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TC72 Scheda tecnica(PDF) 3 Page - Microchip Technology

Il numero della parte TC72
Spiegazioni elettronici  Digital Temperature Sensor with SPI??Interface
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 2002 Microchip Technology Inc.
DS21743A-page 3
TC72
1.0
ELECTRICAL
CHARACTERISTICS
1.1
Maximum Ratings
VDD........................................................................6.0V
All inputs and outputs w.r.t. GND ...-0.3V to VDD +0.3V
Storage temperature .......................... -65°C to +150°C
Ambient temp. with power applied ..... -55°C to +125°C
Junction Temperature ........................................ 150°C
ESD protection on all pins:
Human Body Model (HBM)............................. > 4 kV
Man Machine Model (MM)............................. > 400V
Latch-Up Current at each pin ........................ ±200 mA
Maximum Power Dissipation........................... 250 mW
† Notice: Stresses above those listed under "Maximum
Ratings" may cause permanent damage to the device. This is
a stress rating only and functional operation of the device at
those or any other conditions above those indicated in the
operation listings of this specification is not implied. Exposure
to maximum rating conditions for extended periods may affect
device reliability.
PIN FUNCTION TABLE
Name
Function
NC
No Internal Connection
CE
Chip Enable Input, the device is selected
when this input is high
SCK
Serial Clock Input
GND
Ground
SDO
Serial Data Output
SDI
Serial Data Input
NC
No Internal Connection
VDD
Power Supply
DC CHARACTERISTICS
Electrical Specifications: Unless otherwise noted, all parameters apply at V
DD = 2.65V to 5.5V, T
A = -55°C to +125 °C.
Parameters
Sym
Min
Typ
Max
Units
Conditions
Power Supply
Operating Voltage Range
VDD
2.65
5.5
V
Note 1
Operating Current:
Normal Mode, ADC Active
IDD-CON
250
400
µA
Continuous temp. conversion mode
(Shutdown Bit = ‘0’)
Shut-Down Supply Current
ISHD
0.1
1.0
µA
Shutdown Mode (Shutdown Bit = ‘1’)
Temperature Sensor and Analog-to-Digital Converter
Temperature Accuracy
(Note 1)
TACY
-2.0
+2.0
°C
-40°C < TA < +85°C
-3.0
+3.0
-55°C < TA < +125°C
Resolution
10
Bits
Note 4
ADC Conversion Time
tCONV
—150
200
ms
Digital Input / Output
High Level Input Voltage
VIH
0.7 VDD
——
V
Low Level Input Voltage
VIL
0.2 VDD
V
High Level Output Voltage
VOH
0.7 VDD
——
V
IOH = 1 mA
Low Level Output Voltage
VOL
0.2 VDD
VIOL = 4 mA
Input Resistance
RIN
1.0
M
Pin Capacitance
CIN
—15
pF
COUT
—50
Note 1: The TC72-2.8MXX, TC72-3.3MXX and TC72-5.0MXX will operate from a supply voltage of 2.65V to 5.5V. However, the
TC72-2.8MXX, TC72-3.3MXX and TC72-5.0MXX are tested and specified at the nominal operating voltages of 2.8V,
3.3V and 5.0V respectively. As VDD varies from the nominal operating value, the accuracy may be degraded. Refer to
Figure 2-5 and Figure 2-6.
2: Measured with a load of CL = 50 pF on the SDO output pin of the TC72.
3: All time measurements are measured with respect to the 50% point of the signal, except for the SCK rise and fall times.
The rise and fall times are defined as the 10% to 90% transition time.
4: Resolution = Temperature Range/No. of Bits = (+127°C – -128°C) / (210) = 256/1024 = 0.25°C/Bit


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