Electronic Components Datasheet Search |
|
LMV331IDBVT Datasheet(PDF) 11 Page - Texas Instruments |
|
|
LMV331IDBVT Datasheet(HTML) 11 Page - Texas Instruments |
11 / 39 page LMV331, LMV393, LMV339 www.ti.com SLCS136T – AUGUST 1999 – REVISED JANUARY 2015 9.2.2.1 Input Voltage Range When choosing the input voltage range, the input common mode voltage range (VICR) must be taken in to account. If operating temperature is above or below 25°C the VICR can range from 0 V to VCC– 0.7 V. This limits the input voltage range to as high as VCC– 0.7 V and as low as 0 V. Operation outside of this range can yield incorrect comparisons. Below is a possible list of input voltage situation and their outcomes: 1. When both IN- and IN+ are both within the common mode range: (a) If IN- is higher than IN+ and the offset voltage, the output is low and the output transistor is sinking current (b) If IN- is lower than IN+ and the offset voltage, the output is high impedance and the output transistor is not conducting 2. When IN- is higher than common mode and IN+ is within common mode, the output is low and the output transistor is sinking current 3. When IN+ is higher than common mode and IN- is within common mode, the output is high impedance and the output transistor is not conducting 4. When IN- and IN+ are both higher than common mode, the output is low and the output transistor is sinking current 9.2.2.2 Minimum Overdrive Voltage Overdrive Voltage is the differential voltage produced between the positive and negative inputs of the comparator over the offset voltage (VIO). In order to make an accurate comparison; the Overdrive Voltage (VOD) should be higher than the input offset voltage (VIO). Overdrive voltage can also determine the response time of the comparator, with the response time decreasing with increasing overdrive. Figure 10 show positive and negative response times with respect to overdrive voltage. 9.2.2.3 Output and Drive Current Output current is determined by the pull-up resistance (Rpullup) and Vlogic voltage, refer to Figure 9. The output current will produce a output low voltage (VOL) from the comparator. In which VOL is proportional to the output current. Use Figure 3 to determine VOL based on the output current. The output current can also effect the transient response. More will be explained in the next section. 9.2.2.4 Response Time The transient response can be determined by the load capacitance (CL), load/pull-up resistance (RPULLUP) and equivalent collector-emitter resistance (RCE). • The positive response time ( τp) is approximately τP ~ RPULLUP × CL • The negative response time ( τN) is approximately τN ~ RCE × CL – RCE can be determine by taking the slope of Figure 3 in it's linear region at the desired temperature, or by dividing the VOL by Iout 9.2.3 Application Curves The following curves were generated with 5 V on VCC and VLogic, RPULLUP = 5.1 kΩ, and 50 pF scope probe. Copyright © 1999–2015, Texas Instruments Incorporated Submit Documentation Feedback 11 |
Similar Part No. - LMV331IDBVT |
|
Similar Description - LMV331IDBVT |
|
|
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 |