Motor de Búsqueda de Datasheet de Componentes Electrónicos |
|
TC820 Datasheet(PDF) 2 Page - TelCom Semiconductor, Inc |
|
TC820 Datasheet(HTML) 2 Page - TelCom Semiconductor, Inc |
2 / 22 page 3-150 TELCOM SEMICONDUCTOR, INC. 3-3/4 DIGIT A/D CONVERTER WITH FREQUENCY AND LOGIC PROBE TC820 A "peak reading hold" input allows the TC820 to retain the highest A/D or frequency reading. This feature is useful in measuring motor starting current, maximum tempera- ture, and similar applications. A family of instruments can be created with the TC820. No additional design effort is required to create instruments with 3-3/4 digit resolution. The TC820 operates from a single 9V battery, with typical power of 10 mW. Packages include a 40-pin plastic DIP, 44-pin plastic flat package, and 44-pin PLCC. COMPETITIVE EVALUATION Features Comparison TC820 7106 3-3/4 Digit Resolution Yes No Auto-Ranging Frequency Counter Yes No Logic Probe Yes No Decimal Point Drive Yes No Peak Reading Hold Yes No (Frequency or Voltage) Display Hold Yes No Simple 10:1 Range Change Yes No Buzzer Drive Yes No Low Battery Detection Yes No With Annunciator Overrange Detection Yes No With Annunciator Low Drift Reference Yes No Underrange/Overrange Yes No Logic Output Input Overload Display "OL" "1" LCD Annunciator Driver Yes No LCD Drive Type Triplexed Direct LCD Pin Connections 15 24 LCD Elements 36 23 GENERAL DESCRIPTION The TC820 is a 3-3/4 digit measurement system com- bining an integrating analog-to-digital converter, frequency counter, and logic level tester in a single package. The TC820 supersedes the TC7106 in new designs by improv- ing performance and reducing system cost. The TC820 adds features that are difficult, expensive, or impossible to provide with older A/D converters (see the competitive evaluation). The high level of integration permits TC820- based instruments to deliver higher performance and more features, while actually reducing parts count. Fabricated in low-power CMOS, the TC820 directly drives a 3-3/4 digit (3999 maximum) LCD. With a maximum range of 3999 counts, the TC820 provides 10 times greater resolution in the 200mV to 400mV range than traditional 3-1/2 digit meters. An auto-zero cycle guarantees a zero reading with a 0V input. CMOS process- ing reduces analog input bias current to only 1pA. Rollover error (the difference in readings for equal magnitude but opposite polarity input signals) is less than ±1 count. Differ- ential reference inputs permit ratiometric measurements for ohms or bridge transducer applications. The TC820's frequency counter option simplifies design of an instrument well-suited to both analog and digital troubleshooting: voltage, current, and resistance measure- ments, plus precise frequency measurements to 4MHz (higher frequencies can be measured with an external prescaler), and a simple logic probe. The frequency counter will automatically adjust its range to match the input fre- quency, over a four-decade range. Two logic level measurement inputs permit a TC820- based meter to function as a logic probe. When combined with external level shifters, the TC820 will display logic levels on the LCD and also turn on a piezoelectric buzzer when the measured logic level is low. Other TC820 features simplify instrument design and reduce parts count. On-chip decimal point drivers are in- cluded, as is a low battery detection annunciator. A piezo- electric buzzer can be controlled with an external switch or by the logic probe inputs. Two oscillator options are pro- vided: A crystal can be used if high accuracy frequency measurements are desired, or a simple RC option can be used for low-end instruments. |
Número de pieza similar - TC820 |
|
Descripción similar - TC820 |
|
|
Enlace URL |
Política de Privacidad |
ALLDATASHEET.ES |
¿ALLDATASHEET es útil para Ud.? [ DONATE ] |
Todo acerca de Alldatasheet | Publicidad | Contáctenos | Política de Privacidad | Intercambio de Enlaces | Lista de Fabricantes 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 |