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Details, datasheet, quote on part number:LF111
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| Part: | LF111 |
| Category: | Analog & Mixed-Signal Processing => Comparators => General Purpose |
| Description: | Voltage Comparator (discontinued) |
| Company: | National Semiconductor Corporation |
| Datasheet: | Download LF111 datasheet File size : 219 kB |
| Request For quote: | Find where to buy LF111
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Datasheet text preview:
LF111 LF211 LF311 Voltage Comparators
November 1994
LF111 LF211 LF311 Voltage Comparators
General Description
The LF111 LF211 and LF311 are FET input voltage comparators that virtually eliminate input current errors Designed to operate over a 5 0V to g 15V range the LF111 T can be used in the most critical applications he extremely low input currents of the LF111 allows the use of a simple comparator in applications usually requiring input current buffering Leakage testing long time delay circuits charge measurements and high source impedance voltage comparisons are easily done urther the LF111 can be used in place of the LM111 eliminating errors due to input currents See the ``application Fnts'' of the LM311 for application help hi
eatures
Y Y Y
F
Eliminates input current errors Interchangeable with LM111 No need for input current buffering
Schematic Diagram
Note Do Not Ground Strobe Pin or Balance Strobe Pin See Note 7
C
onnection Diagram
Metal Can Package
TL H 5703 2
TL H 5703 1
Top View Order Number LF111H LF111H-MIL or LF311H See NS Package Number H08C
C1995 National Semiconductor Corporation TL H 5703 RRD-B30M115 Printed in U S A
Absolute Maximum Ratings
p If Military Aerospace specified devices are required lease contact the National Semiconductor Sales ( Office Distributors for availability and specifications Note 8) Total Supply Voltage (V84) Output to Negative Supply Voltage (V74) Ground to Negative Supply Voltage (V14) Differential Input Voltage Input Voltage (Note 1) E Power Dissipation (Note 2) Output Short Circuit Duration LF111 LF211 36V 50V 30V
g 30V g 15V
LF111 LF211 Operating Temp R ange LF111 LF211 LF311 Storage Temp R ange
LF311
LF311 36V 40V 30V
g 30V g 15V
b 55 C to a 125 b 25 C to a 85
C C
0 C to a 70 C
b 65
C to a 150 C
b 65
C to a 150 C
500 mW 10 seconds
500 mW 10 seconds
Le(ad Temp 1 oldering S 0 seconds) ESD rating to be determined
260 C
260 C
lectrical Characteristics (LF111
Parameter Input Offset Voltage (Note 4) Input Offset Current (Note 4) Input Bias Current Voltage Gain Response Time (Note 5) Saturation Voltage Strobe On Current Output Leakage Current Input Offset Voltage (Note 4) Input Offset Current (Note 4) Input Bias Current Input Voltage Range Saturation Voltage Output Leakage Current Positive Supply Current Negative Supply Current
LF211) (Note 3) Conditions Min Typ 07 50 20 40 200 200 0 75 30 02 10 60 20 50
b 13 5
g 14
Max 40 25 50
Units mV pA pA V mV ns
TA e 25 C RS s 50k TA e 25 C VCM e 0 (Note 6) TA e 25 C VCM e 0 (Note 6) TA e 25 C TA e 25 C VINs b5 0 mV IOUT e 50 mA TA e 25 C TA e 25 C VINs5 0 mV VOUT e 35V TA e 25 C RS s 50k VS e g 15V VCM e 0 (Note 6) VS e g 15V VCM e 0 (Note 6)
15
V mA nA mV nA nA V V mA mA mA
30 70 13 0 04 05 60 50
V a t4 5V Vb e 0 VINs b6 0 mV IOUTs8 0 mA VINt5 0 mV VOUT e 35V TA e 25
0 23 01 51 41
C
TA e 25 C
Note 1 This rating applies for g 15V supplies The positive input voltage limit is 30V above the negative supply The negative input voltage limit is equal to the N negative supply voltage or 30V below the positive supply whichever is less d ote 2 The maximum junction temperature of the LF111 is a 150 C the LF211 is a 110 C and the LF311 is a 85 C For operating at elevated temperatures evices in the H08 package must be derated based on a thermal resistance of a 65 C W junction to ambient (in 400 linear feet min air flow) a165 C W junction N ambient (in static air) or a 20 C W junction to case to ote 3 These specifications apply for VS e g 15V and the Ground pin at ground and b 55 C s TA s a 125 C for the LF111 unless otherwise stated With the LF211 however all temperature specifications are limited to b 25 C s TA s g 85 C and for the LF311 0 C s TA s a 70 C The offset voltage offset current and bias Nurrent specifications apply for any supply voltage from a single 5 0V supply up to g 15V supplies c ote 4 The offset voltages and offset currents given are the maximum values required to drive the output within a volt of either supply with a 1 0 mA load Thus N these parameters define an error band and take into account the worst case effects of voltage gain and input impedance Note 5 The response time specified (see definitions) is for a 100 mV input step with 5 0 mV overdrive Note 6 For input voltages greater than 15V above the negative supply the bias and offset currents will increase see typical performance curves i ote 7 This specification gives the current that must be drawn from the strobe pin to ensure the output is properly disabled Do not short the strobe pin to ground N should be current driven at 3 to 5 mA t ote 8 Refer to RETSF111X for LF111H military specifications 2
Electrical Characteristics (LF311) (Note 3)
Parameter Input Offset Voltage (Note 4) Input Offset Current (Note 4) Input Bias Current Voltage Gain Response Time (Note 5) Saturation Voltage Strobe On Current Output Leakage Current Input Offset Voltage (Note 4) Input Offset Current (Note 4) Input Bias Current Input Voltage Range Saturation Voltage Positive Supply Current Negative Supply Current V a t4 5V Vb e 0 VINs b10 mV IOUTs8 0 mA TA e 25 Conditions TA e 25 C RSs50k TA e 25 C VCM e 0 (Note 6) TA e 25 C VCM e 0 (Note 6) TA e 25 C TA e 25 C VINs b10 mV IOUT e 50 mA TA e 25 C TA e 25 C VINt10mV VOUT e 35V TA e 25 C RSs50k VS e g 15V VCM e 0 (Note 6) VS e 15V VCM e 0 (Note 6) 10 30
a 14 b 13 5
Min
Typ 20 50 25 200 200 0 75 30 02
Max 10 75 150
Units mV pA pA V mV ns
15
V mA
10 15
nA mV nA nA V V
0 23 51 41
04 75 50
V mA mA
C
TA e 25 C
Note 1 This rating applies for g 15V supplies The positive input voltage limit is 30V above the negative supply The negative input voltage limit is equal to the N negative supply voltage or 30V below the positive supply whichever is less d ote 2 The maximum junction temperature of the LF111 is a 150 C the LF211 is a 110 C and the LF311 is a 85 C For operating at elevated temperatures Nevices in the H08 package must be derated based on a thermal resistance of a 165 C W junction to ambient or a 20 C W junction to case ote 3 These specifications apply for VS e g 15V and b 55 C s TA s a 125 C for the LF111 unless otherwise stated With the LF211 however all temperature specifications are limited to b 25 C s TA s a 85 C and for the LF311 0 C s TA s a 70 C The offset voltage offset current and bias current specifications apply for Nny supply voltage from a single 5 0 mV supply up to g 15V supplies a ote 4 The offset voltages and offset currents given are the maximum values required to drive the output within a volt of either supply with a 1 0 mA load Thus N these parameters define an error band and take into account the worst case effects of voltage gain and input impedance Note 5 The response time specified (see definitions) is for a 100 mV input step with 5 0 mV overdrive Note 6 For input voltages greater than 15V above the negative supply the bias and offset currents will increase see typical performance curves i ote 7 This specification gives the current that must be drawn from the strobe pin to ensure the output is properly disabled Do not short the strobe pin to ground Ahould be current driven at 3 to 5 mA ts
uxiliary Circuits
Offset Balancing Strobing
ncreasing Input Stage CuTrent r
L H 5703 15
Increases typical common mode slew from 7 0V ms to 18V ms
TL H 5703 13
TL H 5703 14
Note Do Not Ground Strobe Pin
I
3
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