Overview
The ADM1032ARMZ from onsemi is a dual-channel digital thermometer and under/overtemperature alarm designed for use in PCs and thermal management systems. This device is capable of measuring the temperature of a remote thermal diode, which can be located on the processor die or be a discrete device, with an accuracy of ±1°C. It also measures its ambient temperature. The ADM1032ARMZ communicates over a 2-wire serial interface compatible with System Management Bus (SMBus) standards. It is particularly useful in desktop and notebook computers, smart batteries, industrial controllers, telecommunications equipment, instrumentation, and embedded systems.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage Range | 3V to 5.5V | V |
| Operating Current | 170µA | A |
| Standby Current | 5.5µA | A |
| Temperature Accuracy (Remote) | ±1°C | °C |
| Temperature Accuracy (Local) | ±3°C | °C |
| Temperature Resolution (Remote) | 0.125°C | °C |
| Temperature Resolution (Local) | 1°C | °C |
| Measurement Rate | Up to 64 measurements per second | measurements/s |
| Output Interface | I2C, SMBus | |
| Package Type | MSOP | |
| No. of Pins | 8 | |
| Operating Temperature Range | 0°C to 120°C | °C |
| MSL Rating | MSL 1 - Unlimited |
Key Features
- Dual-channel digital thermometer for remote and local temperature monitoring.
- Accurate to ±1°C for remote temperature and ±3°C for local temperature.
- Novel measurement technique that cancels out the absolute value of the transistor’s base-emitter voltage, eliminating the need for calibration.
- Supports SMBus alert and has a 4C SMBus address.
- Programmable under/overtemperature limits and fault queue.
- Overtemperature fail-safe THERM (complementary) output with programmable THERM limits and hysteresis.
- Offset registers for system calibration.
- Fast measurement rate of up to 64 measurements per second.
Applications
- Desktop and notebook computers.
- Smart batteries.
- Industrial controllers.
- Telecommunications equipment.
- Instrumentation.
- Embedded systems.
- Sensing and instrumentation.
Q & A
- What is the primary function of the ADM1032ARMZ?
The ADM1032ARMZ is a dual-channel digital thermometer and under/overtemperature alarm designed for monitoring remote and local system temperatures.
- What is the accuracy of the remote temperature measurement?
The remote temperature measurement is accurate to ±1°C.
- What communication interface does the ADM1032ARMZ use?
The device communicates over a 2-wire serial interface compatible with System Management Bus (SMBus) standards.
- What is the supply voltage range for the ADM1032ARMZ?
The supply voltage range is from 3V to 5.5V.
- What is the operating current and standby current of the ADM1032ARMZ?
The operating current is 170µA, and the standby current is 5.5µA.
- Can the ADM1032ARMZ be calibrated?
No, the device uses a novel measurement technique that cancels out the absolute value of the transistor’s base-emitter voltage, eliminating the need for calibration.
- What is the resolution of the remote temperature measurement?
The resolution of the remote temperature measurement is 0.125°C.
- What are the programmable features of the ADM1032ARMZ?
The device allows for programmable under/overtemperature limits, fault queue, THERM limits, and hysteresis.
- What is the package type and number of pins of the ADM1032ARMZ?
The package type is MSOP with 8 pins.
- What are the typical applications of the ADM1032ARMZ?
Typical applications include desktop and notebook computers, smart batteries, industrial controllers, telecommunications equipment, instrumentation, and embedded systems.
