Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsData collecting ICsData acquisition IC - ADC 3.5 digit PDIP 40

⁄2 Digit A/D Converters

ICL7106/ICL7107

General Description

The Maxim ICL7106/ICL7107 are monolithic analog-to-

digital converters (ADCs). They have very high input

impedances and require no external display drive cir-

cuitry. On-board active components include polarity and

digit drivers, segment decoders, voltage reference and

a clock circuit. The ICL7106 will directly drive a nonmulti-

plexed liquid crystal display (LCD), whereas the ICL7107

will directly drive a common anode light emitting diode

(LED) display.

Versatility and accuracy are inherent features of these

converters. The dual-slope conversion technique auto-

matically rejects interference signals common in industri-

al environments. The true differential input and reference

are particularly useful when making ratiometric measure-

ments (ohms or bridge transducers). Maxim has added

a zero-integrator phase to the ICL7106 and ICL7107,

eliminating overrange hangover and hysteresis effects.

Finally, these devices offer high accuracy by lowering

rollover error to less than one count and zero reading

drift to less than 1FV/NC.

These devices are used in a wide range of digital panel

meter applications. Most applications, however, involve

the measurement and display of analog data.

Applications

Features

S Improved 2nd Source (see Page 3 for “Maxim

Advantage”)

S Guaranteed First Reading Recovery from

Overrange

S On-Board Display Drive Capability—No External

Circuitry Required

LCD—ICL7106

LED—ICL7107

S High-Impedance CMOS Differential Inputs

S Low Noise (< 15µV

P-P

) without Hysteresis or

Overrange Hangover

S Clock and Reference On-Chip

S True Differential Reference and Input

S True Polarity Indication for Precision Null

Applications

S Monolithic CMOS Design

Pressure

Voltage

Resistance

Temperature

Conductance

Current

Speed

Material

Thickness

Typical Operating Circuit

Pin Configurations

Order Information

+Denotes a lead(Pb)-free/RoHS-compliant package.

The "Maxim Advantage" signifies an upgraded quality level. At no additional cost we offer a second-source device that is subject to

the following: guaranteed performance over temperature along with tighter test specifications on many key parameters; and device

enhancement, when needed, that result in improved performance without changing the functionality.

19-0948; Rev 1; 1/12

Pin Configurations continued at end of data sheet

PDIP

PART TEMP RANGE PIN-PACKAGE

ICL7106CPL+ 0°C to +70°C 40 PDIP

ICL7106CQH+ 0°C to +70°C 44 PLCC

ICL7107CPL+ 0°C to +70°C 40 PDIP

ICL7107CQH+ 0°C to +70°C 44 PLCC

ICL7106

ANALOG

INPUT

REF

TO ANALOG

COMMON (P32)

FULL-SCALE INPUT

2.000V

200.0mV

REF

1.000V

100.0mV

LCD DISPLAY

AVAILABLE

Functional Diagrams

Pin Configurations appear at end of data sheet.

Functional Diagrams continued at end of data sheet.

UCSP is a trademark of Maxim Integrated Products, Inc.

For pricing, delivery, and ordering information, please contact Maxim Direct

at 1-888-629-4642, or visit Maxim’s website at www.maximLQWHJUDWHG.com.

ICL7106/7107

For pricing, delivery, and ordering information, please contact Maxim Direct

at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.

Summary of content (14 pages)

PAGE 1
ICL7106/7107 LE AVAILAB ICL7106/ICL7107 31⁄2 Digit A/D Converters General Description The Maxim ICL7106/ICL7107 are monolithic analog-todigital converters (ADCs). They have very high input impedances and require no external display drive circuitry. On-board active components include polarity and digit drivers, segment decoders, voltage reference and a clock circuit.
PAGE 2
ICL7106/ICL7107 31⁄2 Digit A/D Converters ABSOLUTE MAXIMUM RATINGS Supply Voltage ICL7106, V+ to V-...............................................................15V ICL7107, V+ to GND......................................................... +6V ICL7107, V- to GND............................................................-9V Analog Input Voltage (either input) (Note 1).................. V+ to VReference Input Voltage (either input)............................V+ to VClock Input ICL7106......................
PAGE 3
ICL7106/ICL7107 31⁄2 Digit A/D Converters ELECTRICAL CHARACTERISTICS (continued) (Note 3) PARAMETER ICL7106 Only Pk-Pk Segment Drive Voltage, Pk-Pk Backplane Drive Voltage (Note 5) ICL7107 Only Segment Sinking Current CONDITIONS MIN TYP MAX UNITS V+ to V- = 9V 4 5 6 V (Except pin 19) V+ = 5.0V, segment voltage = 3V 5 8.0 Pin 19 only 10 16 mA Note 3: Unless otherwise noted, specifications apply to both the ICL7106 and ICL7107 at TA = +25NC, fCLOCK = 48kHz.
PAGE 4
ICL7106/7107 ICL7106/ICL7107 31⁄2 Digit A/D Converters +2kV 4 Maxim Integrated Maxim Integrated 3
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ICL7106/ICL7107 ICL7106/7107 4 Maxim Integrated 31⁄2 Digit A/D Converters Maxim Integrated 5
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ICL7106/ICL7107 ICL7106/7107 31⁄2 Digit A/D Converters 6 Maxim Integrated Maxim Integrated 5
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ICL7106/7107 ICL7106/ICL7107 31⁄2 Digit A/D Converters 6 Maxim Integrated Maxim Integrated 7
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ICL7106/ICL7107 ICL7106/7107 31⁄2 Digit A/D Converters Maxim Integrated 8 7 Maxim Integrated
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ICL7106/7107 ICL7106/ICL7107 31⁄2 Digit A/D Converters Maxim Integrated 8 9 Maxim Integrated
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ICL7106/ICL7107 ICL7106/7107 31⁄2 Digit A/D Converters 10 Maxim Integrated Maxim Integrated 9
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ICL7106/7107 ICL7106/ICL7107 31⁄2 Digit A/D Converters Maxim Integrated 10 11 Maxim Integrated
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ICL7106/ICL7107 ICL7106/7107 31⁄2 Digit A/D Converters Typical Applications 12 Maxim Integrated Maxim Integrated 11
PAGE 13
ICL7106/ICL7107 31⁄2 Digit A/D Converters Pin Configurations (continued) Chip Information PROCESS: BiCMOS Package Information For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. PLCC PACKAGE TYPE PACKAGE CODE DOCUMENT LAND PATTERN NO. No.
PAGE 14
ICL7106/ICL7107 31⁄2 Digit A/D Converters Revision History REVISION NUMBER REVISION DATE 0 10/84 Initial release 1 1/12 Removed CERDIP options. DESCRIPTION PAGES CHANGED — 1, 2, 4, 12 Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time.