Overview
The AMC80AIPWR, produced by Texas Instruments, is a comprehensive system hardware monitor designed to integrate multiple monitoring functions into a single chip. This device features a seven-channel, 10-bit analog-to-digital converter (ADC), fan-speed monitoring, and a two-wire SMBus serial interface. It is packaged in a 24-lead TSSOP and operates over a wide temperature range of –40°C to +125°C. The AMC80AIPWR is ideal for continuous monitoring of power supply, temperature, and fan speeds in various applications, making it a versatile component for system health monitoring.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Supply Voltage (V+) | 3 | 5.5 | V | |
| Operating Temperature (TA) | –40 | 125 | °C | |
| Analog Input Resolution | 10-bit | |||
| Analog Input Range (Default) | 0 | 2.56 V | V | |
| Analog Input Range (Programmable) | 0 | V+ | V | |
| Least Significant Bit (LSB) | 2.5 mV | mV | ||
| Fan RPM Error | –10% | 10% | % | |
| Quiescent Current (Average) | 25 | 100 | µA | |
| Quiescent Current (Shutdown Mode) | 25 | 100 | µA |
Key Features
- Seven-Channel 10-Bit ADC: Converts analog inputs with a resolution of 10 bits and a default input range of 0 V to 2.56 V, or a programmable range of 0 V to V+.
- Fan-Speed Monitoring: Includes two programmable fan-speed monitors that can accept either fan failure indicators or tachometer signals.
- Temperature Monitoring: Supports both linear and digital temperature sensors, with temperature conversion to 9-bit or 12-bit resolution.
- Interrupt Alarms: Programmable upper over-limit and lower under-limit alarms for temperature and analog inputs.
- Chassis Intrusion Detection: General-purpose input for chassis intrusion detection.
- Two-Wire SMBus Interface: Compatible with fast mode (400 kHz) and high-speed mode (3.4 MHz), with a timeout reset function to prevent bus lockup.
- Low Power Consumption: Operates with low supply current and includes a shutdown mode.
- Pin Compatibility: Pin-compatible with LM96080 and LM80.
Applications
- Communications Equipment: Suitable for monitoring in telecommunications and networking devices.
- Servers: Ideal for server health monitoring, including temperature, power supply, and fan speeds.
- Industrial and Medical Equipment: Used in various industrial and medical devices requiring precise monitoring.
- Storage Area Networks: Applied in storage systems to ensure optimal operating conditions.
- Set-Top Boxes: Utilized in consumer electronics for reliable operation.
- Test and Measurement Equipment: Employed in test and measurement devices for accurate monitoring.
Q & A
- What is the operating temperature range of the AMC80AIPWR?
The AMC80AIPWR operates over a temperature range of –40°C to +125°C.
- What is the resolution of the analog-to-digital converter (ADC) in the AMC80AIPWR?
The ADC has a resolution of 10 bits.
- How many analog input channels does the AMC80AIPWR have?
The AMC80AIPWR has seven analog input channels (CH0 to CH6).
- What types of fan-speed monitoring does the AMC80AIPWR support?
The AMC80AIPWR supports both fan failure indicators and tachometer signals for fan-speed monitoring.
- What is the purpose of the BTI pin in the AMC80AIPWR?
The BTI pin is used for board temperature interrupt and is driven by the over-temperature shutdown outputs of additional temperature sensors.
- What is the function of the GPI(CI) pin in the AMC80AIPWR?
The GPI(CI) pin is a general-purpose input for chassis intrusion detection, designed to accept an active high signal from an external circuit.
- How does the AMC80AIPWR handle interrupt alarms?
The AMC80AIPWR has programmable upper over-limit and lower under-limit alarms that activate when the programmed limits are exceeded, and it provides interrupt status registers and interrupt mask registers for managing these alarms.
- What is the significance of the two-wire SMBus interface in the AMC80AIPWR?
The two-wire SMBus interface supports fast mode (400 kHz) and high-speed mode (3.4 MHz), with a timeout reset function to prevent bus lockup, and it allows up to eight devices on a single bus.
- Is the AMC80AIPWR compatible with other devices?
Yes, the AMC80AIPWR is pin-compatible with LM96080 and LM80.
- What are some common applications of the AMC80AIPWR?
The AMC80AIPWR is used in communications equipment, servers, industrial and medical equipment, storage area networks, set-top boxes, and test and measurement equipment.
