ICL7107SCPL datasheet(5/17 Pages) ARTSCHIP

5 / 17 page

ICL7106,ICL7107,ICL7016S,ISL7107S

31/2 Digit,

LCD/LED Display, A/D Converters

www.artschip.com

Design Information Summary Sheet

.OSCILLATOR FREQUENCY

fOSC=0.45/RC

COSC>50pF; ROSC>50kΩ

fOSC (Typ)=48kHz

.OSCILLATOR PERIOD

tOSC=RC/0.45

.INTEGRATION CLOCK FREQUENCY

fCLOCK=fOSC/4

.INTEGRATION PERIOD

tINT=1000x(4/fOSC)

.60/50Hz REJECTION CRITERION

tINT/t60Hz or tINT/t60Hz=Integer

.OPTIMUM INTEGRATION CURRENT

IINT=4µA

.FULL SCALE ANALOG INPUT VOLTAGE

VINFS(TYP)=200mV or 2V

.INTEGRATE RESISTOR

RINT=VINFS/IINT

.INTEGRATE CAPACITOR

CINT=( tINT )(IINT )/VINT

.INTEGRATOR OUTPUT VOLTAGE SWING

VINT=(tINT)(IINT)/CINT

.VINT MAXIMUM SWING:

(V- + 0.5V)<VINT<(V+-0.5V), VINT(Typ)=2V

.DISPLAY COUNT

.CONVERSION CYCLE

tCYC=tCLOCK x4000

tCYC=tOSC x16000

When fOSC=48kHz; tCYC=333ms

.COMMON MODE INPUT VOLTAGE

(V-+1V)<VIN<(V+-0.5V)

.AUTO-ZERO CAPACITOR

0.01µF<CAZ<1µF

.REFERENCE CAPACITIOR

0.1µF< CREF<1µF

.VCOM

Biaced between Vi and V-.

.VCOM ≈ V+-2.8V

Regulation lost when V+ to V- <≈6.8V

If VCOM is externally pulled down to (V+ to V-)/2,

The VCOM circuit will turn off.

.ICL7106 POWER SUPPLY:SINGLE 9V

V+ - V- =9V

Digital supply is generated internally

VGND≈V+ - 4.5V

.ICL7106: DISPLAY: LED

Type: Direct drive with digital logic supply amplitude.

.ICL7107 POWER SUPPLY:DUAL ± 5.0V

V+ = +5V to GND

V- = - 5V to GND

Digital Logic and LED driver supply V+ to GND

.ICL7107: DISPLAY: LED

Type: Direct drive with digital logic supply amplitude.

Typical Integrator Amplifier Output Waveform (INT Pin)

ICL7107SCPL Datasheet(PDF) 5 Page - ARTSCHIP ELECTRONICS CO.,LMITED.

ICL7107SCPL Datasheet(HTML) 5 Page - ARTSCHIP ELECTRONICS CO.,LMITED.

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