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Intersil Electronic Components Datasheet



ICL7139

(ICL7139 / ICL7149) 33/4 Digit Autoranging Multimeter


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ICL7139 pdf
ICL7139, ICL7149
August 1997
33/4 Digit,
Autoranging Multimeter
Features
Description
• 13 Ranges - ICL7139
The Intersil ICL7139 and ICL7149 are high performance, low
- 4 DC Voltage 400mV, 4V, 40V, 400V
power, auto-ranging digital multimeter lCs. Unlike other
- 1 AC Voltage 400V
autoranging multimeter ICs, the ICL7139 and ICL7149
- 4 DC Current 4mA, 40mA, 400mA, 4A
always display the result of a conversion on the correct
- 4 Resistance 4k, 40k, 400k, 4M
range. There is no “range hunting” noticeable in the display.
• 18 Ranges - ICL7149
- 4 DC Voltage 400mV, 4V, 40V, 400V
- 2 AC Voltage with Optional AC Circuit
m- 4 DC Current 4mA, 40mA, 400mA, 4A
- 4 AC Current with Optional AC Circuit
o- 4 Resistance 4k, 40k, 400k, 4M
.c• Autoranging - First Reading is Always on Correct Range
• On-Chip Duplex LCD Display Drive Including Three Dec-
imal Points and 11 Annunciators
U• No Additional Active Components Required
• Low Power Dissipation - Less than 20mW - 1000 Hour
t4Typical Battery Life
• Display Hold Input
e• Continuity Output Drives Piezoelectric Beeper
• Low Battery Annunciator with On-Chip Detection
e• Guaranteed Zero Reading for 0V Input on All Ranges
The unit will autorange between the four different ranges. A
manual switch is used to select the 2 high group ranges. DC
current ranges are 4mA and 40mA in the low current group,
and 400mA and 4A in the high current group. Resistance
measurements are made on 4 ranges, which are divided into
two groups. The low resistance ranges are 4/40k. The high
resistance ranges are 0.4/4M. Resolution on the lowest
range is 1.
Ordering Information
TEMP.
PART NUMBER RANGE (oC) PACKAGE
PKG. NO.
ICL7139CPL
0 to 70 40 Ld PDIP E40.6
ICL7149CPL
0 to 70 40 Ld PDIP E40.6
ICL7149CM44
0 to 70 44 Ld MQFP Q44.10x10
hPinouts
SICL7139, ICL7149 (PDIP)
TOP VIEW
taPOL/AC 1
aBP2 2
BP1 3
.DV+ 4
V- 5
VREF 6
wLO7
HI8
wDEINT 9
COMMON 10
w omINT 1 11
.cINT V/12
UTRIPLE POINT 13
t4CAZ 14
eCINT 15
eBEEPER OUT 16
hmA/µA 17
SV//A 18
taHI-DC/LO-AC 19
aHOLD 20
40 ADG3/E3
39 B3/C3
38 F2/DP3
37 G2/E2
36 A2/D2
35 B2/C2
34 F1/DP2
33 G1/E1
32 A1/D1
31 B1/C1
30 F0/DP1
29 G0/E0
28 A0/D0
27 B0/C0
26 LO BAT/V
25 M/µA
24 /A
23 k/m
22 OSC IN
21 OSC OUT
A2/D2
G2/E2
F2/DP3
B3/C3
ADG3/E3
POL/AC
NC
BP2
BP1
V+
NC
ICL7149 (MQFP)
TOP VIEW
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
M/µA
/A
k/m
OSC IN
OSC OUT
HOLD
HI-DC/LO-AC
V//A
mA/µA
BEEPER OUT
NC
www.DCAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
File Number 3088.1
http://www.intersil.com or 407-727-9207 | Copyright © Intersil Corporation 1999
3-33



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ICL7139 pdf
Functional Block Diagram
ICL7139, ICL7149
SWITCHES
CRYSTAL
OSC
CONTROL LOGIC
INCLUDING
AUTORANGING LOGIC
BEEPER
DRIVER
DIGITAL COMMON
COUNTERS
DISPLAY
DRIVER
AND
LATCHES
PIEZO
ELECTRIC
BEEPER
DISPLAY
POWER
ANALOG SECTION
SUPPLY ANALOG SWITCHES, INTEGRATION
SECTION
AND COMPARATOR
V+ V- COM
EXTERNAL
RESISTORS
AND CAPACITORS
3-34



Part Number ICL7139
Description (ICL7139 / ICL7149) 33/4 Digit Autoranging Multimeter
Maker Intersil Corporation - Intersil Corporation
Total Page 13 Pages
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