參數(shù)資料
型號(hào)： TC820CKW
元件分類： ADC
英文描述： 1-CH DUAL-SLOPE ADC, PQFP44
封裝： PLASTIC, QFP-44
文件頁數(shù)： 23/28頁
文件大小： 616K
代理商： TC820CKW
TC820
DS21476B-page 4
2002 Microchip Technology Inc.
1.0
ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings*
Supply Voltage (VDD to GND) ................................15V
Analog Input Voltage:
(Either Input) (Note 1) ............................ VDD to VSS
Reference Input Voltage (Either Input) ....... VDD to VSS
Digital Inputs........................................... VDD to DGND
VDISP ....................................... VDD to (DGND – 0.3V)
Package Power Dissipation (TA –70°C) (Note 2):
40-Pin Plastic DIP ......................................... 1.23W
44-Pin PLCC ..................................................1.23W
44-Pin Plastic Flat Package (PQFP) ..............1.00W
Operating Temperature Range:
"C" Devices ......................................... 0°C to +70°C
"E" Devices.......................................-40°C to +85°C
Storage Temperature Range .............. -65°C to +150°C
*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.
TC820 ELECTRICAL SPECIFICATIONS
Electrical Characteristics: VS =9V, TA = 25°C, unless otherwise specified.
Symbol
Parameter
Min
Typ
Max
Units
Test Conditions
Zero Input Reading
-000
±000
+000
Digital
Reading
VIN =0V
Full Scale = 400mV
RE
Rollover Error
-1
±0.2
+1
Counts
VIN = ±390mV
Full Scale = 400mV
NL
Nonlinearity
(Maximum Deviation From Best
Straight Line Fit)
-1
±0.2
+1
Count
Full Scale = 400mV
Ratiometric Reading
1999
1999/2000
2000
—
VIN =VREF,TC820
CMRR
Common Mode Rejection Ratio
—
50
—
V/V
VCM =±1V, VIN =0V
Full Scale = 400mV
(VFS =200mV)
VCMR
Common Mode Voltage Range
VSS +1.5
—
VDD – 1
Input High, Input Low
eN
Noise (P-P Value Not
Exceeded 95% of Time)
—15
—
VV
IN =0V
Full Scale = 400mV
IIN
Input Leakage Current
—
VIN =0V
—1
10
pA
TA =25°C
—20
—
pA
0°C
≤ T
A ≤ +70°C
—100
—
pA
-40°C
≤ TA ≤ +85°C
VCOM
Analog Common Voltage
3.15
3.3
3.45
V
25k
between Common and
VDD (VSS -VCOM)
VCTC
Common Voltage Temperature
Coefficient
——
—
25k
Between Common and
VDD
—35
50
ppm/°C
0°C
≤ T
A ≤ +70°C
—50
—
-40°C
≤ TA ≤ +85°C
Note
1:
Input voltages may exceed the supply voltages provided that input current is limited to ±100
A. Current above this value
may result in invalid display readings, but will not destroy the device if limited to ±1mA.
2:
Dissipation ratings assume device is mounted with all leads soldered to printed circuit board.
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