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TMP112-Q1 Scheda tecnica(PDF) 8 Page - Texas Instruments

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Il numero della parte TMP112-Q1
Spiegazioni elettronici  TMP112-Q1 Automotive Grade High-Accuracy, Low-Power, Digital Temperature Sensor in SOT563
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Produttore elettronici  TI1 [Texas Instruments]
Homepage  http://www.ti.com
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background image
Diode
temp.
sensor
Σ
ADC
Oscillator
Control
logic
Serial
interface
Config.
and temp.
register
TMP112-Q1
Temperature
SCL
1
3
6
4
ALERT
SDA
GND
2
5
V+
ADD0
TMP112-Q1
SLOS887D – SEPTEMBER 2014 – REVISED DECEMBER 2015
www.ti.com
7 Detailed Description
7.1 Overview
The TMP112-Q1 device is a digital temperature sensor that is optimal for thermal-management and thermal-
protection applications. The TMP112-Q1 device is two-wire, SMBus and I2C interface-compatible. The device is
specified over an operating temperature range of –40°C to 125°C. Figure 8 shows a block diagram of the
TMP112-Q1 device. Figure 9 illustrates the ESD protection circuitry contained in the TMP112-Q1 device.
The temperature sensor in the TMP112-Q1 device is the chip itself. Thermal paths run through the package
leads as well as the plastic package. The package leads provide the primary thermal path because of the lower
thermal resistance of the metal.
An alternative version of the TMP112-Q1 device is available. The TMP102-Q1 device has reduced accuracy, the
same micro-package, and is pin-to-pin compatible.
Table 1. Advantages of TMP112-Q1 Versus TMP102-Q1
Supply
Supply
Specified
Compatible
Supply
Local Sensor Accuracy
Device
Package
Voltage
Voltage
Resolution
Calibration
Interfaces
Current
(Max)
(Min)
(Max)
Drift Slope
SOT563
12 Bit
0.5°C: (0°C to 65°C)
I2C
TMP112-Q1
10µA
1.4V
3.6V
Yes
1.2 × 1.6 × 0.6
0.0625°C
1°C: (-40°C to 125°C)
SMBus
SOT563
12 Bit
2°C: (25°C to 85°C)
I2C
TMP102-Q1
10µA
1.4V
3.6V
No
1.2 × 1.6 × 0.6
0.0625°C
3°C: (-40°C to 125°C)
SMBus
7.2 Functional Block Diagram
Figure 8. Internal Block Diagram
8
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Product Folder Links: TMP112-Q1


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