TC7116 View Datasheet(PDF) - TelCom Semiconductor Inc => Microchip
Part Name
Description
Manufacturer
TC7116 Datasheet PDF : 14 Pages
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3-1/2 DIGIT ANALOG-TO-DIGITAL
CONVERTERS WITH HOLD
PIN DESCRIPTION
40-Pin PDIP/
40-PinCerDIP
Pin Number
Normal
1
2
3
4
5
6
7
8
10
11
12
13
14
15
16
17
18
19
20
21
44-Pin
Plastic Quad
Flat Package
Pin Number
8
9
10
11
12
13
14
15
9
17
18
19
20
21
22
23
24
25
26
27
28
22
29
23
30
24
31
25
32
26
34
27
35
28
36
29
37
30
38
31
39
39
40
Symbol
HLDR
D1
C1
B1
A1
F1
G1
E1
16
C2
B2
A2
F2
E2
D3
B3
F3
E3
AB4
POL
BP
GND
G3
A3
C3
G2
V–
VINT
VBUFF
CAZ
VI–N
V+IN
COMMON
TELCOM SEMICONDUCTOR, INC.
1 TC7116
TC7116A
TC7117
TC7117A
2
Description
Hold pin, Logic 1 holds present display reading.
Activates the D section of the units display.
Activates the C section of the units display.
Activates the B section of the units display.
Activates the A section of the units display.
Activates the F section of the units display.
Activates the G section of the units display.
Activates the E section of the units display.
D2 Activates the D section of the tens display.
Activates the C section of the tens display.
Activates the B section of the tens display.
Activates the A section of the tens display.
Activates the F section of the tens display.
Activates the E section of the tens display.
Activates the D section of the hundreds display.
Activates the B section of the hundreds display.
Activates the F section of the hundreds display.
Activates the E section of the hundreds display.
Activates both halves of the 1 in the thousands display.
Activates the negative polarity display.
LCD backplane drive output (TC7116/TC7116A).
Digital ground (TC7117/TC7117A).
Activates the G section of the hundreds display.
Activates the A section of the hundreds display.
Activates the C section of the hundreds display.
Activates the G section of the tens display.
Negative power supply voltage.
Integrator output. Connection point for integration
capacitor. See Integration Capacitor section for
additional details.
Integration resistor connection. Use a 47 kΩ resis tor for
200 mV full-scale range and a 470 kΩ resistor for 2V
full-scale range.
The size of the auto-zero capacitor influences system
noise. Use a 0.47 µF capacitor for 200 mV full scale and
a 0.047 µF capacitor for 2V full scale. See Auto-Zero
Capacitor paragraph for more details.
The analog LOW input is connected to this pin.
The analog HIGH input is connected to this pin.
This pin is primarily used to set the analog common-
mode COMMON voltage for battery operation or in
systems where the input signal is referenced to the
power supply. See Analog Common paragraph for more
details. It also acts as a reference voltage source.
3
4
5
6
7
8
3-207
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