參數(shù)資料
型號(hào)： TC820CLW
元件分類： ADC
英文描述： 1-CH DUAL-SLOPE ADC, PQCC44
封裝： PLASTIC, LCC-44
文件頁(yè)數(shù)： 18/24頁(yè)
文件大?。?/td> 185K
代理商： TC820CLW
3
TC820
3-3/4 A/D Converter with Frequency
Counter and Logic Probe
TC820-10 10/17/96
2001 Microchip Technology Inc.
DS21476A
ELECTRICAL CHARACTERISTICS: VS = 9V, TA = 25°C, unless otherwise specified.
Symbol
Parameter
Test Conditions
Min
Typ
Max
Units
Zero Input Reading
VIN = 0V
– 000
±000
+000
Digital
Full Scale = 400 mV
Reading
RE
Roll-Over Error
VIN = ±390mV
– 1
±0.2
+1
Counts
Full-Scale = 400mV
NL
Nonlinearity (Maximum
Full-Scale = 400mV
– 1
±0.2
+1
Count
Deviation From Best
Straight Line Fit)
Ratiometric Reading
VIN = VREF, TC820
1999
1999/2000
2000
Digital
CMRR
Common-Mode Rejection
VCM = ±1V, VIN = 0V
—
50
—
V/V
Ratio
Full-Scale = 400mV
(VFS = 200 mV)
VCMR
Common-Mode Voltage
Input High, Input Low
VSS + 1.5
—
VDD– 1
V
Range
eN
Noise (P-P Value Not
VIN = 0V
—
15
—
V
Exceeded 95% of Time)
Full-Scale = 400mV
IIN
Input Leakage Current
VIN = 0V
TA = 25°C—
1
10
pA
0
°C ≤ TA ≤ +70°C—
20
—
– 40
°C ≤ TA ≤ +85°C
—
100
—
VCOM
Analog Common Voltage
25 k
Between Common and VDD
(VSS – VCOM)
3.15
3.3
3.45
V
VCTC
Common Voltage
25 k
Between Common and VDD
Temperature Coefficient
0
°C ≤ TA ≤ +70°C
—
35
50
ppm/
°C
– 40
°C ≤ TA ≤ +85°C—
50
—
TCZS
Zero Reading Drift
VIN = 0V
0
°C ≤ TA ≤ +70°C
—
0.2
—
V/°C
– 40
°C ≤ TA ≤ +85°C1
TCFS
Scale Factor
VIN = 399mV
Temperature Coefficient
0
°C ≤ TA ≤ +70°C
—
1
5
ppm/
°C
– 40
°C ≤ TA ≤ +85°C—
5
—
Ext Ref = 0 ppm/
°C
IS
Supply Current
VIN = 0V
—
1
1.5
mA
Peak-to-Peak Backplane
VS = 9V
4.25
4.7
5.3
V
Drive Voltage
VDISP = DGND
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 .............................. 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
Lead Temperature (Soldering, 10 sec) ................... 300
°C
*Static-sensitive devices. Unused devices should be stored in conductive
material to protect against static discharge and static fields. 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 operational sections of the specifications is not implied.
Exposure to absolute maximum rating conditions for extended periods may
affect device reliability.
NOTES: 1. Input voltages may exceed the supply voltages provided that
input current is limited to
±100A. 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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