CA3162AE Harris Corporation, CA3162AE Datasheet

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CA3162AE

Manufacturer Part Number
CA3162AE
Description
A/D converter for 3-digit display
Manufacturer
Harris Corporation
Datasheet

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
CA3162AE
Manufacturer:
2002+
Quantity:
6 230
December 1993
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper I.C. Handling Procedures.
Copyright
Features
• Dual Slope A/D Conversion
• Multiplexed BCD Display
• Ultra Stable Internal Band Gap Voltage Reference
• Capable of Reading 99mV Below Ground with Single
• Differential Input
• Internal Timing - No External Clock Required
• Choice of Low Speed (4Hz) or High Speed (96Hz)
• “Hold” Inhibits Conversion but Maintains Delay
• Overrange Indication
• BCD-to-Seven-Segment Decoder/Driver
• Extended Temperature Range Version Available
Pinout
Supply
Conversion Rate
- “EEE” for Reading Greater than +999mV, “-” for
Reading More Negative than -99mV When Used
With CA3161E
©
Harris Corporation 1993
S E M I C O N D U C T O R
OUTPUTS
SELECT
OUTPUTS
DIGIT
BCD
ZERO ADJ
BYPASS
HOLD/
MSD
GND
NSD
LSD
2
2
1
0
1
2
3
4
5
6
7
8
CA3162 (PDIP)
TOP VIEW
2-5
Description
The CA3162E and CA3162AE are I
verters that provide a 3 digit multiplexed BCD output. They
are used with the CA3161E BCD-to-Seven-Segment
Decoder/Driver* and a minimum of external parts to imple-
ment a complete 3 digit display. The CA3162AE is identical
to the CA3162E except for an extended operating tempera-
ture range.
* The CA3161E is described in Display Drivers section of this data
Ordering Information
CA3162E
CA3162AE
book.
NUMBER
PART
16
15
14
13
12
11
10
9
A/D Converter for 3-Digit Display
2
2
V+
GAIN ADJ
INTEGRATING
CAP
HIGH INPUT
LOW INPUT
ZERO ADJ
3
2
BCD
OUTPUTS
TEMPERATURE
-40
0
o
C to +70
o
RANGE
C to +85
CA3162
o
C
o
C
2
16 Lead Plastic DIP
16 Lead Plastic DIP
L monolithic A/D con-
File Number
PACKAGE
1080.1

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CA3162AE Summary of contents

Page 1

... BCD output. They are used with the CA3161E BCD-to-Seven-Segment Decoder/Driver* and a minimum of external parts to imple- ment a complete 3 digit display. The CA3162AE is identical to the CA3162E except for an extended operating tempera- ture range. * The CA3161E is described in Display Drivers section of this data book ...

Page 2

Functional Block Diagram V+ ZERO ADJ HIGH INPUT V/I 10 CONVERTER LOW INPUT REFERENCE CURRENT GENERATOR † MSD = MOST SIGNIFICANT DIGIT NSD = NEXT SIGNIFICANT DIGIT LSD = LEAST SIGNIFICANT DIGIT CA3162, CA3162A V+ BCD OUTPUTS ...

Page 3

... Plastic DIP Package . . . . . . . . . . . . . . . . . . . . . . . . . . +150 C Operating Temperature Range o C CA3162E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0 to +75 CA3162AE -40 Maximum Power Dissipation Plastic DIP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.67W Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +150 5V, Zero Pot Centered, Gain Pot = 2.4k Unless Otherwise Specified TEST CONDITIONS 100k Pins Pins 10 and 11 ...

Page 4

Timing Diagram 12 5 (LSD) 4 (MSD) 3 (NSD) 2ms/DIVISION FIGURE 1. HIGH SPEED MODE Detailed Description The Functional Block Diagram of the CA3162E shows the V/I converter and reference current generator, which is the heart of the system. The ...

Page 5

CA3162E Liquid Crystal Display (LCD) Application Figure 3 shows the CA3162E in a typical LCD application. LCDs may be used in favor of LED displays in applications requiring lower power dissipation, such as battery-operated equipment, or when visibility in high-ambient-light ...

Page 6

CA3162E Common-Cathode, LED Display Application Figure 4 shows the CA3162E connected to a CD4511B decode/driver to operate a common-cathode LED display. Unlike the CA3161E, the CD4511B remains blank for all BCD codes greater than nine. After 999mV the display blanks ...

Page 7

Die Characteristics DIE DIMENSIONS: 101 x 124 x 20 1mils METALLIZATION: Type: Al Å Å Thickness: 17.5k 2.5k GLASSIVATION: Type: 3% PSG Å Å Thickness: 13k 2.5k Metallization Mask Layout HIGH INPUT INTEGRATING CAP GAIN ADJ CA3162, CA3162A CA3162, CA3162A ...

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