TC72 Datasheet, PDF (3/24 Pages) Microchip Technology – Digital Temperature Sensor with SPI™ Interface

TC72
1.0 ELECTRICAL
CHARACTERISTICS
1.1 Maximum Ratings†
V_DD........................................................................ 6.0V
All inputs and outputs w.r.t. GND ...-0.3V to V_DD +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
NC
CE
SCK
GND
SDO
SDI
NC
V_DD
Function
No Internal Connection
Chip Enable Input, the device is selected
when this input is high
Serial Clock Input
Ground
Serial Data Output
Serial Data Input
No Internal Connection
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
Operating Current:
Normal Mode, ADC Active
V_DD
2.65
—
5.5
V Note 1
I_DD-CON
—
250
400
µA Continuous temp. conversion mode
(Shutdown Bit = ‘0’)
Shut-Down Supply Current
I_SHD
—
0.1
1.0
µA Shutdown Mode (Shutdown Bit = ‘1’)
Temperature Sensor and Analog-to-Digital Converter
Temperature Accuracy
(Note 1)
Resolution
T_ACY
-2.0
—
+2.0
°C -40°C < T_A < +85°C
-3.0
—
+3.0
-55°C < T_A < +125°C
—
10
—
Bits Note 4
ADC Conversion Time
Digital Input / Output
t_CONV
—
150
200
ms
High Level Input Voltage
V_IH
0.7 V_DD
—
—
V
Low Level Input Voltage
V_IL
—
—
0.2 V_DD
V
High Level Output Voltage
V_OH
0.7 V_DD
—
—
V I_OH = 1 mA
Low Level Output Voltage
V_OL
—
—
0.2 V_DD
V I_OL = 4 mA
Input Resistance
R_IN
1.0
—
—
MΩ
Pin Capacitance
C_IN
—
15
—
pF
C_OUT
—
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 V_DD 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 C_L = 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
 2002 Microchip Technology Inc.
DS21743A-page 3