Intersil

ICL7106 - 3 1/2 Digit LCD Display, A/D Converter

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Features Guaranteed Zero Reading for 0V Input on All Scales True Polarity at Zero for Precise Null Detection 1pA Typical Input Current True Differential Input and Reference, Direct Display Drive Low Noise On Chip Clock and Reference Low Power Dissipation No Additional Active Circuits Required Enhanced Display Stability

Pin Description Pin Number Description 1 V+ - Positive Supply 2 D1 - 1's Digit - D Segment 3 C1 - 1's Digit - C Segment 4 B1 - 1's Digit - B Segment 5 A1 - 1's Digit - A Segment 6 F1 - 1's Digit - F Segment 7 G1 - 1's Digit - G Segment 8 E1 - 1's Digit - E Segment 9 D2 - 10's Digit - D Segment 10 C2 - 10's Digit - C Segment 11 B2 - 10's Digit - B Segment 12 A2 - 10's Digit - A Segment 13 F2 - 10's Digit - F Segment 14 E2 - 10's Digit - E Segment 15 D3 - 100's Digit - D Segment 16 B3 - 100's Digit - B Segment 17 F3 - 100's Digit - F Segment 18 E3 - 100's Digit - E Segment 19 AB4 - 1000's Digit 20 POL - Polarity Sign 21 BP/GND - Backplane Conn. for LCD/Ground 22 G3 - 100's Digit - G Segment 23 A3 - 100's Digit - A Segment 24 C3 - 100's Digit - C Segment 25 G2 - 10's Digit - G Segment 26 Vneg - Negative Supply 27 INT - Integrator 28 BUFF - Buffer 29 A-Z - Auto Zero 30 IN LO - Input Low 31 IN HI - Input High 32 COMMON - Input Common 33 Cref- - Reference Capacitor 34 Cref+ - Reference Capacitor 35 REF LO - Reference Low 36 REF HI - Reference High 37 TEST - Test 38 OSC3 - Oscillator 39 OSC2 - Oscillator 40 OSC1 - Oscillator

Pin Layout Dimensional Drawing

Technical Data Data Sheet Intersil - Data Sheet for ICL7106 Application Notes The Integrating A/D Convertor Low Cost Digital Panel Meter Designs and Complete Instructions for LCD and LED Kits Building A Battery Operated Auto Ranging DVM With the ICL7106 Tips For Using Single Chip 3 1/2 Digit A/D Converters Overcoming Common Mode Range Issues When Using Intersil Integrating Converters