Overview
The ADT7470ARQZ-REEL7, produced by Analog Devices Inc., is a multichannel temperature sensor and PWM fan controller designed for systems that require active cooling. This device is part of the ADT7470 series and is packaged in a 16-Lead QSOP (Quad Flat Small Outline Package). It is suitable for new designs, although newer alternatives may exist. The ADT7470ARQZ-REEL7 is RoHS compliant and operates within an extended temperature range of -40°C to 125°C.
Key Specifications
| Parameter | Value | Unit | Test Conditions/Comments |
|---|---|---|---|
| Number of Channels | 10 | - | - |
| Data Output Interface | Digital, Serial I2C | - | - |
| Device Primary Function | PWM Output Fan Control, Temperature Sensor | - | - |
| Operating Temperature Range | -40 to 125 | °C | - |
| Temp Sensor Interface | Internal Temp Sensor | - | - |
| Vs+ (max) | 5.5 | V | - |
| Vs+ (min) | 3 | V | - |
| Supply Current, ICC | 0.5 to 0.8 | mA | TA = -40°C to +125°C, VCC = 3.0 V to 5.5 V |
| Standby Current, ICC | 4 | µA | TA = -40°C to +125°C, VCC = 3.0 V to 5.5 V |
| Package | 16-Lead QSOP | - | - |
Key Features
- Multi-Channel Temperature Sensing: The ADT7470ARQZ-REEL7 can monitor up to 10 daisy-chained TMP05 temperature sensors.
- PWM Fan Control: The device includes PWM outputs to control fan speed, with the ability to drive each fan under software control.
- Serial Bus Interface: Communicates via a serial system management bus, supporting both SMBus and fast I2C standards (up to 400 kHz).
- General-Purpose I/O Pins: Four pins can be configured as either general-purpose logic pins or as PWM outputs.
- Address Selection: A 7-bit serial bus address with configurable address selection using the ADDR pin.
- Alert and Interrupts: SMBALERT interrupt signals failures to the system controller, and FULL_SPEED input allows fans to be set to maximum speed by external hardware.
Applications
- Servers: Ideal for server cooling systems that require precise temperature monitoring and fan control.
- Networking and Telecommunications Equipment: Suitable for equipment that needs reliable and efficient cooling solutions.
- Desktops: Can be used in desktop computers to manage cooling systems effectively.
Q & A
- What is the primary function of the ADT7470ARQZ-REEL7?
The primary function is PWM output fan control and temperature sensing.
- How many temperature sensors can the ADT7470ARQZ-REEL7 monitor?
It can monitor up to 10 daisy-chained TMP05 temperature sensors.
- What is the operating temperature range of the ADT7470ARQZ-REEL7?
The operating temperature range is -40°C to 125°C.
- What type of interface does the ADT7470ARQZ-REEL7 use for data output?
The device uses a digital, serial I2C interface.
- Is the ADT7470ARQZ-REEL7 RoHS compliant?
Yes, it is RoHS compliant.
- What is the maximum supply voltage for the ADT7470ARQZ-REEL7?
The maximum supply voltage is 5.5 V.
- How many general-purpose I/O pins does the ADT7470ARQZ-REEL7 have?
The device has four general-purpose I/O pins.
- What is the purpose of the SMBALERT interrupt in the ADT7470ARQZ-REEL7?
The SMBALERT interrupt signals failures to the system controller.
- Can the ADT7470ARQZ-REEL7 be used in desktop computers?
Yes, it can be used in desktop computers for managing cooling systems.
- What is the typical standby current of the ADT7470ARQZ-REEL7?
The typical standby current is 4 µA.
