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Intersil Electronic Components Datasheet



ICL7117CPL

31/2 Digit/ LCD/LED Display/ A/D Converter with Display Hold



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ICL7117CPL pdf
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



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ICL7116, ICL7117
Absolute Maximum Ratings
Supply Voltage
ICL7116, V+ to V- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15V
ICL7117, V+ to GND. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6V
ICL7117, V- to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-9V
Analog Input Voltage (Either Input) (Note 1). . . . . . . . . . . . . V+ to V-
Reference Input Voltage (Either Input) . . . . . . . . . . . . . . . . . V+ to V-
Clock Input
ICL7116 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TEST to V+
ICL7117 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND to V+
Thermal Information
Thermal Resistance (Typical, Note 2)
θJA (oC/W)
PDIP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
50
MQFP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . .
80
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . 150oC
Maximum Storage Temperature Range . . . . . . . . . .-65oC to 150oC
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . . 300oC
(MQFP - Lead Tips Only)
Operating Conditions
Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . .0oC to 70oC
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation
of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTES:
1. Input voltages may exceed the supply voltages provided the input current is limited to ±100µA.
2. θJA is measured with the component mounted on an evaluation PC board in free air.
Electrical Specifications (Note 3) TA = 25oC, fCLOCK = 48kHz, VREF = 100mV
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNITS
SYSTEM PERFORMANCE
Zero Input Reading
VIN = 0V, Full Scale = 200mV
-000.0 ±000.0 +000.0 Digital
Reading
Ratiometric Reading
VlN = VREF, VREF = 100mV
999 999/ 1000 Digital
1000
Reading
Rollover Error
-VIN = +VlN 195mV Difference in Reading for Equal
Positive and Negative Inputs Near Full Scale
-
±0.2 ±1 Counts
Linearity
Full Scale = 200mV or Full Scale = 2V Maximum
Deviation from Best Straight Line Fit (Note 5)
- ±0.2 ±1 Counts
Common Mode Rejection Ratio
Noise
VCM = ±1V, VIN = 0V, Full Scale = 200mV (Note 5)
- 50 - µV/V
VIN = 0V, Full Scale = 200mV (Peak-To-Peak Value - 15 - µV
Not Exceeded 95% of Time) (Note 5)
Leakage Current Input
Zero Reading Drift
Scale Factor Temperature Coefficient
V+ Supply Current
V- Supply Current
VlN = 0 (Note 5)
VlN = 0, 0oC To 70oC (Note 5)
VIN = 199mV, 0oC To 70oC (Note 5)
VIN = 0 (Does Not Include LED Current for ICL7117)
ICL7117 Only
-
-
-
-
-
1 10 pA
0.2 1 µV/oC
1 5 ppm/oC
1.0 1.8
mA
0.6 1.8 mA
COMMON Pin Analog Common Voltage 25kBetween Common and Positive Supply (With 2.4 3.0 3.2
V
Respect to + Supply)
Temperature Coefficient of Analog Common 25kBetween Common and Positive Supply (With - 80 - ppm/oC
Respect to + Supply) (Note 5)
DISPLAY DRIVER (ICL7116 ONLY)
Peak-To-Peak Segment Drive Voltage
Peak-To-Peak Backplane Drive Voltage
V+ = to V- = 9V, (Note 4)
4 5.5 6
V
DISPLAY DRIVER (ICL7117 ONLY)
Segment Sinking Current
(Except Pins 19 and 20)
V+ = 5V, Segment Voltage = 3V
5 8 - mA
Pin 19 Only
10 16 - mA
Pin 20 Only
4 7 - mA
NOTES:
3. Unless otherwise noted, specifications apply to both the ICL7116 and ICL7117. ICL7116 is tested in the circuit of Figure 1. ICL7117 is
tested in the circuit of Figure 2.
4. Back plane drive is in phase with segment drive for ‘off’ segment, 180 degrees out of phase for ‘on’ segment. Frequency is 20 times con-
version rate. Average DC component is less than 50mV.
5. Not tested, guaranteed by design.
2



Part Number ICL7117CPL
Description 31/2 Digit/ LCD/LED Display/ A/D Converter with Display Hold
Maker Intersil - Intersil
Total Page 14 Pages
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