LM6142, LM6144
www.ti.com
SNOS726D – JUNE 2000 – REVISED MARCH 2013
LM6142/LM6144 17 MHz Rail-to-Rail Input-Output Operational Amplifiers
Check for Samples: LM6142, LM6144
FEATURES
DESCRIPTION
1
At VS = 5V. Typ Unless Noted.
2
•
•
•
•
•
•
•
•
•
Rail-to-rail Input CMVR −0.25V to 5.25V
Rail-to-Rail Output Swing 0.005V to 4.995V
Wide Gain-Bandwidth: 17MHz at 50kHz (typ)
Slew Rate:
–
Small Signal, 5V/μs
–
Large Signal, 30V/μs
Low Supply Current 650μA/Amplifier
Wide Supply Range 1.8V to 24V
CMRR 107dB
Gain 108dB with RL = 10k
PSRR 87dB
APPLICATIONS
•
•
•
•
•
Battery Operated Instrumentation
Depth Sounders/Fish Finders
Barcode Scanners
Wireless Communications
Rail-to-Rail in-out Instrumentation Amps
Using patent pending new circuit topologies, the
LM6142/LM6144 provides new levels of performance
in applications where low voltage supplies or power
limitations previously made compromise necessary.
Operating on supplies of 1.8V to over 24V, the
LM6142/LM6144 is an excellent choice for battery
operated systems, portable instrumentation and
others.
The greater than rail-to-rail input voltage range
eliminates concern over exceeding the commonmode voltage range. The rail-to-rail output swing
provides the maximum possible dynamic range at the
output. This is particularly important when operating
on low supply voltages.
High gain-bandwidth with 650μA/Amplifier supply
current opens new battery powered applications
where previous higher power consumption reduced
battery life to unacceptable levels. The ability to drive
large capacitive loads without oscillating functionally
removes this common problem.
Connection Diagrams
Figure 1. 8-Pin CDIP
Top View
Figure 2. 8-Pin PDIP/SOIC
Top View
Figure 3. 14-Pin PDIP/SOIC
Top View
1
2
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.
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2000–2013, Texas Instruments Incorporated
LM6142, LM6144
SNOS726D – JUNE 2000 – REVISED MARCH 2013
www.ti.com
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
Absolute Maximum Ratings (1) (2)
ESD Tolerance (3)
2500V
Differential Input Voltage
15V
(V+) + 0.3V, (V−) − 0.3V
Voltage at Input/Output Pin
Supply Voltage (V+ − V−)
35V
Current at Input Pin
±10mA
Current at Output Pin (4)
±25mA
Current at Power Supply Pin
50mA
Lead Temperature (soldering, 10 sec)
260°C
−65°C to +150°C
Storage Temp. Range
Junction Temperature
(1)
(2)
(3)
(4)
(5)
(5)
150°C
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for
which the device is intended to be functional, but specific performance is not guaranteed. For guaranteed specifications and the test
conditions, see the Electrical Characteristics.
If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and
specifications.
Human body model, 1.5kΩ in series with 100pF.
Applies to both single-supply and split-supply operation. Continuous short circuit operation at elevated ambient temperature can result in
exceeding the maximum allowed junction temperature of 150°C.
The maximum power dissipation is a function of TJ(MAX), θJA, and TA. The maximum allowable power dissipation at any ambient
temperature is PD = (TJ(MAX) − TA)/θJA. All numbers apply for packages soldered directly into a PC board.
Operating Ratings (1)
1.8V ≤ V+ ≤ 24V
Supply Voltage
−40°C ≤ TA ≤ +85°C
Temperature Range LM6142, LM6144
Thermal Resistance (θJA)
P Package, 8-Pin PDIP
115°C/W
D Package, 8-Pin SOIC
193°C/W
NFF Package, 14-Pin PDIP
81°C/W
D Package, 14-Pin SOIC
(1)
126°C/W
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for
which the device is intended to be functional, but specific performance is not guaranteed. For guaranteed specifications and the test
conditions, see the Electrical Characteristics.
5.0V DC Electrical Characteristics (1)
Unless otherwise specified, all limits guaranteed for TA = 25°C, V+ = 5.0V, V− = 0V, VCM = VO = V+/2 and RL > 1 MΩ to V+/2.
Boldface limits apply at the temperature extremes.
Typ (2)
LM6144AI
LM6142AI
Limit (3)
LM6144BI
LM6142BI
Limit (3)
Units
Input Offset Voltage
0.3
1.0
2.5
mV
2.2
3.3
TCVOS
Input Offset Voltage
Average Drift
3
IB
Input Bias Current
Symbol
Parameter
VOS
Conditions
0V ≤ VCM ≤ 5V
170
250
180
280
526
(1)
(2)
(3)
2
max
μV/°C
300
nA
max
526
Electrical Table values apply only for factory testing conditions at the temperature indicated. Factory testing conditions result in very
limited self-heating of the device such that TJ = TA. No guarantee of parametric performance is indicated in the electrical tables under
conditions of the internal self heating where TJ > TA.
Typical values represent the most likely parametric norm.
All limits are guaranteed by testing or statistical analysis.
Submit Documentation Feedback
Copyright © 2000–2013, Texas Instruments Incorporated
Product Folder Links: LM6142 LM6144
LM6142, LM6144
www.ti.com
SNOS726D – JUNE 2000 – REVISED MARCH 2013
5.0V DC Electrical Characteristics(1) (continued)
Unless otherwise specified, all limits guaranteed for TA = 25°C, V+ = 5.0V, V− = 0V, VCM = VO = V+/2 and RL > 1 MΩ to V+/2.
Boldface limits apply at the temperature extremes.
Symbol
Parameter
IOS
Input Offset Current
RIN
Input Resistance, CM
CMRR
Common Mode
Rejection Ratio
Conditions
Power Supply
Rejection Ratio
0V ≤ VCM ≤ 4V
5V ≤ V+ ≤ 24V
LM6144BI
LM6142BI
Limit (3)
3
30
30
nA
80
80
max
107
Input Common-Mode
Voltage Range
AV
Large Signal
Voltage Gain
RL = 10k
Output Swing
RL = 100k
MΩ
84
78
78
82
66
66
79
64
64
87
80
80
78
78
0
0
5.25
5.0
5.0
270
100
80
V/mV
70
33
25
min
0.005
4.995
RL = 10k
4.90
ISC
Output Short
Circuit Current
LM6142
Sourcing
13
V
0.01
0.01
V
0.013
max
4.98
4.98
V
4.93
4.93
0.02
0.06
dB
min
0.013
min
V max
4.97
RL = 2k
Units
84
−0.25
VCM
VO
LM6144AI
LM6142AI
Limit (3)
126
0V ≤ VCM ≤ 5V
PSRR
Typ (2)
V min
0.1
0.1
V
0.133
0.133
max
4.86
4.86
V
4.80
4.80
min
10
8
mA
4.9
4
min
35
35
mA
10
10
mA
5.3
5.3
min
35
35
mA
6
6
mA
3
3
min
35
35
max
Sinking
24
max
ISC
Output Short
Circuit Current
LM6144
Sourcing
8
mA
max
Sinking
22
8
8
mA
4
4
min
35
35
mA
max
IS
Supply Current
Per Amplifier
650
800
800
μA
880
880
max
Submit Documentation Feedback
Copyright © 2000–2013, Texas Instruments Incorporated
Product Folder Links: LM6142 LM6144
3
LM6142, LM6144
SNOS726D – JUNE 2000 – REVISED MARCH 2013
www.ti.com
5.0V AC Electrical Characteristics (1)
Unless Otherwise Specified, All Limits Guaranteed for TA = 25°C, V+ = 5.0V, V− = 0V, VCM = VO = V+/2 and RL > 1 MΩ to V+/2.
Boldface limits apply at the temperature extremes.
Symbol
Parameter
Conditions
SR
Slew Rate
8 VPP @ V+ 12V
Typ (2)
LM6144AI
LM6142AI
Limit (3)
LM6144BI
LM6142BI
Limit (3)
25
15
13
13
11
min
10
10
MHz
6
6
RS > 1 kΩ
f = 50 kHz
V/μs
GBW
Gain-Bandwidth Product
φm
Phase Margin
38
Deg
Amp-to-Amp Isolation
130
dB
16
nV
√Hz
0.22
pA
√Hz
0.003
%
en
Input-Referred
Voltage Noise
f = 1 kHz
in
Input-Referred
Current Noise
f = 1 kHz
T.H.D.
Total Harmonic Distortion
f = 10 kHz, RL = 10 kΩ,
(1)
17
Units
min
Electrical Table values apply only for factory testing conditions at the temperature indicated. Factory testing conditions result in very
limited self-heating of the device such that TJ = TA. No guarantee of parametric performance is indicated in the electrical tables under
conditions of the internal self heating where TJ > TA.
Typical values represent the most likely parametric norm.
All limits are guaranteed by testing or statistical analysis.
(2)
(3)
2.7V DC Electrical Characteristics (1)
Unless Otherwise Specified, All Limits Guaranteed for TA = 25°C, V+ = 2.7V, V− = 0V, VCM = VO = V+/2 and RL > 1 MΩ to V+/2.
Boldface limits apply at the temperature extreme
Symbol
VOS
Parameter
Conditions
Input Offset Voltage
IB
Input Bias Current
LM6144AI
LM6142AI
Limit (3)
LM6144BI
LM6142BI
Limit (3)
0.4
1.8
2.5
mV
4.3
5
max
250
300
nA
526
526
max
30
30
nA
80
80
max
150
IOS
Input Offset Current
RIN
Input Resistance
CMRR
Common Mode
Rejection Ratio
PSRR
Power Supply
Rejection Ratio
VCM
Input Common-Mode
Voltage Range
AV
Large Signal
Voltage Gain
RL = 10k
Output Swing
RL = 100kΩ
VO
Typ (2)
4
128
MΩ
0V ≤ VCM ≤ 1.8V
90
0V ≤ VCM ≤ 2.7V
76
dB
min
3V ≤ V+ ≤ 5V
79
−0.25
0
0
V min
2.95
2.7
2.7
V max
55
(2)
(3)
4
V/mV
min
0.019
2.67
(1)
Units
0.08
0.08
V
0.112
0.112
max
2.66
2.66
V
2.25
2.25
min
Electrical Table values apply only for factory testing conditions at the temperature indicated. Factory testing conditions result in very
limited self-heating of the device such that TJ = TA. No guarantee of parametric performance is indicated in the electrical tables under
conditions of the internal self heating where TJ > TA.
Typical values represent the most likely parametric norm.
All limits are guaranteed by testing or statistical analysis.
Submit Documentation Feedback
Copyright © 2000–2013, Texas Instruments Incorporated
Product Folder Links: LM6142 LM6144
LM6142, LM6144
www.ti.com
SNOS726D – JUNE 2000 – REVISED MARCH 2013
2.7V DC Electrical Characteristics(1) (continued)
Unless Otherwise Specified, All Limits Guaranteed for TA = 25°C, V+ = 2.7V, V− = 0V, VCM = VO = V+/2 and RL > 1 MΩ to V+/2.
Boldface limits apply at the temperature extreme
Symbol
IS
Parameter
Supply Current
Conditions
Per Amplifier
Typ (2)
LM6144AI
LM6142AI
Limit (3)
LM6144BI
LM6142BI
Limit (3)
510
800
800
μA
880
880
max
Units
2.7V AC Electrical Characteristics (1)
Unless Otherwise Specified, All Limits Guaranteed for TA = 25°C, V+ = 2.7V, V− = 0V, VCM = VO = V+/2 and RL > 1 MΩ to V+/2.
Boldface limits apply at the temperature extreme
Symbol
Parameter
Conditions
GBW
Gain-Bandwidth Product
f = 50 kHz
φm
Gm
(1)
(2)
(3)
Typ (2)
LM6144AI
LM6142AI
Limit (3)
LM6144BI
LM6142BI
Limit (3)
Units
9
MHz
Phase Margin
36
Deg
Gain Margin
6
dB
Electrical Table values apply only for factory testing conditions at the temperature indicated. Factory testing conditions result in very
limited self-heating of the device such that TJ = TA. No guarantee of parametric performance is indicated in the electrical tables under
conditions of the internal self heating where TJ > TA.
Typical values represent the most likely parametric norm.
All limits are guaranteed by testing or statistical analysis.
24V Electrical Characteristics (1)
Unless Otherwise Specified, All Limits Guaranteed for TA = 25°C, V+ = 24V, V− = 0V, VCM = VO = V+/2 and RL > 1 MΩ to V+/2.
Boldface limits apply at the temperature extreme
Typ (2)
LM6144AI
LM6142AI
Limit (3)
LM6144BI
LM6142BI
Limit (3)
Units
Input Offset Voltage
1.3
2
3.8
mV
4.8
4.8
max
IB
Input Bias Current
174
nA
max
IOS
Input Offset Current
5
nA
max
RIN
Input Resistance
288
MΩ
CMRR
Common Mode
Rejection Ratio
0V ≤ VCM ≤ 23V
114
0V ≤ VCM ≤ 24V
100
dB
min
PSRR
Power Supply
Rejection Ratio
0V ≤ VCM ≤ 24V
87
VCM
Input Common-Mode
Voltage Range
AV
Large Signal
Voltage Gain
RL = 10k
500
VO
Output Swing
RL = 10 kΩ
0.07
Symbol
Parameter
VOS
Conditions
−0.25
0
0
V min
24.25
24
24
V max
23.85
(1)
(2)
(3)
V/mV
min
0.15
0.15
V
0.185
0.185
max
23.81
23.81
V
23.62
23.62
min
Electrical Table values apply only for factory testing conditions at the temperature indicated. Factory testing conditions result in very
limited self-heating of the device such that TJ = TA. No guarantee of parametric performance is indicated in the electrical tables under
conditions of the internal self heating where TJ > TA.
Typical values represent the most likely parametric norm.
All limits are guaranteed by testing or statistical analysis.
Submit Documentation Feedback
Copyright © 2000–2013, Texas Instruments Incorporated
Product Folder Links: LM6142 LM6144
5
LM6142, LM6144
SNOS726D – JUNE 2000 – REVISED MARCH 2013
www.ti.com
24V Electrical Characteristics(1) (continued)
Unless Otherwise Specified, All Limits Guaranteed for TA = 25°C, V+ = 24V, V− = 0V, VCM = VO = V+/2 and RL > 1 MΩ to V+/2.
Boldface limits apply at the temperature extreme
Symbol
Parameter
Conditions
Typ (2)
LM6144AI
LM6142AI
Limit (3)
LM6144BI
LM6142BI
Limit (3)
IS
Supply Current
Per Amplifier
750
1100
1100
μA
1150
1150
max
GBW
6
Gain-Bandwidth Product
f = 50 kHz
18
Submit Documentation Feedback
Units
MHz
Copyright © 2000–2013, Texas Instruments Incorporated
Product Folder Links: LM6142 LM6144
LM6142, LM6144
www.ti.com
SNOS726D – JUNE 2000 – REVISED MARCH 2013
Typical Performance Characteristics
TA = 25°C, RL = 10 kΩ Unless Otherwise Specified
Supply Current vs. Supply Voltage
Offset Voltage vs. Supply Voltage
Figure 4.
Figure 5.
Bias Current vs. Supply Voltage
Offset Voltage vs. VCM
Figure 6.
Figure 7.
Offset Voltage vs. VCM
Offset Voltage vs. VCM
Figure 8.
Figure 9.
Submit Documentation Feedback
Copyright © 2000–2013, Texas Instruments Incorporated
Product Folder Links: LM6142 LM6144
7
LM6142, LM6144
SNOS726D – JUNE 2000 – REVISED MARCH 2013
www.ti.com
Typical Performance Characteristics (continued)
TA = 25°C, RL = 10 kΩ Unless Otherwise Specified
8
Bias Current vs. VCM
Bias Current vs. VCM
Figure 10.
Figure 11.
Bias Current vs. VCM
Open-Loop Transfer Function
Figure 12.
Figure 13.
Open-Loop Transfer Function
Open-Loop Transfer Function
Figure 14.
Figure 15.
Submit Documentation Feedback
Copyright © 2000–2013, Texas Instruments Incorporated
Product Folder Links: LM6142 LM6144
LM6142, LM6144
www.ti.com
SNOS726D – JUNE 2000 – REVISED MARCH 2013
Typical Performance Characteristics (continued)
TA = 25°C, RL = 10 kΩ Unless Otherwise Specified
Output Voltage vs. Source Current
Output Voltage vs. Source Current
Figure 16.
Figure 17.
Output Voltage vs. Source Current
Output Voltage vs. Sink Current
Figure 18.
Figure 19.
Output Voltage vs. Sink Current
Output Voltage vs. Sink Current
Figure 20.
Figure 21.
Submit Documentation Feedback
Copyright © 2000–2013, Texas Instruments Incorporated
Product Folder Links: LM6142 LM6144
9
LM6142, LM6144
SNOS726D – JUNE 2000 – REVISED MARCH 2013
www.ti.com
Typical Performance Characteristics (continued)
TA = 25°C, RL = 10 kΩ Unless Otherwise Specified
10
Gain and Phase vs. Load
Gain and Phase vs. Load
Figure 22.
Figure 23.
Distortion + Noise vs. Frequency
GBW vs. Supply
Figure 24.
Figure 25.
Open Loop Gain vs. Load, 3V Supply
Open Loop Gain vs. Load, 5V Supply
Figure 26.
Figure 27.
Submit Documentation Feedback
Copyright © 2000–2013, Texas Instruments Incorporated
Product Folder Links: LM6142 LM6144
LM6142, LM6144
www.ti.com
SNOS726D – JUNE 2000 – REVISED MARCH 2013
Typical Performance Characteristics (continued)
TA = 25°C, RL = 10 kΩ Unless Otherwise Specified
Open Loop Gain vs. Load, 24V Supply
Unity Gain Frequency vs. VS
Figure 28.
Figure 29.
CMRR vs. Frequency
Crosstalk vs. Frequency
Figure 30.
Figure 31.
PSRR vs. Frequency
Noise Voltage vs. Frequency
Figure 32.
Figure 33.
Submit Documentation Feedback
Copyright © 2000–2013, Texas Instruments Incorporated
Product Folder Links: LM6142 LM6144
11
LM6142, LM6144
SNOS726D – JUNE 2000 – REVISED MARCH 2013
www.ti.com
Typical Performance Characteristics (continued)
TA = 25°C, RL = 10 kΩ Unless Otherwise Specified
12
Noise Current vs. Frequency
NF vs. RSource
Figure 34.
Figure 35.
Submit Documentation Feedback
Copyright © 2000–2013, Texas Instruments Incorporated
Product Folder Links: LM6142 LM6144
LM6142, LM6144
www.ti.com
SNOS726D – JUNE 2000 – REVISED MARCH 2013
LM6142/LM6144 APPLICATION IDEAS
The LM6142 brings a new level of ease of use to op amp system design.
With greater than rail-to-rail input voltage range concern over exceeding the common-mode voltage range is
eliminated.
Rail-to-rail output swing provides the maximum possible dynamic range at the output. This is particularly
important when operating on low supply voltages.
The high gain-bandwidth with low supply current opens new battery powered applications, where high power
consumption, previously reduced battery life to unacceptable levels.
To take advantage of these features, some ideas should be kept in mind.
ENHANCED SLEW RATE
Unlike most bipolar op amps, the unique phase reversal prevention/speed-up circuit in the input stage causes the
slew rate to be very much a function of the input signal amplitude.
Figure 36 shows how excess input signal, is routed around the input collector-base junctions, directly to the
current mirrors.
The LM6142/LM6144 input stage converts the input voltage change to a current change. This current change
drives the current mirrors through the collectors of Q1–Q2, Q3–Q4 when the input levels are normal.
Figure 36.
If the input signal exceeds the slew rate of the input stage, the differential input voltage rises above two diode
drops. This excess signal bypasses the normal input transistors, (Q1–Q4), and is routed in correct phase through
the two additional transistors, (Q5, Q6), directly into the current mirrors.
This rerouting of excess signal allows the slew-rate to increase by a factor of 10 to 1 or more. (See Figure 37.)
As the overdrive increases, the op amp reacts better than a conventional op amp. Large fast pulses will raise the
slew- rate to around 30V to 60V/μs.
Submit Documentation Feedback
Copyright © 2000–2013, Texas Instruments Incorporated
Product Folder Links: LM6142 LM6144
13
LM6142, LM6144
SNOS726D – JUNE 2000 – REVISED MARCH 2013
www.ti.com
Figure 37. Slew Rate vs. Δ VIN
VS = ±5V
This effect is most noticeable at higher supply voltages and lower gains where incoming signals are likely to be
large.
This new input circuit also eliminates the phase reversal seen in many op amps when they are overdriven.
This speed-up action adds stability to the system when driving large capacitive loads.
DRIVING CAPACITIVE LOADS
Capacitive loads decrease the phase margin of all op amps. This is caused by the output resistance of the
amplifier and the load capacitance forming an R-C phase lag network. This can lead to overshoot, ringing and
oscillation. Slew rate limiting can also cause additional lag. Most op amps with a fixed maximum slew-rate will lag
further and further behind when driving capacitive loads even though the differential input voltage raises. With the
LM6142, the lag causes the slew rate to raise. The increased slew-rate keeps the output following the input
much better. This effectively reduces phase lag. After the output has caught up with the input, the differential
input voltage drops down and the amplifier settles rapidly.
These features allow the LM6142 to drive capacitive loads as large as 1000pF at unity gain and not oscillate.
The scope photos (Figure 38 and Figure 39) above show the LM6142 driving a l000pF load. In Figure 38, the
upper trace is with no capacitive load and the lower trace is with a 1000pF load. Here we are operating on ±12V
supplies with a 20 VPP pulse. Excellent response is obtained with a Cf of l0pF. In Figure 39, the supplies have
been reduced to ±2.5V, the pulse is 4 VPP and Cf is 39pF. The best value for the compensation capacitor is best
established after the board layout is finished because the value is dependent on board stray capacity, the value
of the feedback resistor, the closed loop gain and, to some extent, the supply voltage.
Another effect that is common to all op amps is the phase shift caused by the feedback resistor and the input
capacitance. This phase shift also reduces phase margin. This effect is taken care of at the same time as the
effect of the capacitive load when the capacitor is placed across the feedback resistor.
The circuit shown in Figure 40 was used for these scope photos.
Figure 38.
14
Submit Documentation Feedback
Copyright © 2000–2013, Texas Instruments Incorporated
Product Folder Links: LM6142 LM6144
LM6142, LM6144
www.ti.com
SNOS726D – JUNE 2000 – REVISED MARCH 2013
Figure 39.
Figure 40.
Typical Applications
FISH FINDER/ DEPTH SOUNDER.
The LM6142/LM6144 is an excellent choice for battery operated fish finders. The low supply current, high gainbandwidth and full rail to rail output swing of the LM6142 provides an ideal combination for use in this and similar
applications.
ANALOG TO DIGITAL CONVERTER BUFFER
The high capacitive load driving ability, rail-to-rail input and output range with the excellent CMR of 82 dB, make
the LM6142/LM6144 a good choice for buffering the inputs of A to D converters.
3 OP AMP INSTRUMENTATION AMP WITH RAIL-TO-RAIL INPUT AND OUTPUT
Using the LM6144, a 3 op amp instrumentation amplifier with rail-to-rail inputs and rail to rail output can be made.
These features make these instrumentation amplifiers ideal for single supply systems.
Some manufacturers use a precision voltage divider array of 5 resistors to divide the common-mode voltage to
get an input range of rail-to-rail or greater. The problem with this method is that it also divides the signal, so to
even get unity gain, the amplifier must be run at high closed loop gains. This raises the noise and drift by the
internal gain factor and lowers the input impedance. Any mismatch in these precision resistors reduces the CMR
as well. Using the LM6144, all of these problems are eliminated.
In this example, amplifiers A and B act as buffers to the differential stage (Figure 41). These buffers assure that
the input impedance is over 100MΩ and they eliminate the requirement for precision matched resistors in the
input stage. They also assure that the difference amp is driven from a voltage source. This is necessary to
maintain the CMR set by the matching of R1–R2 with R3–R4.
Submit Documentation Feedback
Copyright © 2000–2013, Texas Instruments Incorporated
Product Folder Links: LM6142 LM6144
15
LM6142, LM6144
SNOS726D – JUNE 2000 – REVISED MARCH 2013
www.ti.com
Figure 41.
The gain is set by the ratio of R2/R1 and R3 should equal R1 and R4 equal R2. Making R4 slightly smaller than
R2 and adding a trim pot equal to twice the difference between R2 and R4 will allow the CMR to be adjusted for
optimum.
With both rail to rail input and output ranges, the inputs and outputs are only limited by the supply voltages.
Remember that even with rail-to-rail output, the output can not swing past the supplies so the combined common
mode voltage plus the signal should not be greater than the supplies or limiting will occur.
SPICE MACROMODEL
A SPICE macromodel of this and many other Texas Instruments op amps is
http://www.ti.com/ww/en/analog/webench/index.shtml?DCMP=hpa_sva_webench&HQS=webench-bb.
16
Submit Documentation Feedback
available
Copyright © 2000–2013, Texas Instruments Incorporated
Product Folder Links: LM6142 LM6144
LM6142, LM6144
www.ti.com
SNOS726D – JUNE 2000 – REVISED MARCH 2013
REVISION HISTORY
Changes from Revision C (March 2013) to Revision D
•
Page
Changed layout of National Data Sheet to TI format .......................................................................................................... 16
Submit Documentation Feedback
Copyright © 2000–2013, Texas Instruments Incorporated
Product Folder Links: LM6142 LM6144
17
PACKAGE OPTION ADDENDUM
www.ti.com
13-Aug-2022
PACKAGING INFORMATION
Orderable Device
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
(2)
Lead finish/
Ball material
MSL Peak Temp
Op Temp (°C)
Device Marking
(3)
Samples
(4/5)
(6)
LM6142AIM
NRND
SOIC
D
8
95
Non-RoHS
& Green
Call TI
Level-1-235C-UNLIM
-40 to 85
LM614
2AIM
LM6142AIM/NOPB
ACTIVE
SOIC
D
8
95
RoHS & Green
SN
Level-1-260C-UNLIM
-40 to 85
LM614
2AIM
LM6142AIMX
NRND
SOIC
D
8
2500
Non-RoHS
& Green
Call TI
Level-1-235C-UNLIM
-40 to 85
LM614
2AIM
LM6142AIMX/NOPB
ACTIVE
SOIC
D
8
2500
RoHS & Green
SN
Level-1-260C-UNLIM
-40 to 85
LM614
2AIM
LM6142BIM
NRND
SOIC
D
8
95
Non-RoHS
& Green
Call TI
Level-1-235C-UNLIM
-40 to 85
LM614
2BIM
LM6142BIM/NOPB
ACTIVE
SOIC
D
8
95
RoHS & Green
SN
Level-1-260C-UNLIM
-40 to 85
LM614
2BIM
LM6142BIMX
NRND
SOIC
D
8
2500
Non-RoHS
& Green
Call TI
Level-1-235C-UNLIM
-40 to 85
LM614
2BIM
LM6142BIMX/NOPB
ACTIVE
SOIC
D
8
2500
RoHS & Green
SN
Level-1-260C-UNLIM
-40 to 85
LM614
2BIM
Samples
LM6142BIN/NOPB
ACTIVE
PDIP
P
8
40
RoHS & Green
NIPDAU
Level-1-NA-UNLIM
-40 to 85
LM6142
BIN
Samples
LM6144AIM
NRND
SOIC
D
14
55
Non-RoHS
& Green
Call TI
Level-1-235C-UNLIM
-40 to 85
LM6144
AIM
LM6144AIM/NOPB
ACTIVE
SOIC
D
14
55
RoHS & Green
SN
Level-1-260C-UNLIM
-40 to 85
LM6144
AIM
Samples
LM6144AIMX/NOPB
ACTIVE
SOIC
D
14
2500
RoHS & Green
SN
Level-1-260C-UNLIM
-40 to 85
LM6144
AIM
Samples
LM6144BIM
NRND
SOIC
D
14
55
Non-RoHS
& Green
Call TI
Level-1-235C-UNLIM
-40 to 85
LM6144
BIM
LM6144BIM/NOPB
ACTIVE
SOIC
D
14
55
RoHS & Green
SN
Level-1-260C-UNLIM
-40 to 85
LM6144
BIM
LM6144BIMX
NRND
SOIC
D
14
2500
Non-RoHS
& Green
Call TI
Level-1-235C-UNLIM
-40 to 85
LM6144
BIM
LM6144BIMX/NOPB
ACTIVE
SOIC
D
14
2500
RoHS & Green
SN
Level-1-260C-UNLIM
-40 to 85
LM6144
BIM
Samples
LM6144BIN/NOPB
ACTIVE
PDIP
N
14
25
RoHS & Green
NIPDAU
Level-1-NA-UNLIM
-40 to 85
LM6144BIN
Samples
Addendum-Page 1
Samples
Samples
Samples
Samples
PACKAGE OPTION ADDENDUM
www.ti.com
13-Aug-2022
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may
reference these types of products as "Pb-Free".
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of
工商网监
湘ICP备2023018690号
