Electronic Components Datasheet Search |
|
TLC2810 Datasheet(PDF) 22 Page - Texas Instruments |
|
|
TLC2810 Datasheet(HTML) 22 Page - Texas Instruments |
22 / 23 page – + VO CL VI 2.5 V TA = 25°C f = 1 kHz VI(PP) = 1 V – 2.5 V – + R P + V DD * V O I F ) I L ) I P IP = Pullup Current Required by the Operational Amplifier (typically 500 µA) VO VDD RP IP IF IL RL VI R1 R2 Figure 35. Resistive Pullup to Increase VOH Figure 36. Test Circuit for Output Characteristics TLC2810Z, TLC2810Y LinCMOS ™ PRECISION DUAL OPERATIONAL AMPLIFIERS SLOS120A – AUGUST 1993 – REVISED AUGUST 1994 22 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 APPLICATION INFORMATION output characteristics The output stage of the TLC2810Z is designed to sink and source relatively high amounts of current (see Typical Characteristics). If the output is subjected to a short-circuit condition, this high- current capability can cause device damage under certain conditions. Output current capability increases with supply voltage. Although the TLC2810Z possesses excellent high-level output voltage and current capability, methods are available for boosting this capability if needed. The simplest method involves the use of a pullup resistor (RP) connected from the output to the positive supply rail (see Figure 35). There are two disadvantages to the use of this circuit. First, the NMOS pulldown transistor, N4 (see equivalent schematic), must sink a comparatively large amount of current. In this circuit, N4 behaves like a linear resistor with an on-resistance between approximately 60 Ω and 180 Ω, depending on how hard the operational amplifier input is driven. With very low values of RP, a voltage offset from 0 V at the output occurs. Secondly, pullup resistor RP acts as a drain load to N4, and the gain of the operational amplifier is reduced at output voltage levels where N5 is not supplying the output current. All operating characteristics of the TLC2810Z are measured using a 20-pF load. The devices can drive higher capacitive loads; however, as output load capacitance increases, the resulting response pole occurs at lower frequencies, thereby causing ringing, peaking, or even oscillation (see Figure 37). In many cases, adding some compensation in the form of a series resistor in the feedback loop alleviates the problem. (a) CL = 20 pF, RL = NO LOAD (b) CL = 130 pF, RL = NO LOAD (c) CL = 150 pF, RL = NO LOAD Figure 37. Effect of Capacitive Loads |
Similar Part No. - TLC2810 |
|
Similar Description - TLC2810 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | 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 |