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TC7106ACKW713

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P34
© 2008 Microchip Technology Inc. DS21455D-page 1
TC7106/A/TC7107/A
Features:
• Internal Reference with Low Temperature Drift:
- TC7106/TC7107: 80 ppm/°C (Typical)
- TC7106A/TC7107A: 20 ppm/°C (Typical)
• Drives LCD (TC7106) or LED (TC7107)
Display Directly
• Zero Reading with Zero Input
• Low Noise for Stable Display
• Auto-Zero Cycle Eliminates Need for Zero
Adjustment
• True Polarity Indication for Precision Null
Applications
• Convenient 9V Battery Operation (TC7106A)
• High-Impedance CMOS Differential Inputs: 10
12
Ω
• Differential Reference Inputs Simplify Ratiometric
Measurements
• Low-Power Operation: 10 mW
Applications:
• Thermometry
• Bridge Readouts: Strain Gauges, Load Cells, Null
Detectors
• Digital Meters: Voltage/Current/Ohms/Power, pH
• Digital Scales, Process Monitors
• Portable Instrumentation
General Description:
The TC7106A and TC7107A 3-1/2 digit direct display
drive Analog-to-Digital Converters allow existing
TC7106/TC7107 based systems to be upgraded. Each
device has a precision reference with a 20 ppm/°C
maximum temperature coefficient. This represents a 4
to 7 times improvement over similar 3-1/2 digit
converters. Existing TC7106 and TC7107 based
systems may be upgraded without changing external
passive component values. The TC7107A drives
common anode light emitting diode (LED) displays
directly with 8 mA per segment. A low cost, high
resolution indicating meter requires only a display, four
resistors, and four capacitors. The TC7106A low-power
drain and 9V battery operation make it suitable for por-
table applications.
The TC7106A/TC7107A reduces linearity error to less
than 1 count. Rollover error – the difference in readings
for equal magnitude, but opposite polarity input signals,
is below ±1 count. High-impedance differential inputs
offer 1 pA leakage current and a 10
12
Ω input
impedance. The differential reference input allows
ratiometric measurements for ohms or bridge
transducer measurements. The 15 µV
P–P
noise
performance ensures a “rock solid” reading. The auto-
zero cycle ensures a zero display reading with a zero
volts input.
3-1/2 Digit Analog-to-Digital Converters
TC7106/A/TC7107/A
DS21455D-page 2 © 2008 Microchip Technology Inc.
Package Type
TC7106ACPL
TC7107AIPL
1
2
3
4
OSC1
5
6
7
8
9
10
11
12
TEST
V
REF
+
ANALOG
COMMON
C
AZ
V+
D
2
Normal Pin
Configuration
13
14
15
16
17
18
19
20
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
C
2
B
2
A
2
F
2
E
2
D
3
B
3
F
3
E
3
AB
4
(Minus Sign)
10s
'
100s
'
1000s
'
(7106A/7107A)
100s
'
OSC2
OSC3
V
REF
-
C
REF
-
C
REF
-
V
IN
+
V
IN
-
V
BUFF
V
INT
V-
G
2
C
3
A
3
G
3
BP/GND
POL
D
1
C
1
B
1
A
1
F
1
G
1
E
1
1s
'
27
26
25
24
23
7
8
9
10
11
NC
G
2
NC
NC
TEST
OSC3
NC
OSC2
OSC1
V+
D
1
C
1
B
1
12 13 14 15 16 17 18 19 20 21 22
38 37 36 35 34
REF HI
A
1
F
1
TC7106ACKW
TC7107ACKW
394041424344
28
29
30
31
32
33
6
5
4
3
2
1
REF LO
C
REF
C
REF
COM
IN HI
IN LO
A/Z
BUFF
INT
V-
G
1
E
1
D
1
C
1
B
2
A
2
F
2
E
2
D
3
C
3
A
3
G
3
BP/GND
POL
AB
4
E
3
F
3
B
3
33
32
31
30
29
13
14
15
16
17
REF LO
C
REF
F
1
G
1
E
1
D
2
C
2
B
2
A
2
F
2
E
2
D
2
18 19 20 21 22 23 24 25 26 27 28
44 43 42 41 40
A
1
B
3
F
3
TC7106ACLW
TC7107ACLW
123456
34
35
36
37
38
39
12
11
10
9
8
7
B
1
C
1
D
1
V
+
NC
OSC1
OSC2
OSC3
TEST
REF
HI
E
3
AB
4
POL
NC
BP/GND
G
3
A
3
C
3
G
2
C
REF
COMMON
IN HI
NC
IN LO
A/Z
BUFF
INT
V-
40-Pin PDIP 44-Pin PLCC
44-Pin MQFP
© 2008 Microchip Technology Inc. DS21455D-page 3
TC7106/A/TC7107/A
Typical Application
V
REF
+
TC7106/A
TC7107/A
9V
V
REF
33
34
24 k
Ω
1kΩ
29
36
39 38
40
0.47 µF
0.1 µF
V-
OSC1OSC3
OSC2
To Analog
Common (Pin 32)
3 Conversions/Sec
200 mV Full Scale
C
OSC
100 kΩ
47 kΩ
0.22 µF
C
REF
-C
REF
+
V
IN
+
V
IN
-
ANALOG
COMMON
V
INT
V
BUFF
C
AZ
20
21
Segment
Drive
2 - 19
22 - 25
POL
BP
V+
Minus Sign
Backplane
Drive
28
R
OSC
100 pF
LCD Display (TC7106/A) or
Common Node with LED
Display (TC7107/A)
27
100 mV
1
26
35
V
REF
-
+
31
0.01 µF
Analog
Input
+
–
1MΩ
30
32
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P34

TC7106ACKW713

Mfr. #:
Buy TC7106ACKW713
Manufacturer:
Microchip Technology
Description:
LCD Drivers w/LCD Driver
Lifecycle:
New from this manufacturer.
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