Features: `10-Bit Temperature-to-Digital Converter
`Temperature Range: 40 to +85
`Accuracy of ±2
`SMBus/I2C-Compatible Serial Interface
`3 A Power-Down Current
`Temperature Conversion Time: 29 s 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)
`Four Versions Allow Eight I2C Addresses (AD7414)
`Two Versions Allow Six I2C Addresses (AD7415)Application·Hard Disk Drives
·Personal Computers
·Electronic Test Equipment
·Office Equipment
·Domestic Appliances
·Process Control
·Cellular PhonesPinout
SpecificationsVDD to GND . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to +7 V
SDA Input Voltage to GND . . . . . . . . . . . . . . 0.3 V to +7 V
SDA Output Voltage to GND . . . . . . . . . . . . . 0.3 V to +7 V
SCL Input Voltage to GND . . . . . . . . . . . . . . 0.3 V to +7 V
ALERT Output Voltage to GND . . . . . . . . . . . 0.3 V to +7 V
Operating Temperature Range . . . . . . . .40°C to +85°C
Storage Temperature Range . . . . . . . . .65°C to +150°C
Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . 150°C
SOT-23, Power Dissipation . . . . . . . . . . . . . . . . . . . 450 mW
JA Thermal Impedance . . . . . . . . . . . . . . . . . . . . 240°C/W
Lead Temperature, Soldering
Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . 215°C
Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . .220°C
*Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability
| Output Type |
Digital |
| Sensor Output |
I2C ?,SMBus |
| Temp Res(°C/LSB) |
0.25°C/LSB |
| Supply Voltage Range |
+2.7V to +5.5V |
| Temp Range(s) |
-40 to +125 |
DescriptionThe AD7414/AD7415 is a complete temperature monitoring system in 6-lead and 5-lead SOT-23 packages. It contains a bandgap temperature sensor and 10-bit ADC to monitor and digitize the temperature reading to a resolution of 0.25°C.
The AD7414/AD7415 provides a 2-wire serial interface that is compatible with SMBus and I2C interfaces. The part comes in four versions, AD7414/AD7415-0, AD7414/AD7415-1, AD7414-2 and the AD7414-3. The AD7414/AD7415-0 and AD7414/AD7415-1 versions allow for 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 it 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 Over-Temperature Indicator output (ALERT), which becomes active when a programmed limit is exceeded. A configuration register allows programming of the sense of the ALERT output (active high or active low). This output can be used as an interrupt or as an SMBus alert.
I2C is a registered trademark of Philips Corporation
AD7414 Data Sheet
