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| 型号： | TC7117CPLG |
| 元件分类： | ADC |
| 英文描述： | 1-CH 22-BIT DUAL-SLOPE ADC, PARALLEL ACCESS, PDIP40 |
| 封装： | PLASTIC, DIP-40 |
| 文件页数： | 19/24页 |
| 文件大小： | 410K |
| 代理商： | TC7117CPLG |
TC7116/A/TC7117/A
DS21457C-page 4
2006 Microchip Technology Inc.
1.0
ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings*
Supply Voltage:
TC7116/TC7116A (V+ to V-) ...........................15V
TC7117/TC7117A (V+ to GND) .......................+6V
V- to GND.........................................................-9V
Analog Input Voltage (Either Input) (Note 1) ... V+ to V-
Reference Input Voltage (Either Input) ............ V+ to V-
Clock Input:
TC7116/TC7116A............................... TEST to V+
TC7117/TC7117A.................................GND to V+
Package Power Dissipation; TA ≤ 70°C (Note 2)
40-Pin CDIP ................................................2.29W
40-Pin PDIP ................................................1.23W
44-Pin PLCC ...............................................1.23W
44-Pin PQFP ...............................................1.00W
Operating Temperature:
C (Commercial) Device ................... 0°C to +70°C
I (Commercial) Device.................... 0°C to +70°C
Storage Temperature..........................-65°C to +150°C
*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 operation sections of the
specifications is not implied. Exposure to Absolute
Maximum Rating conditions for extended periods may
affect device reliability.
TABLE 1-1:
TC7116/A AND TC7117/A ELECTRICAL SPECIFICATIONS
Electrical Characteristics: Unless otherwise noted, specifications apply to both the TC7116/A and TC7117/A at TA = 25°C,
fCLOCK = 48kHz. Parts are tested in the circuit of the Typical Operating Circuit.
Symbol
Parameter
Min
Typ
Max
Unit
Test Conditions
ZIR
Zero Input Reading
—
±0
—
Digital
Reading
VIN = 0V
Full Scale = 200mV
Ratiometric Reading
999
999/1000
1000
Digital
Reading
VIN = VREF
VREF = 100mV
R/O
Rollover Error (Difference in Reading
for Equal Positive and Negative
Readings Near Full Scale)
-1
±0.2
+1
Counts
VIN- = + VIN+ 200mV
or
≈ 2V
Linearity (Maximum Deviation from
Best Straight Line Fit)
-1
±0.2
+1
Counts
Full Scale = 200mV or 2V
CMRR
Common Mode Rejection Ratio
(Note 3)
—50
—
μV/V
VCM = ±1V, VIN = 0V
Full Scale = 200mV
eN
Noise (Peak to Peak 95% of Time)
—
15
—
μVVIN = 0V
Full Scale = 200mV
IL
Leakage Current at Input
—
1
10
pA
VIN = 0V
Zero Reading Drift
—
0.2
1
μV/°C
VIN = 0V
“C” Device = 0°C to +70°C
—1.0
2
μV/°C
“I” Device = -25°C to +85°C
Note
1:
Input voltages may exceed the supply voltages provided the input current is limited to ±100
μA.
2: Dissipation rating assumes device is mounted with all leads soldered to printed circuit board.
3: Refer to “Differential Input” discussion.
4: Backplane drive is in phase with segment drive for “OFF” segment, 180° out of phase for “ON” segment. Frequency is
20 times conversion rate. Average DC component is less than 50mV.
5: The TC7116/TC7116A logic inputs have an internal pull-down resistor connected from HLDR, Pin 1 to TEST, Pin 37. The
TC7117/TC7117A logic inputs have an internal pull-down resistor connected from HLDR, Pin 1 to GND, Pin 21.
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