參數(shù)資料
型號: 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): 24/28頁
文件大?。?/td> 616K
代理商: TC820CKW
2002 Microchip Technology Inc.
DS21476B-page 5
TC820
TCZS
Zero Reading Drift
VIN =0V
—0.2
——
0°C
≤ TA ≤ +70°C
—1
-40°C
≤ T
A ≤ +85°C
TCFS
Scale Factor Temperature
Coefficient
——
VIN =399mV
—1
5
ppm/°C
0°C
≤ TA ≤ +70°C
5
ppm/°C
-40°C
≤ TA ≤ +85°C
Ext Ref = 0ppm/°C
IS
Supply Current
1
1.5
mA
VIN =0V
Peak-to-Peak Backplane
Drive Voltage
4.25
4.7
5.3
V
VS =9V
VDISP =DGND
Buzzer Frequency
5
kHz
FOSC =40kHz
Counter TIme-Base Period
1
Second
FOSC =40kHz
Low Battery Flag Voltage
6.7
7
7.3
V
VDD to VSS
VIL
Input Low Voltage
DGND + 1.5
V
VIH
Input High Voltage
VDD –1.5
V
VOL
Output Low Voltage,
UR, OR Outputs
VDD –1.5
DGND + 0.4
V
IL =50A
Control Pin Pull-down Current
5
AV
IN =VDD
TC820 ELECTRICAL SPECIFICATIONS (CONTINUED)
Electrical Characteristics: VS =9V, TA = 25°C, unless otherwise specified.
Symbol
Parameter
Min
Typ
Max
Units
Test Conditions
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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