Datasheet
TC77
DS20092B-page 2 2002-2012 Microchip Technology Inc.
1.0 ELECTRICAL
CHARACTERISTICS
1.1 Absolute Maximum Ratings †
V
DD
........................................................................6.0V
All inputs and outputs w.r.t. V
SS
..... -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
Machine Model (MM)......................................>200V
† 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
SI/O Serial Data Pin
SCK Serial Clock
V
SS
Ground
CS Chip Select (Active-Low)
NC No Connection
V
DD
Power Supply
DC CHARACTERISTICS
Electrical Specifications: Unless otherwise noted, all parameters apply at V
DD
= 2.7V to 5.5V and
T
A
= -55°C to +125°C.
Parameters Sym Min Typ Max Units Conditions
Power Supply
Operating Voltage Range V
DD
2.7 — 5.5 V Note 1
Operating Current I
DD
— 250 400 µA Continuous Temperature
Conversion Mode
Power-On Reset Threshold V
POR
1.2 1.6 2.2 V V
DD
falling or rising edge
Standby Supply Current I
DD-
STANDBY
— 0.1 1.0 µA Shutdown Mode
Temperature to Bits Converter
Resolution — 13 — Bits ADC LSb = 0.0625°C/bit
(Note 4)
Temperature Conversion Time t
CT
— 300 400 ms
Temperature Accuracy
(Note 1)
T
ERR
-1.0
-2.0
-3.0
—
—
—
+1.0
+2.0
+3.0
°C +25°C < T
A
< +65°C
-40°C < T
A
< +85°C
-55°C < T
A
< +125°C
TC77-3.3MXX: V
DD
= 3.3V
TC77-5.0MXX: V
DD
= 5.0V
Note 1: The TC77-3.3MXX and TC77-5.0MXX will operate from a supply voltage of 2.7V to 5.5V. However, the tem-
perature accuracy of the TC77-3.3MXX and TC77-5.0MXX is specified at the nominal operating voltages of
3.3V and 5.0V, respectively. As V
DD
varies from the nominal operating value, the accuracy may be
degraded (Refer to Figures 2-6 and 2-7).
2: All time measurements are measured with respect to the 50% point of the signal.
3: Load Capacitance, C
L
= 80 pF, is used for AC timing measurements of output signals.
4: Resolution = Temperature Range/No. of Bits = (+255°C – -256°C) / (2
13
)
Resolution = 512/8192 = 0.0625°C/Bit