Electronic Components Datasheet Search |
|
TC7126ACKW Datasheet(PDF) 11 Page - TelCom Semiconductor, Inc |
|
TC7126ACKW Datasheet(HTML) 11 Page - TelCom Semiconductor, Inc |
11 / 13 page 3-227 TELCOM SEMICONDUCTOR, INC. 7 6 5 4 3 1 2 8 3-1/2 DIGIT ANALOG-TO-DIGITAL CONVERTERS TC7126 TC7126A TYPICAL GUARANTEED MAXIMUM TYPICAL TYPICAL 200 180 160 140 120 100 80 60 40 20 0 TC7126A ICL7136 NO MAXIMUM SPECIFIED NO MAXIMUM SPECIFIED ICL7126 Figure 8. TC7126A Internal Voltage Reference Connection Figure 7. Analog Common Temperature Coefficient APPLICATIONS INFORMATION Liquid Crystal Display Sources Several manufacturers supply standard LCDs to inter- face with the TC7126A 3-1/2 digit analog-to-digital con- verter. Decimal Point and Annunciator Drive The TEST pin is connected to the internally-generated digital logic supply ground through a 500 Ω resistor. The TEST pin may be used as the negative supply for external CMOS gate segment drivers. LCD annunciators for decimal points, low battery indication, or function indication may be added without adding an additional supply. No more than 1 mA should be supplied by the TEST pin: its potential is approximately 5V below V+. Flat Package The TC7126A is available in an epoxy 64-pin formed- lead flat package. A test socket for the TC7126ACBQ device is available: Part No. IC 51-42 Manufacturer: Yamaichi Distribution: Nepenthe Distribution 2471 East Bayshore Suite 520 Palo Alto, CA 94043 (415) 856-9332 Ratiometric Resistance Measurements The TC7126A's true differential input and differential reference make ratiometric readings possible. In ratiometric operation, an unknown resistance is measured with respect to a known standard resistance. No accurately-defined reference voltage is needed. The unknown resistance is put in series with a known standard and a current passed through the pair. The voltage developed across the unknown is applied to the input and the voltage across the known resistor applied to the refer- ence input. If the unknown equals the standard, the display will read 1000. The displayed reading can be determined from the following expression: Displayed reading = 1000. The display will overrange for RUNKNOWN ≥ 2 RSTANDARD. RUNKNOWN RSTANDARD V – ANALOG COMMON TC7126A VREF + 32 35 36 26 240 k Ω 10 k Ω VREF – VREF 1 + 9V SET VREF = 1/2 VFULL SCALE V + Representative Manufacturer Address/Phone Part Numbers* Crystaloid 5282 Hudson Dr., C5335, H5535, Electronics Hudson, OH 44236 T5135, SX440 216-655-2429 AND 720 Palomar Avenue FE 0801, Sunnyvale, CA 94086 FE 0203 408-523-8200 VGI, Inc. 1800 Vernon St., Ste. 2 I1048, I1126 Roseville, CA 95678 916-783-7878 Hamlin, Inc. 612 E. Lake St., 3902, 3933, 3903 Lake Mills, WI 53551 414-648-2361 *NOTE: Contact LCD manufacturer for full product listing/specifications. |
Similar Part No. - TC7126ACKW |
|
Similar Description - TC7126ACKW |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |