2001-2012 Microchip Technology Inc. DS21479D-page 3
TC850
1.0 ELECTRICAL SPECIFICATIONS
Absolute Maximum Ratings*
Positive Supply Voltage..........................................+6V
Negative Supply Voltage....................................... - 9V
Analog Input Voltage (IN+ pr IN-).............. V
DD
to V
SS
Voltage Reference Input:
(REF
1
+, REF
1
–, REF
2
+).................. V
DD
to V
SS
Logic Input Voltage.............V
DD
+ 0.3V to GND – 0.3V
Current Into Any Pin...........................................10 mA
While Operating .....................................100 A
Ambient Operating Temperature Range
C Device.......................................0°C to +70°C
I Device......................................-25°C to +85°C
Package Power Dissipation (T
A
70°C)
CerDIP .....................................................2.29
Plastic DIP................................................1.23
Plastic PLCC ...........................................1.23
*Stresses above those listed under “Absolute
Maximum Ratings” may cause permanent damage to
the device. These are stress ratings only and functional
operation of the device at these or any other conditions
above those indicated in the operation sections of the
specifications is not implied. Exposure to Absolute
Maximum Rating conditions for extended periods may
affect device reliability.
TABLE 1-1: TC850 ELECTRICAL SPECIFICATIONS
Electrical Characteristics: V
S
= ±5V; F
CLK
= 61.44kHz, V
FS
= 3.2768V, T
A
= 25°C, Figure 1-1, unless otherwise specified.
Symbol Parameter Min Typ Max Unit Test Conditions
Zero Scale Error ±0.25 ±0.5 LSB V
IN
= 0V
End Point Linearity Error — ±1 ±2 LSB -V
FS
V
IN
+V
FS
Differential Nonlinearity — ±0.1 ±0.5 LSB
I
IN
Input Leakage Current — 30 75 pA V
IN
= 0V, T
A
= 25°C
— 1.1 3 nA -25° T
A
+85°C
V
CMR
Common Mode Voltage Range V
SS
+ 1.5 — V
SS
– 1.5 V Over Operating Temperature Range
CMRR Common Mode Rejection Ratio — 80 — dB V
IN
= 0V, V
CM
= ±1V
Full Scale Gain Temperature
Coefficient
— 2 5 ppm/°C External Ref. Temperature
Coefficient = 0 ppm/°C
0°C T
A
+70°C
Zero Scale Error
Temperature Coefficient
— 0.3 2
V/°C V
IN
= 0V
0°C T
A
+70°C
Full Scale Magnitude
Symmetry Error
— 0.5 2 LSB V
IN
= ±3.275V
e
N
Input Noise — 30 — V
P-P
Not Exceeded 95% of Time
I
S
+ Positive Supply Current — 2 3.5 mA
I
S
– Negative Supply Current — 2 3.5 mA
V
OH
Output High Voltage 3.5 4.9 — V I
O
= 500 A
V
OL
Output Low Voltage — 0.15 0.4 V I
O
= 1.6 mA
I
OP
Output Leakage Current — 0.1 1 A Pins 8 -15, High-impedance State
V
IH
Input High Voltage 3.5 2.3 — V Note 3
V
IL
Input Low Voltage — 2.1 1 V Note 3
I
PU
Input Pull-Up Current — 4 — A Pins 2, 3, 4, 6, 7; V
IN
= 0V
I
PD
Input Pull-Down Current — 14 — A Pins 1, 5; V
IN
= 5V
I
OSC
Oscillator Output Current — 140 — A Pin 18, V
OUT
= 2.5V
Note 1: Demand mode, CONT/DEMAND
= LOW. Figure 8-2 timing diagram. C
L
= 100 pF.
2: Continuous mode, CONT/DEMAND
= HIGH. Figure 8-4 timing diagram.
3: Digital inputs have CMOS logic levels and internal pull-up/pull-down resistors. For TTL compatibility, external pull-up
resistors to V
DD
are recommended.
