Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLinear ICsLinear IC - Comparator Multi-purpose DTL, MOS, Open collector, Open emitter, RTL, TTL SOIC



   

SLCS143A − APRIL 2004 − REVISED APRIL 2008

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

D Qualified for Automotive Applications

D Fast Response Times

D Strobe Capability

D Maximum Input Bias Current . . . 150 nA

D Maximum Input Offset Current . . . 20 nA

D Can Operate From Single 5-V Supply

description/ordering information

The LM211 is a single high-speed voltage comparator. This device is designed to operate from a wide range

of power-supply voltages, including ±15-V supplies for operational amplifiers and 5-V supplies for logic systems.

The output levels are compatible with most TTL and MOS circuits. This comparator is capable of driving lamps

or relays and switching voltages up to 50 V at 50 mA. All inputs and outputs can be isolated from system ground.

The outputs can drive loads referenced to 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 is in the off state, regardless

of the differential input.

ORDERING INFORMATION

{

max

AT 25°C

PACKAGE

†

ORDERABLE

PART NUMBER

TOP-SIDE

MARKING

−40°C to 125°C 3 mV SOIC (D) Reel of 2500 LM211QDRQ1 LM211Q1

†

For the most current package and ordering information, see the Package Option Addendum at the end of this document,

or see the TI web site at http://www.ti.com.

‡

Package drawings, thermal data, and symbolization are available at http://www.ti.com/packaging.

functional block diagram

BAL/STRB

COL OUT

IN−

IN+

BALANCE

EMIT OUT

−

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

    !"#   $"%&! '#(

'"! !  $#!! $# )# #  #* "#

'' +,( '"! $!#- '#  #!#&, !&"'#

#-  && $##(

EMIT OUT

IN+

IN−

CC−

CC+

COL OUT

BAL/STRB

BALANCE

D PACKAGE

(TOP VIEW)

Summary of content (20 pages)

PAGE 1
SLCS143A − APRIL 2004 − REVISED APRIL 2008 D D D D D D Qualified for Automotive Applications Fast Response Times Strobe Capability Maximum Input Bias Current . . . 150 nA Maximum Input Offset Current . . . 20 nA Can Operate From Single 5-V Supply D PACKAGE (TOP VIEW) EMIT OUT IN+ IN− VCC− 1 8 2 7 3 6 4 5 VCC+ COL OUT BAL/STRB BALANCE description/ordering information The LM211 is a single high-speed voltage comparator.
PAGE 2
SLCS143A − APRIL 2004 − REVISED APRIL 2008 schematic Component Count Resistors Diodes EPI FET Transistors BAL/STRB BALANCE 450 Ω 450 Ω 20 2 1 22 VCC+ 2.4 kΩ 750 Ω 2.4 kΩ 600 Ω 70 Ω 1.2 kΩ IN+ 1.2 kΩ 4 kΩ COL OUT IN− 400 Ω 130 Ω 60 Ω 450 Ω 250 Ω 600 Ω 200 Ω 2 kΩ 4Ω EMIT OUT VCC− All resistor values shown are nominal.
PAGE 3
SLCS143A − APRIL 2004 − REVISED APRIL 2008 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage: VCC+ (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 V VCC− (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −18 V VCC+ − VCC− . . . . . . . . . . . . . .
PAGE 4
SLCS143A − APRIL 2004 − REVISED APRIL 2008 electrical characteristics at specified free-air temperature, VCC± = ±15 V (unless otherwise noted) PARAMETER TA† TEST CONDITIONS MIN 25°C VIO Input offset voltage See Note 7 IIO Input offset current See Note 7 IIB Input bias current VO = 1 V to 14 V IIL(S) Low-level strobe current (see Note 8) V(strobe) = 0.
PAGE 5
SLCS143A − APRIL 2004 − REVISED APRIL 2008 TYPICAL CHARACTERISTICS INPUT OFFSET CURRENT vs FREE-AIR TEMPERATURE 20 500 VCC± = ±15 V VO = 1 V to 14 V See Note A 18 16 14 12 10 Condition 1 Condition 2 8 6 4 VCC± = ±15 V VO = 1 V to 14 V See Note A 450 I IB − Input Bias Current − nA I IO − Input Offset Current − nA INPUT BIAS CURRENT vs FREE-AIR TEMPERATURE 400 350 300 Condition 2 250 200 150 Condition 1 100 2 50 0 −60 −40 −20 0 20 40 60 80 100 120
PAGE 6
SLCS143A − APRIL 2004 − REVISED APRIL 2008 TYPICAL CHARACTERISTICS VCC+ = 30 V VI = 50 V 1 kΩ VOLTAGE TRANSFER CHARACTERISTICS 60 50 Output VCC+ = 30 V VCC− = 0 TA = 25°C VID VO − Output Voltage − V VCC− 40 30 Emitter Output RL = 600 Ω COLLECTOR OUTPUT TRANSFER CHARACTERISTIC TEST CIRCUIT FOR FIGURE 3 Collector Output RL = 1 kΩ VCC+ = 30 V 20 VID 10 Output 600 Ω 0 −1 VCC− −0.5 0 0.
PAGE 7
SLCS143A − APRIL 2004 − REVISED APRIL 2008 TYPICAL CHARACTERISTICS Differential Input Voltage OUTPUT RESPONSE FOR VARIOUS INPUT OVERDRIVES 100 mV VCC± = ±15 V RC = 500 Ω to 5 V TA = 25°C 5 VO − Output Voltage − V VO − Output Voltage − V Differential Input Voltage OUTPUT RESPONSE FOR VARIOUS INPUT OVERDRIVES 4 3 2 5 mV 2 mV 20 mV 1 0 0 50 100 150 200 250 300 100 mV VCC± = ±15 V RC = 500 Ω to 5 V TA = 25°C 5 4 20 mV 3 2 0 350 2 mV 5 mV 1 0 50
PAGE 8
SLCS143A − APRIL 2004 − REVISED APRIL 2008 TYPICAL CHARACTERISTICS 100 mV VCC± = ±15 V RE = 2 kΩ to −15 V TA = 25°C 10 5 mV 5 2 mV 0 −5 −10 −15 0 100 mV VCC± = ±15 V RE = 2 kΩ to −15 V TA = 25°C 15 20 mV VO − Output Voltage − V VO − Output Voltage − V 15 OUTPUT RESPONSE FOR VARIOUS INPUT OVERDRIVES Differential Input Voltage Differential Input Voltage OUTPUT RESPONSE FOR VARIOUS INPUT OVERDRIVES 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.
PAGE 9
SLCS143A − APRIL 2004 − REVISED APRIL 2008 TYPICAL CHARACTERISTICS OUTPUT CURRENT AND DISSIPATION vs OUTPUT VOLTAGE 700 600 PO (right scale) 100 500 80 400 60 300 40 200 I CC+ − Positive Supply Current − mA 120 TA = 25°C No Load PO − Output Dissipation − mW 140 6 800 VCC± = ±15 V t ≤ 10 s VID = −10 mV TA = 25°C IO (left scale) 20 100 0 0 5 0 15 10 5 VID = −10 mV 4 3 VID = 10 mV 2 1 0 0 VO − Output Voltage − V 5 10 15 VCC+ − Positive
PAGE 10
SLCS143A − APRIL 2004 − REVISED APRIL 2008 APPLICATION INFORMATION Figure 11 through Figure 29 show various applications for the LM211 comparator. VCC+ 3 kΩ 3 kΩ VCC+ 20 kΩ 1 kΩ Square Wave Output (fanout to two Series 54 gates, or equivalent) 10 kΩ 1200 pF 20 kΩ BALANCE 39 kΩ BAL/ STRB NOTE: If offset balancing is not used, the BALANCE and BAL/STRB pins should be shorted together. Figure 12. Offset Balancing Figure 11.
PAGE 11
SLCS143A − APRIL 2004 − REVISED APRIL 2008 APPLICATION INFORMATION 5V 1 kΩ 82 kΩ 240 kΩ Input† Output to TTL ‡ 47 kΩ 82 kΩ † Resistor values shown are for a 0- to 30-V logic swing and a 15-V threshold. ‡ May be added to control speed and reduce susceptibility to noise spikes Figure 15. TTL Interface With High-Level Logic VCC+ 100 kΩ 5V 4.5 kΩ 2 kΩ 100 kHz 10 pF 2 kΩ Output Output to TTL 100 kΩ 1 kΩ 0.1 µF 50 kΩ Magnetic Transducer Figure 16.
PAGE 12
SLCS143A − APRIL 2004 − REVISED APRIL 2008 APPLICATION INFORMATION From D/A Network VCC+ VCC+ Output Analog Input† 22 kΩ BALANCE BAL/STRB 0.1 µF Input TTL Strobe 2N2222 Sample 1 kΩ † Typical input current is 50 pA with inputs strobed off. Figure 18. Comparator and Solenoid Driver Figure 19. Strobing Both Input and Output Stages Simultaneously VCC+ VCC+ = 5 V 3 kΩ 500 Ω 3.9 kΩ 10 kΩ 3 kΩ Output 2N3708 BALANCE BAL/ STRB Output to MOS Input + 1 kΩ 1.
PAGE 13
SLCS143A − APRIL 2004 − REVISED APRIL 2008 APPLICATION INFORMATION VCC+ = 5 V 3.9 kΩ 30 kΩ† 1 kΩ 2N3708 1 kΩ 1N914 Output + 2N2222 1N914 Input From TTL 2N2222 1.5 µF 2.7 kΩ 510 Ω 2N2222 2.2 kΩ † Adjust to set clamp level Figure 22. Precision Squarer VCC+ = 5 V 5V Opto Isolator From TTL Gate 5 kΩ 1 kΩ TTL Output 100 Ω 1 kΩ 50 kΩ 0.01 µF 1 kΩ Figure 23.
PAGE 14
SLCS143A − APRIL 2004 − REVISED APRIL 2008 APPLICATION INFORMATION VCC+ = 15 V 1 MΩ TL081 10 kΩ 2 kΩ + Input Output − + 15 µF VCC− = −15 V Figure 25. Negative-Peak Detector VCC+ = 5 V 3.9 kΩ 1N2175 2N3708 1 kΩ Output to TTL 2N2222 R1† 30 kΩ † R1 sets the comparison level. At comparison, the photodiode has less than 5 mV across it, decreasing dark current by an order of magnitude. Figure 26.
PAGE 15
SLCS143A − APRIL 2004 − REVISED APRIL 2008 APPLICATION INFORMATION VCC+ 620 Ω BAL/STRB 300 Ω 1 100 kΩ 100 kΩ Output BAL/STRB 2 10 kΩ Input 0.1 µF 300 Ω 47 Ω 620 Ω VCC− Figure 28. Switching Power Amplifier VCC+ 39 kΩ 620 Ω 300 kΩ 620 Ω BAL/STRB 1 15 kΩ Reference VCC− 0.22 µF 620 Ω V+ Outputs 510 Ω 15 kΩ 510 Ω Input 620 Ω BAL/STRB 2 VCC− 39 kΩ 300 kΩ 620 Ω 620 Ω Figure 29.
PAGE 16
PACKAGE OPTION ADDENDUM www.ti.
PAGE 17
PACKAGE OPTION ADDENDUM www.ti.
PAGE 18
PAGE 19
PAGE 20
IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.