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PDF ICL7117CPL Data sheet ( Hoja de datos )
| Número de pieza | ICL7117CPL | |
| Descripción | 31/2 Digit/ LCD/LED Display/ A/D Converter with Display Hold | |
| Fabricantes | Intersil | |
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ICL7116, ICL7117
January 1998
31/2 Digit, LCD/LED Display,
A/D Converter with Display Hold
Features
• HOLD Reading Input Allows Indefinite Display Hold
• Guaranteed Zero Reading for 0V Input
• True Polarity at Zero for Precise Null Detection
• 1pA Typical Input Current
• Direct Display Drive
- LCD ICL7116
- LED lCL7117
• Low Noise - Less Than 15µVP-P (Typ)
• On Chip Clock and Reference
• Low Power Dissipation - Typically Less Than 10mW
• No Additional Active Circuits Required
• Surface Mount Package Available
Ordering Information
PART NUMBER
ICL7116CPL
ICL7116CM44
ICL7117CPL
TEMP.
RANGE (oC) PACKAGE
0 to 70 40 Ld PDIP
0 to 70 44 Ld MQFP
0 to 70 40 Ld PDIP
PKG. NO.
E40.6
Q44.10x10
E40.6
Description
The Intersil ICL7116 and ICL7117 are high performance, low
power, 31/2 digit, A/D converters. Included are seven segment
decoders, display drivers, a reference, and a clock. The
ICL7116 is designed to interface with a liquid crystal display
(LCD) and includes a multiplexed backplane drive. The
ICL7117 will directly drive an instrument size, light emitting
diode (LED) display.
The ICL7116 and ICL7117 have all of the features of the
ICL7106 and ICL7107 with the addition of a HOLD Reading
input. With this input, it is possible to make a measurement
and retain the value on the display indefinitely. To make room
for this feature the reference low input has been connected
to Common internally rather than being fully differential.
These circuits retain the accuracy, versatility, and true econ-
omy of the ICL7106 and ICL7107. They feature auto-zero to
less than 10µV, zero drift of less than 1µV/oC, input bias cur-
rent of 10pA maximum, and roll over error of less than one
count. The versatility of true differential input is of particular
advantage when measuring load cells, strain gauges and
other bridge-type transducers. And finally, the true economy
of single power supply operation (ICL7116) enables a high
performance panel meter to be built with the addition of only
eleven passive components and a display.
Pinouts
ICL7116, ICL7117 (PDIP)
TOP VIEW
HLDR
D1
C1
B1
(1’s) A1
F1
G1
E1
D2
C2
B2
(10’s)
A2
F2
E2
D3
B3
(100’s)
F3
E3
(1000) AB4
(MINUS) POL
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
40 OSC 1
39 OSC 2
38 OSC 3
37 TEST
36 REF HI
35 V+
34 CREF+
33 CREF-
32 COMMON
31 IN HI
30 IN LO
29 A-Z
28 BUFF
27 INT
26 V-
25 G2 (10’s)
24 C3
23 A3 (100’s)
22 G3
21 BP/GND
ICL7116 (MQFP)
TOP VIEW
NC
NC
TEST
OSC 3
NC
OSC 2
OSC 1
HLDR
D1
C1
B1
44 43 42 41 40 39 38 37 36 35 34
1 33
2 32
3 31
4 30
5 29
6 28
7 27
8 26
9 25
10 24
11 23
12 13 14 15 16 17 18 19 20 21 22
NC
G2
C3
A3
G3
BP
POL
AB4
E3
F3
B3
A1 F1 G1 E1 D2 C2 B2 A2 F2 E2 D3
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
http://www.intersil.com or 407-727-9207 | Copyright © Intersil Corporation 1999
1
File Number 3083.2
1 page  
ICL7116, ICL7117
Pin Descriptions
PIN NUMBER
44 PIN
40 PIN DIP FLATPACK
18
29
3 10
4 11
5 12
6 13
7 14
8 15
9 16
10 17
11 18
12 19
13 20
14 21
15 22
16 23
17 24
18 25
19 26
20 27
21 28
22 29
23 30
24 31
25 32
26 34
27 35
28 36
29 37
30 38
31 39
32 40
33 41
34 42
35 43
36 44
37 3
38 4
39 6
40 7
NAME
HLDR
D1
C1
B1
A1
F1
G1
E1
D2
C2
B2
A2
F2
E2
D3
B3
F3
E3
AB4
POL
BP/GND
G3
A3
C3
G2
V-
INT
BUFF
A-Z
IN LO
IN HI
COMMON
CREF -
CREF+
V+
REF HI
TEST
OSC3
OSC2
OSC1
FUNCTION
Input
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Supply
Output
Output
Input
Input
Supply/
Output
Supply
Input
Output
Output
Input
DESCRIPTION
Display Hold Control.
Driver Pin for Segment “D” of the display units digit.
Driver Pin for Segment “C” of the display units digit.
Driver Pin for Segment “B” of the display units digit.
Driver Pin for Segment “A” of the display units digit.
Driver Pin for Segment “F” of the display units digit.
Driver Pin for Segment “G” of the display units digit.
Driver Pin for Segment “E” of the display units digit.
Driver Pin for Segment “D” of the display tens digit.
Driver Pin for Segment “C” of the display tens digit.
Driver Pin for Segment “B” of the display tens digit.
Driver Pin for Segment “A” of the display tens digit.
Driver Pin for Segment “F” of the display tens digit.
Driver Pin for Segment “E” of the display tens digit.
Driver pin for segment “D” of the display hundreds digit.
Driver pin for segment “B” of the display hundreds digit.
Driver pin for segment “F” of the display hundreds digit.
Driver pin for segment “E” of the display hundreds digit.
Driver pin for both “A” and “B” segments of the display thousands digit.
Driver pin for the negative sign of the display.
Driver pin for the LCD backplane/Power Supply Ground.
Driver pin for segment “G” of the display hundreds digit.
Driver pin for segment “A” of the display hundreds digit.
Driver pin for segment “C” of the display hundreds digit.
Driver pin for segment “G” of the display tens digit.
Negative power supply.
Integrator amplifier output. To be connected to integrating capacitor.
Input buffer amplifier output. To be connected to integrating resistor.
Integrator amplifier input. To be connected to auto-zero capacitor.
Differential inputs. To be connected to input voltage to be measured. LO and HI
designators are for reference and do not imply that LO should be connected to
lower potential, e.g., for negative inputs IN LO has a higher potential than IN HI.
Internal voltage reference output.
Connection pins for reference capacitor.
Power Supply.
Display test. Turns on all segments when tied to V+.
Device clock generator circuit connection pins.
5
5 Page 
ICL7116, ICL7117
Typical Applications
Application Notes
The ICL7116 and ICL7117 may be used in a wide variety of
configurations. The circuits which follow show some of the
possibilities, and serve to illustrate the exceptional versatil-
ity of these A/D converters.
The following application notes contain very useful
information on understanding and applying this part and
are available from Intersil Corporation.
NOTE #
DESCRIPTION
AN016 “Selecting A/D Converters”
AN017 “The Integrating A/D Converter”
AN018 “Do’s and Don’ts of Applying A/D
Converters”
AnswerFAX
DOC. #
9016
9017
9018
AN023 “Low Cost Digital Panel Meter Designs”
9023
AN032 “Understanding the Auto-Zero and
Common Mode Performance of the
ICL7136/7/9 Family”
9032
AN046 “Building a Battery-Operated Auto
Ranging DVM with the ICL7106”
9046
AN047 “Games People Play with Intersil’ A/D
Converters,” edited by Peter Bradshaw
AN052 “Tips for Using Single Chip 31/2 Digit A/D
Converters”
9047
9052
Typical Applications
OSC 1 40
OSC 2 39
OSC 3 38
TEST 37
REF HI 36
V+ 35
CREF 34
CREF 33
COMMON 32
IN HI 31
IN LO 30
A-Z 29
BUFF 28
INT 27
V - 26
G2 25
C3 24
A3 23
G3 22
BP 21
100kΩ
100pF
SET VREF
= 100mV
1kΩ 22kΩ
0.1µF
0.47µF
47kΩ
1MΩ
0.01µF
0.22µF
+
IN
-
+
9V
-
TO DISPLAY
TO BACKPLANE
OSC 1 40
OSC 2 39
OSC 3 38
TEST 37
REF HI 36
V+ 35
CREF 34
CREF 33
COMMON 32
IN HI 31
IN LO 30
A-Z 29
BUFF 28
INT 27
V - 26
G2 25
C3 24
A3 23
G3 22
GND 21
100kΩ
100pF
SET VREF
= 100mV
1kΩ 22kΩ
0.1µF
0.47µF
47kΩ
1MΩ
0.01µF
0.22µF
TO DISPLAY
+5V
+
IN
-
-5V
Values shown are for 200mV full scale, 3 readings/sec., floating
supply voltage (9V battery).
Values shown are for 200mV full scale, 3 readings/sec. IN LO may
be tied to either COMMON for inputs floating with respect to
supplies, or GND for single ended inputs. (See discussion under
Analog COMMON.)
FIGURE 11. ICL7116 USING THE INTERNAL REFERENCE
FIGURE 12. ICL7117 USING THE INTERNAL REFERENCE
11
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet ICL7117CPL.PDF ] | |
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