© 2005 Fairchild Semiconductor Corporation DS400294 www.fairchildsemi.com
August 2000
Revised October 2005
KA311 Single Compar ator
KA311
Single Comparator
General Description
The KA31 1 series is a monolithic, low input current voltage com-
parator. The device is also designed to operate from dual or sin-
gle supply voltage.
Features
O
Low Input Bias Current: 250nA (Max)
O
Low Input Offset Current: 50nA (Max)
O
Diff erential Input Voltage:
r
30V
O
Power Supply Voltage:
Single 5.0V to 30V or 15V Split Supplies (
r
15V)
O
Offset Vo ltage Null Capability
O
Strobe Capability
Ordering Information:
Internal Block Diagram
Product Number Package Operating Temperature
KA311 8-DIP 0
a
70
q
C
KA311DTF 8-SOP
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KA311
Schematic Diagram
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KA311
Absolute Maximum Ratings(Note 1)
Note 1: The “Absolute Maximum Ratings” are those val ues beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The
parame tric value s defin ed i n the Electr i cal Char acter isti cs t ables a re n ot gu aran teed at the absolute maximum ra tings. T he “Recom mended Operating Conditions” t able will define
the conditions for actual device operation.
Electrical Characteristics (VCC = 15V, VEE =
15V, TA = 25
q
C, unless otherwise specified)
Note 2: 0
d
TA
70
q
C.
Note 3: The response time specified is for a 100mV input step with 5mV over drive.
Parameter Symbol Value Unit
Tota l S u pp ly Voltage VCC
|VEE|36 V
Output to Negative Supply Voltage KA311 VO - VEE 40 V
Ground to Negative voltage VEE
30 V
Diff erential Input Voltage VI(DIFF) 30 V
Input Voltage VI15 V
Output Short Circuit Duration – 10 sec.
Power Dissipation PD500 mW
Operating Temperature Range TOPR 0
a
70
q
C
Storage Temperature Range TSTG
65
a
150
q
C
Parameter Symbol Conditions Min Typ Max Unit
Input Offset Voltage VIO RS
d
50k
:
–1.07.5
mV
(Note 2) – – 10.0
Input Offset Current IIO – 6.0 50.0 nA
(Note 2) – – 70.0
Input Bias Current IBIAS – 100 250 nA
(Note 2) – – 300
Voltage Gain GV40.0 200 – V/mV
Response Time tRES (Note 3) – 200 – ns
Saturation Voltage VSAT IO = 50mA, VI
d
10mV – 0.75 1.5 V
VCC
t
4.5V, VEE = 0V, IO = 8mA, VI
d
10mV (Note 2) – 0.23 0.4
Strobe “ON” Current ISTR(ON) –3.0–mA
Output Leakage Current ISINK ISTR = 3mA, VI
t
10mV, VO = 15V, VCC =
r
15V – 0.2 50.0 nA
Input Voltage Range VI(R) (Note 2)
14.5 to 13.0
14.7 to 13.8 – V
Positive Supply Current ICC –3.07.5mA
Negative Supply Current IEE –
2.2
5.0 mA
Strobe Current ISTR –3.0–mA
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KA311
Typical Performance Characteristics
FIGURE 1. Input Bias Current vs. Temperature FIGURE 2. Input Offset Curr ent vs. Temperature
FIGURE 3. Offset Voltage vs. Input Resistance FIGURE 4. Input Bias Current vs. Differential Input Voltage
FIGURE 5. Common Mode Limits vs. Temperature FIGURE 6. Output Voltage vs. Differential Input Voltage
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KA311
Typical Performance Characteristics (Continued)
FIGURE 7. Saturation Voltage vs. Current FIGURE 8. Supply Current vs. Temperature
FIGURE 9. Leakage Current vs. Temp erature FIGURE 10. Supply Current vs. Supply Voltage
FIGURE 11. Current Saturation Voltage FIGURE 12. Output Limiting Characteristics
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KA311
Physical Dimensions inches (millimeters) unless otherwise noted
8-Lead Dual-In-Line Package
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KA311
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
8-Lead Small Outline Package
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KA311 Single Comparator
DISCLAIMER
FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY
PRODUCTS HEREIN TO IMPROVE RELIA BI L ITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY
ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT
CONVEY ANY LICENSE UNDER ITS PA TENT RIGHTS, NOR THE RIGHTS OF OTHERS.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES
OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR CORPORATION
As used herein:
1. Life support devices or systems are devices or syste ms
which, (a) are intended for surgical implant into the body, or
(b) support or sustain life, or (c) whose failure to perform
when properly used in accordance with instructions for use
provided in the labeling, can be reasonably expected to
result in significant injury to the user.
2. A critical component is any component of a life support
device or sys tem whose failure to perform can be reason-
ably expected to cause the failure of the life support device
or system, or to affect its safety or effectiveness.
PRODUCT STATUS DEFINITIONS
Definition of terms
Datasheet Identification Product Status Definition
Advance Information Formativ e or In Design This datasheet contains the design specifications for product develop-
ment. Specifications may change in any manner without notice.
Preliminary First Production This datasheet contains preliminary data, and supplementary data will
be published at a later date. Fairchild Semiconductor reserves the right
to make changes at any time without notice in order to improve design.
No Identification Needed Full Production This datasheet contains final specifications. Fairchild Semiconducto r
reserves the right to make changes at any time without notice in order
to improve design.
Obsolete Not In Production This datasheet contains specifications on a product that has been dis-
continued by Fairchild Semiconductor . The datasheet is printed for ref-
erence information only.
