مبدل آنالوگ_دیجیتال ۳.۵ رقمی مخصوص ۷سگمنت ICL7107CPL

Features, Applications

The Intersil ICL7106 and ICL7107 are high performance, low power, 31/2 digit A/D converters. Included are seven segment decoders. display drivers, a reference, and a clock. The ICL7106 is designed to interface with a liquid crystal display (LCD). and includes a multiplexed backplane drive. the ICL7107 will directly drive an instrument size light emitting diode (LED) display. The ICL7106 and ICL7107 bring together a combination of high accuracy, versatility. and true economy. It features autozero to less than 10µV. zero drift of less than 1µV/oC, input bias current of 10pA (Max).and rollover error of less than one count. True differential inputs and reference are useful in all systems. but give the designer an uncommon advantage when measuring load cells, strain gauges and other bridge type transducers. Finally, the true economy of single power supply operation (ICL7106). enables a high performance panel meter to be built with the addition of only 10 passive components and a display.

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 – LCD ICL7106, LED lCL7107 Low Noise – Less Than 15µVP-P On Chip Clock. and Reference Low Power Dissipation. Typically Less Than 10mW No Additional Active Circuits Required Enhanced Display Stability

PART NO. ICL7107SCPL ICL7107CM44 TEMP. RANGE (oC) to 70 PACKAGE 40 Ld PDIP 44 Ld MQFP 40 Ld PDIP 40 Ld PDIP (Note) 40 Ld PDIP (Note) 44 Ld MQFP PKG. NO. E40.6 Q44.10×10

NOTE: “R” indicates device with reversed leads for mounting to PC board underside. “S” indicates enhanced stability

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright © Intersil Americas Inc. 2002. All Rights Reserved

(1000) AB4 (MINUS) POL OSC 1 39 OSC 2 38 OSC 3 37 TEST 36 REF HI 35 REF LO 34 CREF+ 33 CREF32 COMMON LO 29 A-Z 28 BUFF 27 INT G3 21 BP/GND (100’s) OSC 1 OSC 2 OSC 3 TEST REF HI REF LO CREF+ CREFCOMMON IN LO A-Z BUFF INT A3 G3 BP/GND

Supply Voltage V- to GND. -9V Analog Input Voltage (Either Input) (Note V+ to VReference Input Voltage (Either Input). V+ to VClock Input ICL7106. TEST V+ ICL7107. GND to V+

Thermal Resistance (Typical, Note 2) JA (oC/W) PDIP Package. 50 MQFP Package. 75 Maximum Junction Temperature.150oC Maximum Storage Temperature Range. to 150oC Maximum Lead Temperature (Soldering 10s).300oC (MQFP – Lead Tips Only)

CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.

NOTES: 1. Input voltages may exceed the supply voltages provided the input current is limited JA is measured with the component mounted on a low effective thermal conductivity test board in free air. See Tech Brief TB379 for details. Electrical Specifications PARAMETER SYSTEM PERFORMANCE Zero Input Reading Stability (Last Digit) (ICL7106S, ICL7107S Only) Ratiometric Reading Rollover Error VIN = 0.0V, Full Scale = 200mV Fixed Input Voltage (Note 6) VlN = VREF , VREF = 100mV -VIN = +VlN 200mV Difference in Reading for Equal Positive and Negative Inputs Near Full Scale Full Scale 200mV or Full Scale = 2V Maximum Deviation from Best Straight Line Fit (Note 5) VCM = 1V, VIN = 0V, Full Scale = 200mV (Note 5) VIN = 0V, Full Scale = 200mV (Peak-To-Peak Value Not Exceeded 95% of Time) VlN = 0 (Note 5) VlN To 70oC (Note 5) VIN To 70oC, (Ext. Ref. 0ppm/× oC) (Note 5) VIN = 0 (Does Not Include LED Current for ICL7107) Digital Reading Digital Reading Digital Reading Counts (Note 3) TEST CONDITIONS MIN TYP MAX UNIT

Linearity Common Mode Rejection Ratio Noise Leakage Current Input Zero Reading Drift Scale Factor Temperature Coefficient End Power Supply Character V+ Supply Current

End Power Supply Character V- Supply Current ICL7107 Only COMMON Pin Analog Common Voltage Temperature Coefficient of Analog Common DISPLAY DRIVER ICL7106 ONLY Peak-To-Peak Segment Drive Voltage Peak-To-Peak Backplane Drive Voltage = 9V (Note 4) 25k Between Common and Positive Supply (With Respect to + Supply) 25k Between Common and Positive Supply (With Respect to + Supply)