LM111, LM211, LM311, LM311Y DIFFERENTIAL COMPARATORS WITH STROBES

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1 Fast Response Times Strobe Capability Maximum Input Bias Current...3 na Maximum Input Offset Current...7 na Can Operate From Single -V Supply Designed Be Interchangeable With National Semiconducr LM, LM, and LM3 description The LM, LM, and LM3 are single high-speed voltage comparars. These devices are designed operate from a wide range of power supply voltages, including ± -V supplies for operational amplifiers and -V supplies for logic systems. The output levels are compatible with most TTL and MOS circuits. These comparars are capable of driving lamps or relays and switching voltages up V at ma. All inputs and outputs can be isolated from system ground. The outputs can drive loads referenced ground, V CC+ or V CC. Offset balancing and strobe capabilities are available, and the outputs can be wire-or connected. If the strobe is low, the output will be in the off state regardless of the differential input. The LM is characterized for operation over the full military range of C C. The LM is characterized for operation from 4 C 8 C, and the LM3 is characterized for operation from C 7 C. functional block diagram BALAE IN+ IN + COL OUT EMIT OUT EMIT OUT IN+ IN V CC BALAE EMIT OUT IN+ IN V CC LM...J PACKAGE V CC + COL OUT LM...JG PACKAGE LM, LM3... D, DB, P, OR PW PACKAGE (TOP VIEW) EMIT OUT IN+ IN V CC IN+ IN LM...U PACKAGE (TOP VIEW) LM...FK PACKAGE (TOP VIEW) EMIT OUT (TOP VIEW) 3 4 V CC BALAE V CC + V CC + COL OUT BALAE V CC + COL OUT BALAE COL OUT PRODUCTION DATA information is current as of publication date. Products conform specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright 99, Texas Instruments Incorporated POST OFFICE BOX 633 DALLAS, TEXAS 76

2 TA C 7 C 4 C 8 C VIOmax at C SMALL OUTLINE (D) SSOP (DB) CHIP CARRIER (FK) AVAILABLE OPTIONS PACKAGED DEVICES CERAMIC DIP (J) CERAMIC DIP (JG) PLASTIC DIP (P) TSSOP (PW) FLATPACK (U) CHIP FORM (Y) 7. mv LM3D LM3DBLE LM3P LM3PWLE LM3Y 3 mv LMD LMP C C 3 mv LMFK LMJ LMJG LMU The D package is available taped and reeled. Add the suffix R (e.g., LM3DR). The DB and PW packages are only available left-end taped and reeled. schematic BALAE 3 Ω 3 Ω VCC +.3 kω.3 kω 7 Ω 7 Ω 6 Ω. kω IN +. kω 4 kω IN COL OUT 6 Ω 4 Ω 4 Ω 3 Ω 6 Ω Ω Ω kω 4 Ω EMIT OUT VCC All resisr values shown are nominal. Component Count Resisrs Diodes Epifet Transisrs POST OFFICE BOX 633 DALLAS, TEXAS 76

3 LM3Y chip information This chip, when properly assembled, displays characteristics similar the LM3. Thermal compression or ultrasonic bonding may be used on the doped-aluminum bonding pads. Chips may be mounted with conductive epoxy or a gold-silicon preform. BONDING PAD ASSIGNMENTS () (8) () (7) BALAE IN+ IN () () (3) + (8) COL OUT (7) 6 (6) (4) VCC () EMIT OUT (3) CHIP THICKNESS: TYPICAL (4) () (6) BONDING PADS: 4 4 MINIMUM TJ max = C TOLERAES ARE ±%. ALL DIMENSIONS ARE IN MILS. POST OFFICE BOX 633 DALLAS, TEXAS 76 3

4 absolute maximum ratings over operating free-air temperature range (unless otherwise noted) Supply voltage, V CC+ (see Note ) V Supply voltage, V CC (see Note ) V Supply voltage, V CC+ V CC V Differential input voltage, V ID (see Note ) ±3 V Input voltage, V I (either input, see Notes and 3) ± V Voltage from emitter output V CC V Voltage from collecr output V CC : LM V LM V LM V Duration of output short circuit (see Note 4) s Continuous tal dissipation See Dissipation Rating Table Operating free-air temperature range, T A : LM C C LM C 8 C LM C 7 C Srage temperature range C C Case temperature for 6 seconds: FK package C Lead temperature,6 mm (/6 inch) from case for seconds: J, JG, or U package C Lead temperature,6 mm (/6 inch) from case for 6 seconds: D, DB, P, or PW package C Stresses beyond those listed under absolute maximum ratings may cause permanent damage the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating conditions is not implied. Exposure absolute-maximum-rated conditions for extended periods may affect device reliability. NOTES:. All voltage values, unless otherwise noted, are with respect the midpoint between and VCC.. Differential voltages are at IN+ with respect IN. 3. The magnitude of the input voltage must never exceed the magnitude of the supply voltage or ± V, whichever is less. 4. The output may be shorted ground or either power supply. PACKAGE TA C POWER RATING DERATING FACTOR DISSIPATION RATING TABLE DERATE ABOVE TA TA = 7 C POWER RATING TA = 8 C POWER RATING TA = C POWER RATING D mw.8 mw/ C 64 C 464 mw 377 mw DB or PW mw 4. mw/ C 3 C 336 mw FK mw. mw/ C C mw mw 7 mw J mw. mw/ C C mw mw 7 mw JG mw 8.4 mw/ C 9 C mw mw mw P mw 8. mw/ C 88 C mw mw U mw.4 mw/ C 7 C 43 mw 3 mw 3 mw recommended operating conditions MIN MAX UNIT Supply voltage, VCC + VCC 3. 3 V Input voltage ( VCC± V) VCC +.. V LM Operating free-air temperature range, TA LM 4 8 C LM3 7 4 POST OFFICE BOX 633 DALLAS, TEXAS 76

5 electrical characteristics at specified free-air temperature, V CC± = ± V (unless otherwise noted) LM, LM LM3 PARAMETER TEST CONDITIONS TA MIN TYP MAX MIN TYP MAX VIO Input offset voltage See Note IIO Input offset current See Note IIB Input bias current VO = V 4 V IIL(S) VICR AVD IOH VOL ICC + ICC Low-level strobe current (see Note 6) Common-mode input voltage range Large-signal differential voltage amplification High-level l (collecr) output current C Full range 4 C 4 6 Full range 7 C 7 Full range 3 V(strobe) =.3 V, VID mv C 3 3 ma Full range UNIT VO = V 3 V, RL = C 4 4 V/mV I(strobe) = 3 ma, C. na VID = mv, VOH = 3 V Full range. µa VID = mv, VOH = 3 V C. na VID = mv C.7. IOL =ma Low-level VID = mv C.7. (collecr--emitter) = 4. V, output VID = 6 mv Full range.3.4 voltage VCC =, IOL = 8 ma VID = mv Full range.3.4 Supply current from, output low Supply current from VCC, output high VID = mv, No load C ma VID = mv, No load C ma Unless otherwise noted, all characteristics are measured with BALAE and open and the emitter output grounded. Full range for LM is C C, for LM is 4 C 8 C, and for LM3 is C 7 C. All typical values are at TA = C. NOTES:. The offset voltages and offset currents given are the maximum values required drive the collecr output up 4 V or down V with a pullup resisr of 7. kω VCC +. These parameters actually define an error band and take in account the worst-case effects of voltage gain and input impedance. 6. The strobe should not be shorted ground; it should be current driven at 3 ma ma (see Figures 3 and 7). switching characteristics, V CC± = ± V, T A = C PARAMETER Response time, low--high-level output Response time, high--low-level output NOTE 7: TEST CONDITIONS RC = Ω V V, CL =pf pf, See Note 7 LM, LM, LM3 MIN TYP MAX mv na na V V UNIT ns 6 ns The response time specified is for a -mv input step with -mv overdrive and is the interval between the input step function and the instant when the output crosses.4 V. POST OFFICE BOX 633 DALLAS, TEXAS 76

6 electrical characteristics at V CC± = ± V (unless otherwise noted) PARAMETER TEST CONDITIONS LM3Y MIN TYP MAX VIO Input offset voltage See Note 7. mv IIO Input offset current See Note 6 na IIB Input bias current VO = V 4 V na IIL(S) Low-level strobe current (see Note 6) V(strobe) =.3 V, VID mv 3 ma VICR Common-mode input voltage range AVD Large-signal differential voltage amplification VO = V 3 V, RL = 4 V/mV IOH High-level (collecr) output current Istrobe = 3 ma, VID = mv, VOH = 3 V. na VOL Low-level (collecr--emitter) output voltage IOL = ma, VID = mv.7. V ICC+ Supply current from, output low VID = mv, No load. 7. ma ICC Supply current from VCC, output low VID = mv, No load 4. ma Unless otherwise noted, all characteristics are measured with BALAE and open and the emitter output grounded. NOTES:. The offset voltages and offset currents given are the maximum values required drive the collecr output up 4 V or down V with a pullup resisr of 7. kω VCC +. These parameters actually define an error band and take in account the worst-case effects of voltage gain and input impedance. 6. The strobe should not be shorted ground; it should be current driven at 3 ma ma (see Figures 3 and 7). switching characteristics, V CC± = ± V, T A = C PARAMETER Response time, low--high-level output Response time, high--low-level output NOTE 7: TEST CONDITIONS RC = Ω V V, CL =pf pf, See Note 7 LM3Y MIN TYP MAX UNIT V UNIT ns 6 ns The response time specified is for a -mv input step with -mv overdrive and is the interval between the input step function and the instant when the output crosses.4 V. 6 POST OFFICE BOX 633 DALLAS, TEXAS 76

7 TYPICAL CHARACTERISTICS INPUT OFFSET CURRENT vs FREE-AIR TEMPERATURE INPUT BIAS CURRENT vs FREE-AIR TEMPERATURE Input Offset Current na IIO LM LM Condition LM LM LM3 LM VCC± = ± V VO = V 4 V See Note A Condition 8 4 Input Bias Current na IIB LM LM LM3 LM3 Condition LM LM VCC± = ± V VO = V 4 V See Note A Condition 8 4 TA Free-Air Temperature C TA Free-Air Temperature C Figure Figure NOTE A: Condition is with BALAE and open. Condition is with BALAE and connected. 6 VOLTAGE TRANSFER CHARACTERISTICS = 3 V VCC = TA = C LM LM VID = 3 V VI = V (LM, LM) 4 V (LM3) Voltage V 4 3 Emitter RL = 6 Ω LM3 Collecr RL = VCC COLLECTOR OUTPUT TRANSFER CHARACTERISTIC TEST CIRCUIT FOR FIGURE 3 = 3 V V O. VID Differential Input Voltage mv. VID VCC 6 Ω EMITTER OUTPUT TRANSFER CHARACTERISTIC TEST CIRCUIT FOR FIGURE 3 Figure 3 Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices. POST OFFICE BOX 633 DALLAS, TEXAS 76 7

8 TYPICAL CHARACTERISTICS OUTPUT RESPONSE FOR VARIOUS INPUT OVERDRIVES OUTPUT RESPONSE FOR VARIOUS INPUT OVERDRIVES Differential Input Voltage V O Voltage V 4 3 mv mv mv t Time ns VCC± = ± V RC = Ω V TA = C mv 3 3 Differential Input Voltage V O Voltage V 4 3 mv mv mv t Time ns VCC± = ± V RC = Ω V TA = C mv 3 3 Figure 4 Figure VCC + = V V Ω VID VO VCC = V TEST CIRCUIT FOR FIGURES 4 AND 8 POST OFFICE BOX 633 DALLAS, TEXAS 76

9 TYPICAL CHARACTERISTICS OUTPUT RESPONSE FOR VARIOUS INPUT OVERDRIVES OUTPUT RESPONSE FOR VARIOUS INPUT OVERDRIVES Differential Input Voltage V O Voltage V mv mv mv t Time ns VCC± = ± V RE = kω V TA = C mv Differential Input Voltage V O Voltage V mv mv mv mv t Time ns VCC± = ± V RE = kω V TA = C Figure 6 Figure 7 VCC + = V VID VO kω VCC = V TEST CIRCUIT FOR FIGURES 6 AND 7 POST OFFICE BOX 633 DALLAS, TEXAS 76 9

10 TYPICAL CHARACTERISTICS OUTPUT CURRENT AND DISSIPATION vs OUTPUT VOLTAGE POSITIVE SUPPLY CURRENT vs POSITIVE SUPPLY VOLTAGE I O Current ma VCC± = ± V t s VID = mv TA = C PO (right scale) IO (left scale) P O Dissipation mw ICC+ Positive Supply Current ma TA = C No Load VID = mv VID = mv VO Voltage V Positive Supply Voltage V Figure 8 Figure 9 I CC Negative Supply Current ma NEGATIVE SUPPLY CURRENT vs NEGATIVE SUPPLY VOLTAGE VID = mv or mv TA = C No Load VCC Negative Supply Voltage V Figure POST OFFICE BOX 633 DALLAS, TEXAS 76

11 APPLICATION INFORMATION Figure through Figure 9 show various applications for the LM, LM, and LM3 comparars. kω kω pf Square Wave (fanout two Series 4 gates or equivalent) 3 kω BALAE 3 kω BAL/ STRB kω 39 kω Figure. -khz Free-Running Multivibrar Figure. Offset Balancing Input kω TTL Strobe N VCC Figure 3. Strobing Figure 4. Zero-Crossing Detecr V Input 4 kω 8 kω TTL 47 kω 8 kω Resisr values shown are for a --3-V logic swing and a -V threshold. May be added control speed and reduce susceptibility noise spikes. Figure. TTL Interface With High-Level Logic POST OFFICE BOX 633 DALLAS, TEXAS 76

12 APPLICATION INFORMATION kω kω V khz pf 4. kω kω TTL kω. µf kω Magnetic Transducer Figure 6. Detecr for Magnetic Transducer Figure 7. -khz Crystal Oscillar From D/A Network kω Analog Input BALAE Input TIP3 Sample. µf N TTL Strobe Typical input current is pa with inputs strobed off. Figure 8. Comparar and Solenoid Driver Figure 9. Strobing Both Input and Stages Simultaneously 3.9 kω Ω VCC + = V 3 kω kω 3 kω N378 BALAE BAL/ STRB Input MOS +. µf kω N VCC = V Figure. Low-Voltage Adjustable Reference Supply Figure. Zero-Crossing Detecr Driving MOS Logic POST OFFICE BOX 633 DALLAS, TEXAS 76

13 APPLICATION INFORMATION 3.9 kω = V 3 kω N378 N94 N94 +. µf N Input From TTL N.7 kω N Ω. kω Adjust set clamp level Figure. Precision Squarer V = V TIL kω From TTL Gate Ω TTL kω. µf Figure 3. Digital Transmission Isolar VCC + = V Input kω TL8 MΩ VCC = V kω +. µf + Figure 4. Positive-Peak Detecr POST OFFICE BOX 633 DALLAS, TEXAS 76 3

14 VCC + = V APPLICATION INFORMATION Input MΩ TL8 kω kω + + µf VCC = V Figure. Negative-Peak Detecr 3.9 kω VCC + = V N378 N7 TTL N R 3 kω R sets the comparison level. At comparison, the phodiode has less than mv across it decreasing dark current by an order of magnitude. Figure 6. Precision Phodiode Comparar VCC + Inputs TTL Strobe N378 VCC Transient voltage and inductive kickback protection Figure 7. Relay Driver With Strobe 4 POST OFFICE BOX 633 DALLAS, TEXAS 76

15 APPLICATION INFORMATION VCC + 3 Ω 6 Ω TIP3 kω kω Input kω TIP9. µf 47 Ω 3 Ω 6 Ω VCC Figure 8. Switching Power Amplifier 39 kω 6 Ω 3 kω 6 Ω TIP3 Reference kω. µf VCC V+ 6 Ω TIP9 s Input Ω kω Ω 6 Ω TIP9 39 kω 3 kω VCC 6 Ω 6 Ω TIP3 Figure 9. Switching Power Amplifiers POST OFFICE BOX 633 DALLAS, TEXAS 76

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