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参数资料
| 型号： | TC7109IJL |
| 元件分类： | ADC |
| 英文描述： | 1-CH 12-BIT DUAL-SLOPE ADC, PARALLEL ACCESS, CDIP40 |
| 封装： | CERAMIC, DIP-40 |
| 文件页数： | 26/30页 |
| 文件大小： | 479K |
| 代理商： | TC7109IJL |
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2006 Microchip Technology Inc.
DS21456C-page 5
TC7109/A
TCFS
Scale Factor Temperature Coefficient
—
1
5
μV/°C
VIN = 408.9mV = >77708
Reading, Ext Ref = 0ppm/°C
I+
Supply Current (V+ to GND)
—
700
1500
μAVIN = 0V, Crystal Oscillator
3.58MHz Test Circuit
IS
Supply Current (V+ to V-)
—
700
1500
μA
Pins 2-21, 25, 26, 27, 29 Open
VREF
Reference Out Voltage
-2.4
-2.8
-3.2
V
Referenced to V+, 25k
Ω
Between V+ and Ref Out
TCREF
Ref Out Temperature Coefficient
—
80
—
ppm/°C
25k
Ω Between V+ and Ref Out
0°C
≤ TA ≤ +70°C
Digital
VOH
Output High Voltage
IOUT = 700μA
3.5
4.3
—
V
TC7109: IOUT = 100μA
Pins 3 -16, 18, 19, 20
TC7109A: IOUT = 700μA
VOL
Output Low Voltage
—
0.2
0.4
μAIOUT = 1.6mA
Output Leakage Current
—
±0.01
±1
μA
Pins 3 -16 High-Impedance
Control I/O Pull-up Current
—
5
—
μF
Pins 18, 19, 20 VOUT = V+ – 3V
Mode Input at GND
Control I/O Loading
—
50
pF
HBEN, Pin 19; LBEN, Pin 18
VIH
Input High Voltage
2.5
—
V
Pins 18 -21, 26, 27
Referenced to GND
VIL
Input Low Voltage
—
1
V
Pins 18-21, 26, 27
Referenced to GND
Input Pull-up Current
—
5
25
—
μA
Pins 26, 27; VOUT = V+ – 3V
Pins 17, 24; VOUT = V+ – 3V
Input Pull-down Current
—
1
—
μA
Pins 21, VOUT = GND = +3V
Oscillator Output Current, High
—
1
—
mA
VOUT – 2.5V
Oscillator Output Current, Low
—
1.5
—
mA
VOUT – 2.5V
Buffered Oscillator Output Current High
—
2
—
mA
VOUT – 2.5V
Buffered Oscillator Output Current Low
—
5
—
mA
VOUT – 2.5V
tW
Mode Input Pulse Width
60
—
nsec
HANDLING PRECAUTIONS: These devices are CMOS and must be handled correctly to prevent damage. Package
and store only in conductive foam, antistatic tubes, or other conducting material. Use proper antistatic handling pro-
cedures. Do not connect in circuits under “power-on” conditions, as high transients may cause permanent damage.
TC7109/TC7109A ELECTRICAL SPECIFICATIONS (Continued)
Electrical Characteristics: All parameters with V+ = +5V, V- = -5V, GND = 0V, TA = +25°C, unless otherwise indicated.
Symbol
Parameter
Min
Typ
Max
Unit
Test Conditions
Note
1:
Input voltages may exceed supply voltages if input current is limited to ±100
μA.
2: Connecting any digital inputs or outputs to voltages greater than V+ or less than GND may cause destructive device
latch-up. Therefore, it is recommended that inputs from sources other than the same power supply should not be applied
to the TC7109A before its power supply is established. In multiple supply systems, the supply to the device should be
activated first.
3: This limit refers to that of the package and will not occur during normal operation.
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