AEUE+T suitable for battery-powered applications?
Yes, the low power consumption makes it suitable for hand-held and battery-powered applications.
