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參數(shù)資料
| 型號(hào)： | TC7126ACPL |
| 元件分類： | ADC |
| 英文描述： | 1-CH DUAL-SLOPE ADC, PARALLEL ACCESS, PDIP40 |
| 封裝： | PLASTIC, DIP-40 |
| 文件頁數(shù)： | 22/26頁 |
| 文件大?。?/td> | 413K |
| 代理商： | TC7126ACPL |
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2006 Microchip Technology Inc.
DS21458C-page 5
TC7126/A
1.0
ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings*
Supply Voltage (V+ to V-) ....................................... 15V
Analog Input Voltage (either Input) (Note 1) ... V+ to V-
Reference Input Voltage (either Input) ............ V+ to V-
Clock Input ................................................... Test to V+
Package Power Dissipation (TA ≤ 70°C) (Note 2):
44-Pin PQFP............................................... 1.00W
40-Pin PLCC ............................................... 1.23W
44-Pin PDIP ................................................ 1.23W
Operating Temperature Range:
C (Commercial) Devices .................. 0°C to +70°C
I (Industrial) Devices .................... -25°C to +85°C
Storage Temperature Range .............. -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:
TC7126/A ELECTRICAL SPECIFICATIONS
Electrical Characteristics: VS = +9V, fCLK – 16kHz, and TA = +25°C, unless otherwise noted.
Symbol
Parameter
Min
Typ
Max
Unit
Test Conditions
Input
ZIR
Zero Input Reading
-000.0
±000.0
+000.0
Digital
Reading
VIN = 0V
Full Scale = 200mV
ZRD
Zero Reading Drift
—
0.2
1
μV/°C
VIN = 0V, 0°C ≤ TA ≤ +70°C
Ratiometric Reading
999
999/1000
1000
Digital
Reading
VIN = VREF, VREF = 100mV
NL
Linearity Error
-1
±0.2
1
Count
Full Scale = 200mV or 2V
Max Deviation From Best Fit
Straight Line
Rollover Error
-1
±0.2
1
Count
VIN- = VIN+ ≈ 200mV
eN
Noise
—
15
—
μVP-P
VIN = 0V, Full Scale = 200mV
IL
Input Leakage Current
—
1
10
pA
VIN = 0V
CMRR
Common Mode Rejection Ratio
—
50
—
μV/V
VCM = ±1V, VIN = 0V
Full Scale = 200mV
Scale Factor Temperature
Coefficient
—
1
5
ppm/°C
VIN = 199mV, 0°C ≤ TA ≤ +70°C
Ext. Ref. Temp Coeff. = 0ppm/°C
Analog Common
VCTC
Analog Common Temperature
Coefficient
—
250k
Ω Between Common and V+
——
—
0°C
≤ TA ≤ +70°C (“C” Devices)
—
80
—
ppm/°C
TC7126
—
35
75
ppm/°C
TC7126A
—
35
100
ppm/°C
-25°C
≤ TA ≤ +85°C (“I” Device)
(TC7126A)
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: See “Typical Application”.
6: During Auto-Zero phase, current is 10-20
μA higher. A 48kHz ocillator increases current by 8μA (Typical). Common
current is not included.
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