參數(shù)資料
型號: TC7109CKWR
元件分類: ADC
英文描述: 1-CH 12-BIT DUAL-SLOPE ADC, PARALLEL ACCESS, PQFP44
封裝: PLASTIC, QFP-44
文件頁數(shù): 24/28頁
文件大?。?/td> 598K
代理商: TC7109CKWR
2002 Microchip Technology Inc.
DS21456B-page 5
TC7109/A
I+
Supply Current (V+ to GND)
700
1500
AV
IN = 0V, Crystal Oscillator
3.58MHz Test Circuit
IS
Supply Current (V+ to V-)
700
1500
A
Pins 2-21, 25, 26, 27, 29 Open
VREF
Reference Out Voltage
-2.4
-2.8
-3.2
V
Referenced to V+, 25k
Between V+ and Ref Out
TCREF
Ref Out Temperature Coefficient
80
ppm/°C
25k
Between V+ and Ref Out
0°C
≤ T
A ≤ +70°C
Digital
VOH
Output High Voltage
IOUT =700A
3.5
4.3
V
TC7109: IOUT =100A
Pins 3 -16, 18, 19, 20
TC7109A: IOUT =700A
VOL
Output Low Voltage
0.2
0.4
AIOUT =1.6mA
Output Leakage Current
±0.01
±1
A
Pins 3 -16 High Impedance
Control I/O Pull-up Current
5
F
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
A
Pins 26, 27; VOUT =V+ – 3V
Pins 17, 24; VOUT =V+– 3V
Input Pull-down Current
1
APins 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
A.
2:
Connecting any digital inputs or outputs to voltages greater than V+ or less than GND may cause destructive device
latchup. 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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