with Hold. TC7116A Datasheet


TC7116A Hold. Datasheet pdf. Equivalent


TC7116A


3-1/2 Digit Analog-to-Digital Converters with Hold
TC7116/A/TC7117/A

3-1/2 Digit Analog-to-Digital Converters with Hold

Features:
• Low Temperature Drift Internal Reference: - TC7116/TC7117 80 ppm/°C, Typ. - TC7116A/TC7117A 20 ppm/°C, Typ.
• Display Hold Function • Directly Drives LCD or LED Display • Zero Reading with Zero Input • Low Noise for Stable Display:
- 2V or 200mV Full Scale Range (FSR) • Auto-Zero Cycle Eliminates Need for Zero • Adjustment Potentiometer • True Polarity Indication for Precision Null
Applications • Convenient 9V Battery Operation:
(TC7116/TC7116A) • High-Impedance CMOS Differential Inputs: 1012Ω • Low-Power Operation: 10mW

Applications:
• Thermometry • Bridge Readouts: Strain Gauges, Load Cells,
Null Detectors • Digital Meters: Voltage/Current/Ohms/Power, pH • Digital Scales, Process Monitors • Portable Instrumentation

Device Selection Table

Package Code

Package

Temperature Range

CPL IJL CKW CLW

40-Pin PDIP 40-Pin CERDIP
44-Pin PQFP 44-Pin PLCC

0°C to +70°C -25°C to +85°C 0°C to +70°C 0°C to +70°C

General Description:
The TC7116A/TC7117A are 3-1/2 digit CMOS Analogto-Digital Converters (ADCs) containing all the active components necessary to construct a 0.05% resolution measurement system. Seven-segment decoders, polarity and digit drivers, voltage reference, and clock circuit are integrated on-chip. The TC7116A drives Liquid Crystal Displays (LCDs) and includes a backplane driver. The TC7...



TC7116A
TC7116/A/TC7117/A
3-1/2 Digit Analog-to-Digital Converters with Hold
Features:
• Low Temperature Drift Internal Reference:
- TC7116/TC7117 80 ppm/°C, Typ.
- TC7116A/TC7117A 20 ppm/°C, Typ.
• Display Hold Function
• Directly Drives LCD or LED Display
• Zero Reading with Zero Input
• Low Noise for Stable Display:
- 2V or 200mV Full Scale Range (FSR)
• Auto-Zero Cycle Eliminates Need for Zero
• Adjustment Potentiometer
• True Polarity Indication for Precision Null
Applications
• Convenient 9V Battery Operation:
(TC7116/TC7116A)
• High-Impedance CMOS Differential Inputs: 1012Ω
• Low-Power Operation: 10mW
Applications:
• Thermometry
• Bridge Readouts: Strain Gauges, Load Cells,
Null Detectors
• Digital Meters: Voltage/Current/Ohms/Power, pH
• Digital Scales, Process Monitors
• Portable Instrumentation
Device Selection Table
Package Code
Package
Temperature Range
CPL
IJL
CKW
CLW
40-Pin PDIP
40-Pin CERDIP
44-Pin PQFP
44-Pin PLCC
0°C to +70°C
-25°C to +85°C
0°C to +70°C
0°C to +70°C
General Description:
The TC7116A/TC7117A are 3-1/2 digit CMOS Analog-
to-Digital Converters (ADCs) containing all the active
components necessary to construct a 0.05% resolution
measurement system. Seven-segment decoders,
polarity and digit drivers, voltage reference, and clock
circuit are integrated on-chip. The TC7116A drives
Liquid Crystal Displays (LCDs) and includes a back-
plane driver. The TC7117A drives common anode Light
Emitting Diode (LED) displays directly with an 8mA
drive current per segment.
These devices incorporate a display hold (HLDR)
function. The displayed reading remains indefinitely, as
long as HLDR is held high. Conversions continue, but
output data display latches are not updated. The refer-
ence low input (VREF-) is not available, as it is with the
TC7106/7107. VREF- is tied internally to analog
common in the TC7116A/7117A devices.
The TC7116A/7117A 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 1pA leakage current and a 1012Ω input imped-
ance. The 15μVP-P noise performance enables a “rock
solid” reading. The auto-zero cycle ensures a zero
display reading with a 0V input.
The TC7116A and TC7117A feature a precision, low
drift internal reference, and are functionally identical to
the TC7116/TC7117. A low drift external reference is
not normally required with the TC7116A/TC7117A.
© 2006 Microchip Technology Inc.
DS21457C-page 1

TC7116A
TC7116/A/TC7117/A
Package Type
40-Pin PDIP
HLDR 1
40 OSC1
D1 2
39 OSC2
C1 3
38 OSC3
B1 4
1's A1 5
F1 6
37 TEST
36 VREF+
35 V+
G1 7
34 CREF+
E1 8 TC7116CPL 33 CREF-
D2 9 TC7116ACPL 32 COMMON
C2 10 TC7117CPL 31 VIN+
10's B2 11 TC7117ACPL 30 VIN-
A2 12
29 CAZ
100's
F2 13
E2 14
D3 15
B3 16
F3 17
E3 18
28 VBUFF
27 VINT
26 V-
25 G2
24 C3
23 A3
100's
1000's AB4 19
POL 20
(Minus Sign)
22 G3
21 BP/GND
(TC7116/7117)
(TC7116A/TC7117A)
40-Pin CERDIP
HLDR 1
D1 2
C1 3
B1 4
1's A1 5
F1 6
G1 7
E1 8
D2 9
C2 10
10's B2 11
A2 12
F2 13
E2 14
100's
D3 15
B3 16
F3 17
E3 18
1000's AB4 19
POL 20
(Minus Sign)
TC7116IJL
TC7116AIJL
TC7117IJL
TC7117AIJL
40 OSC1
39 OSC2
38 OSC3
37 TEST
36 VREF+
35 V+
34 CREF+
33 CREF-
32 COMMON
31 VIN+
30 VIN-
29 CAZ
28 VBUFF
27 VINT
26 V-
25 G2
24 C3 100's
23 A3
22 G3
21 BP/GND
(TC7116/7117)
(TC7116A/TC7117A)
44-Pin PLCC
44-Pin PQFP
6 5 4 3 2 1 44 43 42 41 40
44 43 42 41 40 39 38 37 36 35 34
F1 7
39 V+
G1 8
38 CREF+
E1 9
37 CREF-
D2 10
36 COMMON
C2 11
NC 12
TC7116CLW
TC7116ACLW
35 VIN+
34 NC
B2 13
A2 14
F2 15
TC7117CLW
TC7117ACLW
33 VIN-
32 CAZ
31 VBUFF
E2 16
30 VINT
D3 17
29 V-
18 19 20 21 22 23 24 25 26 27 28
NC 1
33 NC
NC 2
TEST 3
32 G3
31 C3
OSC3 4
NC 5
OSC2 6
OSC1 7
HLDR 8
D1 9
TC7116CKW
TC7116ACKW
TC7117CKW
TC7117ACKW
30 A3
29 G3
28
BP/
GND
27 POL
26 AB4
25 E3
C1 10
B1 11
24 F3
23 B3
12 13 14 15 16 17 18 19 20 21 22
Note 1:
2:
NC = No internal connection.
Pins 9, 25, 40 and 56 are connected to the die substrate. The potential at these pins is approximately V+. No
external connections should be made.
DS21457C-page 2
© 2006 Microchip Technology Inc.




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