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TC7126A датащи(PDF) 5 Page - Microchip Technology

номер детали TC7126A
подробное описание детали  3-1/2 Digit Analog-to-Digital Converters
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производитель  MICROCHIP [Microchip Technology]
домашняя страница  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

TC7126A датащи(HTML) 5 Page - Microchip Technology

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© 2002 Microchip Technology Inc.
DS21458B-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.
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
≤ T
A ≤ +85°C ("I" Device)
(TC7126A)
VC
Analog Common Voltage
2.7
3.05
3.35
V
250k
Ω Between Common and V+
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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