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TC7117CKW Fiches technique(PDF) 5 Page - Microchip Technology

No de pièce TC7117CKW
Description  3-1/2 Digit Analog-to-Digital Converters with Hold
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Fabricant  MICROCHIP [Microchip Technology]
Site Internet  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

TC7117CKW Fiches technique(HTML) 5 Page - Microchip Technology

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© 2002 Microchip Technology Inc.
DS21457B-page 5
TC7116/A/TC7117/A
TCSF
Scale Factor Temperature Coefficient
1
5
ppm/°C
VIN =199mV,
“C” Device = 0°C to +70°C
(Ext. Ref = 0ppm°C)
20
ppm/°C
“I” Device = -25°C to +85°C
Input Resistance, Pin 1
30
70
k
(Note 5)
VIL, Pin 1
Test + 1.5
V
TC7116/A Only
VIL, Pin 1
GND + 1.5
V
TC7117/A Only
VIH, Pin 1
V
+ - 1.5
V
Both
IDD
Supply Current (Does not Include LED
Current for TC7117/A)
—0.8
1.8
mA
VIN =0V
VC
Analog Common Voltage
(with Respect to Positive Supply)
2.4
3.05
3.35
V
25k
Ω Between Common
and Positive Supply
VCTC
Temperature Coefficient of Analog
Common (with Respect to Positive
Supply)
——
20
80
50
ppm/°C
ppm/°C
“C” Device: 0°C to +70°C
TC7116A/TC7117A
TC7116/TC7117
VSD
TC7116/TC7117A ONLY Peak to Peak
Segment Drive Voltage
45
6
V
V+ to V- = 9V
(Note 4)
VBD
TC7116A/TC7116A ONLY Peak to Peak
Backplane Drive Voltage
45
6
V
V+ to V- = 9V
(Note 4)
TC7117/TC7117A ONLY
Segment Sinking Current
(Except Pin 19)
5
8
mA
V+=5.0V
Segment Voltage = 3V
TC7117/TC7117A ONLY
Segment Sinking Current (Pin 19 Only)
10
16
mA
V+=5.0V
Segment Voltage = 3V
TC7116/A AND TC7117/A ELECTRICAL SPECIFICATIONS (CONTINUED)
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
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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