AD7414ARTZ-0REEL7 SENSOR DIGITAL -40C-125C SOT23-6 ADI

FEATURES

10-bit temperature-to-digital converter

Temperature range: −40°C to +125°C

Typical accuracy of ±0.5°C at +40°C

SMBus/I2C®-compatible serial interface

3 μA power-down current

Temperature conversion time: 29 μs typ

Space-saving 6-lead (AD7414) and 5-lead (AD7415)

SOT-23 packages

Pin selectable addressing via AS

Overtemperature indicator (AD7414 Only)

SMBus alert function (AD7414 only)

4 versions allow 8 I2C addresses (AD7414)

2 versions allow 6 I2C addresses (AD7415)

APPLICATIONS

Hard disk drives

Personal computers

Electronic test equipment

Office equipment

Domestic appliances

Process control

Cellular phones

GENERAL DESCRIPTION

The AD7414/AD7415 are complete temperature monitoring systems in 6-lead and 5-lead SOT-23 packages. They contain a band gap temperature sensor and a 10-bit ADC to monitor and digitize the temperature reading to a resolution of 0.25°C.

The AD7414/AD7415 provide a 2-wire serial interface that is compatible with SMBus and I2C interfaces. The parts come in four versions: the AD7414/AD7415-0, AD7414/AD7415-1, AD7414-2, and AD7414-3. The AD7414/AD7415-0 and AD7414/AD7415-1 versions provide a choice of three different SMBus addresses for each version. All four AD7414 versions give the possibility of eight different I2C addresses while the two AD7415 versions allow up to six I2C addresses to be used.

The AD7414/AD7415’s 2.7 V supply voltage, low supply current, serial interface, and small package size make them ideal for a variety of applications, including personal computers, office equipment, cellular phones, and domestic appliances.

In the AD7414, on-chip registers can be programmed with high and low temperature limits, and an open-drain overtemperature indicator output (ALERT) becomes active when a programmed limit is exceeded. A configuration register allows programming of the state of the ALERT output (active high or active low). This output can be used as an interrupt or as an SMBus alert.

PRODUCT HIGHLIGHTS

1. On-chip temperature sensor. The sensor allows an accurate measurement of the ambient temperature to be made. It is capable of ±0.5°C temperature accuracy.

2. SMBus/I2C-compatible serial interface. The interface offers pin selectable choice of three addresses per version of the AD7414/AD7415, eight address options in total for the AD7414, and six in total for the AD7415.

3. Supply voltage of 2.7 V to 5.5 V.

4. Space-saving 5-lead and 6-lead SOT-23 packages.

5. 10-bit temperature reading to 0.25°C resolution.

6. Overtemperature indicator. This indicator can be software disabled. It is used as an interrupt of SMBus alert.

7. One-shot and automatic temperature conversion rates.