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參數(shù)資料
| 型號： | TC7129IKW |
| 元件分類： | ADC |
| 英文描述： | 1-CH DUAL-SLOPE ADC, PQFP44 |
| 封裝： | 10 X 10 MM, PLASTIC, MO-122-AA-1, QFP-44 |
| 文件頁數(shù)： | 23/28頁 |
| 文件大?。?/td> | 544K |
| 代理商： | TC7129IKW |
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TC7129
DS21459D-page 4
2006 Microchip Technology Inc.
Power
VCOM
Common Voltage
2.8
3.2
3.5
V
V+ to pin 28
Common Sink Current
—
0.6
—
mA
ΔCommon = +0.1V
Common Source Current
—
10
—
μA
ΔCommon = -0.1V
DGND
Digital Ground Voltage
4.5
5.3
5.8
V
V+ to pin 36, V+ to V– = 9V
Sink Current
—
1.2
—
mA
ΔDGND = +0.5V
Supply Voltage Range
6
9
12
V
V+ to V–
IS
Supply Current Excluding
Common Current
—
0.8
1.3
mA
V+ to V– = 9V
fCLK
Clock Frequency
—
120
360
kHz
VDISP Resistance
—
50
—
k
Ω
VDISP to V+
Low Battery Flag Activation
Voltage
6.3
7.2
7.7
V
V+ to V–
Digital
Continuity Comparator Threshold
Voltages
100
200
—
mV
VOUT pin 27 = High
—
200
400
mV
VOUT pin 27 = Low
Pull-down Current
—
2
10
μA
Pins 37, 38, 39
“Weak Output” Current
Sink/Source
—
3/3
—
μA
Pins 20, 21 sink/source
—
3/9
—
μA
Pin 27 sink/source
Pin 22 Source Current
—
40
—
μA
Pin 22 Sink Current
—
3
—
μA
TC7129 ELECTRICAL SPECIFICATIONS (CONTINUED)
Electrical Characteristics: V+ to V– = 9V, VREF = 1V, TA = +25°C, fCLK = 120 kHz, unless otherwise indicated.
Pin numbers refer to 40-pin DIP.
Symbol
Parameter
Min
Typ
Max
Unit
Test Conditions
Note 1:
Input voltages may exceed supply voltages, provided input current is limited to ±400
μA. Currents above
this value may result in invalid display readings, but will not destroy the device if limited to ±1 mA.
Dissipation ratings assume device is mounted with all leads soldered to printed circuit board.
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