Overview
The ADM1021ARQ, produced by Analog Devices Inc., is a sophisticated two-channel digital thermometer designed for precise temperature monitoring in various electronic systems. This device is particularly useful in applications requiring thermal management, such as personal computers, notebook computers, smart batteries, industrial controllers, telecommunications equipment, and instrumentation. It operates with a supply voltage range of 3 V to 5.5 V and is packaged in a small 16-lead QSOP (Quarter Size Outline Package).
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices Inc. |
| Package/Case | QSOP-16 |
| Supply Voltage | 3 V to 5.5 V |
| Temperature Range | 0°C to 100°C |
| Number of Channels | 2 |
| Communication Interface | SMBus (System Management Bus) |
| Address Pins | 2 (ADD0 and ADD1) |
| Temperature Measurement Method | Uses a diode-connected PNP transistor or an on-chip temperature sensor |
Key Features
- Dual-channel temperature measurement: One channel for remote temperature sensing using a diode-connected PNP transistor, and another for local temperature sensing using an on-chip temperature sensor.
- No calibration required due to a novel measurement technique that cancels out the absolute value of the transistor’s base-emitter voltage.
- Communicates over a two-wire serial interface compatible with SMBus standards.
- Programmable temperature limits and ALERT output for under and over temperature conditions.
- Standby mode and configurable conversion rate.
- Small QSOP-16 package for space-efficient designs.
Applications
- Desktop and notebook computers for CPU temperature monitoring.
- Smart batteries for thermal management.
- Industrial controllers and telecommunications equipment.
- Instrumentation and other systems requiring precise temperature monitoring.
Q & A
- What is the primary function of the ADM1021ARQ?
The primary function of the ADM1021ARQ is to provide dual-channel digital temperature measurement and under/over temperature alarm capabilities. - What is the supply voltage range for the ADM1021ARQ?
The supply voltage range for the ADM1021ARQ is 3 V to 5.5 V. - How does the ADM1021ARQ communicate with other devices?
The ADM1021ARQ communicates over a two-wire serial interface compatible with SMBus standards. - What types of temperature sensors can the ADM1021ARQ use?
The ADM1021ARQ can use a diode-connected PNP transistor for remote temperature sensing and an on-chip temperature sensor for local temperature sensing. - Does the ADM1021ARQ require calibration for temperature measurements?
No, the ADM1021ARQ does not require calibration due to its novel measurement technique that cancels out the absolute value of the transistor’s base-emitter voltage. - What are the typical applications of the ADM1021ARQ?
The ADM1021ARQ is typically used in desktop and notebook computers, smart batteries, industrial controllers, telecommunications equipment, and instrumentation. - How many address pins does the ADM1021ARQ have?
The ADM1021ARQ has two address pins (ADD0 and ADD1) which allow for the selection of up to nine different device addresses. - Can the ADM1021ARQ be configured to alert for under and over temperature conditions?
Yes, the ADM1021ARQ can be programmed to generate alerts for under and over temperature conditions. - What is the package type of the ADM1021ARQ?
The ADM1021ARQ is packaged in a QSOP-16 (Quarter Size Outline Package). - Can the conversion rate of the ADM1021ARQ be configured?
Yes, the conversion rate of the ADM1021ARQ can be configured via the SMBus interface.
