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Intersil Electronic Components Datasheet

ICL8068A Datasheet

A/D Converter

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ICL8068A pdf
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itle
L80
AA/
L71
3,
L80
A/IC
1C0
bjec
ecis
Precision 41/2 Digit, A/D Converter
The ICL8052A or ICL8068A/lCL71C03 chip pairs with their
multiplexed BCD output and digit drivers are ideally suited
for the visual display DVM/DPM market. The outstanding
41/2 digit accuracy, 200.00mV to 2.0000V full scale
capability, auto-zero and auto-polarity combine with true
ratiometric operation, almost ideal differential linearity and
time-proven dual slope conversion. Use of these chip pairs
eliminates clock feedthrough problems, and avoids the
critical board layout usually required to minimize charge
injection.
When only 2000 counts of resolution are required, the 71C03
can be wired for 31/2 digits and give up to 30 readings/sec.,
making it ideally suited for a wide variety of applications.
/2
git,
D
nver
)
utho
)
eyw
s
tersi
The ICL71C03 is an improved CMOS plug-in replacement for
the lCL7103 and should be used in all new designs.
Part Number Information
PART NUMBER
lCL8052ACPD
ICL8068ACDD
lCL8068ACJD
TEMP.
RANGE (oC)
PACKAGE
0 to 70 14 Ld PDIP
0 to 70 14 Ld CERDIP
0 to 70 14 Ld CERDIP
lCL71C03ACPl
0 to 70 28 Ld PDIP
PKG.
NO.
E14.3
F14.3
F14.3
E28.6
rpor Pinouts
on,
alog
ICL8052A/ICL8068A
(CERDIP, PDIP)
TOP VIEW
gital
nver
,
D,
crop
esso
erfa
ta
quis
V- 1
COMP OUT 2
14 INT OUT
-1.2V
13 +BUFF IN
REF CAP 3
12 +INT IN
REF BYPASS 4
GND 5 VREF
11 -INT IN
10 -BUFF IN
REF OUT 6
REF SUPPLY 7
9 BUFF OUT
ICL8052A/
ICL8068A
8
V+
ICL8052A/ICL71C03,
ICL8068A/ICL71C03
May 2001
File Number 3081.2
Features
• Typically Less Than 2µVP-P Noise (200.00mV Full Scale,
lCL8068A
• Accuracy Guaranteed to ±1 Count Over Entire ±20,000
Counts (2.0000V Full Scale)
• Guaranteed Zero Reading for 0V Input
• True Polarity at Zero Count for Precise Null Detection
• Single Reference Voltage Required
• Over-Range and Under-Range Signals Available for Auto-
Ranging Capability
• All Outputs TTL Compatible
• Medium Quality Reference, 40ppm (Typ) on Board
• Blinking Display Gives Visual Indication of Over Range
• Six Auxiliary Inputs/Outputs are Available for Interfacing to
UARTs, Microprocessors or Other Complex Circuitry
• 5pA Input Current (Typ) (8052A)
ICL71C03 (PDIP)
TOP VIEW
V+ 1
41/2 / 31/2 2
POL 3
RUN/HOLD 4
COMP IN 5
V- 6
REFERENCE 7
REF. CAP. 1 8
REF. CAP. 2 9
ANALOG IN 10
ANALOG GND 11
CLOCK IN 12
UNDER-RANGE 13
OVER-RANGE 14
28 BUSY
27 D1 (LSD)
26 D2
25 D3
24 D4
23 B8 (MSB)
22 B4
21 B2
20 B1 (LSB)
19 D5 (MSD)
18 STROBE
17 A-Z IN
16 A-Z OUT
15 DIGITAL GND
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Intersil and Design is a trademark of Intersil Americas Inc. | Copyright © Intersil Americas Inc. 2001
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Intersil Electronic Components Datasheet

ICL8068A Datasheet

A/D Converter

No Preview Available !

ICL8068A pdf
ICL8052A/ICL71C03, ICL8068A/ICL71C03
Functional Block Diagram
10k
90k
100k0.22µF
+15V -15V
-BUF IN BUF OUT -INT IN INT OUT
10k
10µF
REF
OUT
87
6
INT.
3 REF.
300pF
1k5
1 10
9
11
14
BUFFER
INTEG.
COMP.
--
A1 A2 -
+ + A3
ICL8052A/8068A
+
-1.2V
+BUF IN 13 +INT IN 12
2
10µF (TYP)
COMP
1µF (TYP) OUT
REF
CAP 1
REF
CAP 2
AZ OUT
AZ IN COMP IN
REF
ANALOG
INPUT
7
4
10k
0.1µF
10
8
5
1
9
2
6
16
SW3
17 5
ZERO
CROSSING
DETECTOR
ANALOG
GND
11
ICL71C03
1 15 6
4
RUN/
+5V
-15V
HOLD
SEVEN-
SEGMENT
DECODER
D5
3 19
MSD
D4 D3 D2
24 25 26
MULTIPLEXER
D1
27
LSD
20 B1
21 B2
22 B3
23 B4
LATCH
LATCH
LATCH
LATCH
LATCH
COUNTERS
CONTROL LOGIC
12 2
14 13
18 28
CLOCK 4 1/2 DIGIT/ OVER UNDER STROBE BUSY
IN 3 1/2 DIGIT RANGE RANGE
FIGURE 1.
2
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Intersil Electronic Components Datasheet

ICL8068A Datasheet

A/D Converter

No Preview Available !

ICL8068A pdf
ICL8052A/ICL71C03, ICL8068A/ICL71C03
Absolute Maximum Ratings
ICL8052A, ICL8068A
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±18V
Differential Input Voltage
(8068A). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±30V
(8052A). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±6V
Input Voltage (Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±15V
Output Short Circuit Duration All Outputs (Note 2) . . . . . . Indefinite
ICL71C03
Power Supply Voltage (GND to V+). . . . . . . . . . . . . . . . . . . . . . 6.5V
Negative Supply Voltage (GND to V-) . . . . . . . . . . . . . . . . . . . . -17V
Analog Input Voltage (Note 3) . . . . . . . . . . . . . . . . . . . . . . . V+ to V-
Digital Input Voltage (Note 4) . . . . . . . . .(GND - 0.3V) to (V+ + 0.3V)
Thermal Information
Thermal Resistance (Typical, Note 5) θJA (oC/W)
θJC (oC/W)
CERDIP Package. . . . . . . . . . . . . . . . .
75
20
14 Ld PDIP Package . . . . . . . . . . . . . . 100
N/A
28 Ld PDIP Package . . . . . . . . . . . . . .
65
N/A
Maximum Storage Temperature. . . . . . . . . . . . . . . . -65oC to 150oC
Maximum Lead Temperature (Soldering, 10s). . . . . . . . . . . . . 300oC
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. θJA is measured with the component mounted on a low effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
2. For supply voltages less than ±15V, the absolute maximum input voltage is equal to the supply voltage.
3. Short circuit may be to ground or either supply. Rating applies to 70oC ambient temperature.
4. Input voltages may exceed the supply voltages provided the input current is limited to ±100µA.
5. Connecting any digital inputs or outputs to voltages greater then V+ or less than GND may cause destructive device latchup. For this reason it
is recommended that the power supply to the ICL71C03 be established before any inputs from sources not on that supply are applied.
6. θJA is measured with the component mounted on an evaluation PC board in free air.
Electrical Specifications
PARAMETER
SYMBOL
TEST
CONDITIONS
MIN
TYP
MAX
UNITS
Clock In, Run/Hold, 4 1/2 / 3 1/2
Comp. In Current
Threshold Voltage
All Outputs
B1, B2, B4, B8 , D1 , D2 , D3 , D4 , D5
Busy, Strobe, Over-Range, Under-Range Polarity
Switches 1, 3, 4, 5, 6
Switch 2
Switch Leakage (All)
+5V Supply Range
IINL
IINH
IINL
IINH
VINTH
VOL
VOH
VOH
rDS(ON)
rDS(ON)
ID(OFF)
V+
VIN = 0
VIN = +5V
VIN = 0
VIN = +5V
IOL = 1.6mA
IOH = -1mA
IOH = -10µA
- 0.2 0.6
- 0.1 10
- 0.1 10
- 0.1 10
- 2.5 -
-
0.25
0.40
2.4 4.2
-
4.9 4.99
-
- 400 -
- 1200 -
-2-
456
mA
µA
µA
µA
V
V
V
V
pA
V
-15V Supply Range
V-
-5 -15 -18
V
+5V Supply Current
-15V Supply Current
Power Dissipation Capacitance
Clock Frequency (Note 6)
I+
I-
CPD
fCLK = 0
fCLK = 0
vs Clock Frequency
- 1.1 3
- 0.8 3
- 40 -
DC 2000 1200
mA
mA
pF
kHz
NOTE:
7. This specification relates to the clock frequency range over which the ICL71C03A will correctly perform its various functions. See the “Max Clock
Frequency” section under Component Value Selection for limitations on the clock frequency range in a system.
3
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Part Number ICL8068A
Description A/D Converter
Maker Intersil
Total Page 23 Pages
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