LM6152/LM6154
Dual and Quad High Speed/Low Power 75 MHz GBW
Rail-to-Rail I/O Operational Amplifiers
May 1999
LM6152/LM6154Dual and Quad High Speed/Low Power 75 MHz GBW Rail-to-Rail I/O Operational
Amplifiers
General Description
Using patented circuit topologies, the LM6152/54 provides
new levels of speed vs. power performance in applications
where low voltage supplies or power limitations previously
made compromise necessary. With only 1.4 mA/amplifier
supply current, the 75 MHz gain bandwidth of this device
supports new portable applications where higher power devices unacceptablydrain battery life. The slew rate of the devices increases with increasing input differential voltage,
thus allowing the device to handle capacitive loads while
maintaining large signal amplitude.
The LM6152/54 can be driven by voltages that exceed both
power supply rails, thus eliminating concerns about exceeding the common-mode voltage range. The rail-to-rail output
swing capability provides the maximum possible dynamic
range at the output. This is particularly important when operating on low supply voltages.
Operating on supplies from 2.7V to over 24V, the LM6152/54
is excellent for a very wide range of applications, from battery operated systems with large bandwidth requirements to
high speed instrumentation.
Connection Diagrams
8-Pin DIP/SO
Features
=
At V
5V, Typ unless noted
S
n Greater than Rail-to-Rail Input CMVR −0.25V to 5.25V
n Rail-to-Rail Output Swing 0.01V to 4.99V
n Wide Gain-Bandwidth: 75 MHz
n Slew Rate:
Small signal 5V/µs
Large signal 45V/µs
n Low supply current 1.4mA/amplifier
n Wide supply range 2.7V to 24V
n Fast settling time of 1.1µs for 2V step (to 0.01%)
n PSRR 91 dB
n CMRR 84 dB
@
100 kHz
Applications
n Portable high speed instrumentation
n Signal conditioning amplifier/ADC buffers
n Barcode scanners
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
ESD Tolerance (Note 2)2500V
Differential Input Voltage15V
Voltage at Input/Output
Pin(V
Supply Voltage (V
+−V−
Current at Input Pin
Current at Output Pin
(Note 3)
Current at Power Supply
Pin50mA
Lead Temperature
(soldering, 10 sec)260˚C
+
) + 0.3V, (V−) −0.3V
)35V
±
10mA
±
25mA
Storage Temperature
Range-65˚C to +150˚C
Junction Temperature
(Note 4)150˚C
Operating Ratings (Note 1)
Supply Voltage2.7V ≤ V
Junction Temperature Range
LM6152,LM61540˚C ≤ T
Thermal Resistance (θ
)
JA
N Pkg, 8-pin Molded Dip115˚C/W
M Pkg, 8-pin Surface Mount193˚C/W
N Pkg, 14-pin Molded Dip81˚C/W
M Pkg, 14-pin Surface Mount126˚C/W
S
≤ + 70˚C
J
≤ 24V
5.0V DC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for TJ= 25˚C, V
Boldface limits apply at the temperature extremes.
SymbolParameterConditions
V
OS
TCV
I
B
I
OS
R
IN
CMRRCommon Mode Rejection Ratio0V ≤ V
PSRRPower Supply Rejection Ratio5V ≤ V
V
CM
A
V
V
O
I
SC
Input Offset Voltage
Input Offset Voltage Average Drift10µV/˚C
OS
Input Bias Current0V ≤ VCM≤ 5V500
Input Offset Current32
Input Resistance, CM0V ≤ VCM≤ 4V30MΩ
≤ 4V947070
CM
0V ≤ V
≤ 5V846060
CM
+
≤ 24V918080dB min
Input Common-Mode Voltage Range Low−0.2500V
High5.255.05.0V
Large Signal Voltage GainR
=
10kΩ2145050V/mV
L
Output Swing
=
R
100kΩ
L
=
2kΩ
R
L
Output Short Circuit CurrentSourcing
Sinking
+
=
5.0V, V
−
= 0V, V
Typ
(Note 5)
0.54
750
40
0.006
4.992
0.04
4.89
6.2
16.9
CM
=
V
O
LM6154AC
LM6152AC
(Note 6)
=
Limit
1500
0.02
0.03
4.97
4.96
0.10
0.12
4.80
4.70
+
/2 and R
V
>
L
LM6154BC
LM6152BC
(Note 6)
2
4
980
100
160
3
2.5
27
17
7
5
4040
1MΩto V+/2.
Limt
5
7
980
1500
100
160
0.02
0.03
4.97
4.96
0.10
0.12
4.80
4.70
3
2.5
27
17
7
5
Units
mV
max
nA
max
nA
max
dB min
min
V
max
V
min
V
max
V
min
mA
min
mA
max
mA
min
mA
max
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Page 4
5.0V DC Electrical Characteristics (Continued)
Unless otherwise specified, all limits guaranteed for TJ= 25˚C, V
Boldface limits apply at the temperature extremes.
SymbolParameterConditions
I
S
Supply CurrentPer Amplifier
+
=
5.0V, V
−
= 0V, V
CM
Typ
(Note 5)
1.4
=
V
O
LM6154AC
LM6152AC
(Note 6)
=
V
Limit
2.25
+
/2 and R
2
>
1MΩto V+/2.
L
LM6154BC
LM6152BC
Limt
(Note 6)
2
2.25
Units
mA
max
5.0V AC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for TJ= 25˚C, V
Boldface limits apply at the temperature extremes.
SymbolParameterConditions
SRSlew Rate
±
4V Step@V
<
R
S
1kΩ
+
S
=
5.0V, V
=
−
= 0V, V
CM
Typ
(Note 5)
±
6V,
30
=
V
O
LM6154AC
LM6152AC
(Note 6)
=
V
Limit
24
15
+
/2 and R
>
1MΩto V+/2.
L
LM6154BC
LM6152BC
Limt
(Note 6)
24
15
Units
V/µs
min
GBWGain-Bandwidth Productf=100 kHz75MHz
Amp-to-Amp IsolationR
e
n
i
n
Input-Referred Voltage Noisef=1 kHz9nV
Input-Referred Current Noisef=1 kHz0.34pA
T.H.DTotal Harmonic Distortionf=10 kHz, R
tsSettling Time2V Step to 0.01
2.7V DC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for TJ= 25˚C, V
Boldface limits apply at the temperature extremes.
Unless otherwise specified, all limits guaranteed for TJ= 25˚C, V
Boldface limits apply at the temperature extremes.
SymbolParameterConditions
=
10kΩ55V/mV
L
=
10kΩ
L
0.044
23.91
1.6
+
=
24V, V
−
= 0V, V
CM
Typ
(Note 5)
=
V
O
LM6154AC
LM6152AC
0.075
0.090
23.8
23.7
2.25
2.50
+
=
/2 and R
V
Limit
(Note 6)
0.075
0.090
23.8
23.7
2.25
2.50
>
1MΩto V+/2.
L
LM6154BC
LM6152BC
Limt
(Note 6)
V
max
V
min
mA
max
Units
GBWGain-Bandwidth Productf=100kHz80MHz
Note 1: 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.
Note 2: Human body model, 1.5kΩ in series with 100pF.
Note 3: 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.
Note 4: The maximum power dissipation is a function of T
=(T
is P
D
Note 5: Typical Values represent the most likely parametric norm.
Note 6: All limits are guaranteed by testing or statistical analysis.
)/θJA. All numbers apply for packages soldered directly into a PC board.
J(max)–TA
, θJA, and TA. The maximum allowable power dissipation at any ambient temperature
J(max)
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Page 6
Typical Performance Characteristics
Supply Current vs.
Supply Voltage
Bias Current vs. V
Output Voltage vs.
Source Current
DS012350-5
CM
DS012350-8
Offset Voltage vs.
Supply voltage
Bias Current vs. V
Output Voltage vs.
Source Current
DS012350-6
CM
DS012350-9
Bias Current vs.
Supply voltage
Bias Current vs. V
Output Voltage vs.
Source Current
DS012350-7
CM
DS012350-10
DS012350-11
Output Voltage vs.
Sink Current
DS012350-14
Output Voltage vs.
Sink Current
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DS012350-12
DS012350-15
DS012350-13
Output Voltage vs.
Sink Current
DS012350-16
Page 7
Typical Performance Characteristics (Continued)
Crosstalk (dB
vs. Frequency
CMRR
Open Loop Gain/
Phase (V
=
5V)
S
DS012350-17
DS012350-20
GBWP (@100 kHz)
vs. Supply Voltage
Voltage Swing vs.
Frequency (C
Open Loop Gain/
Phase (V
S
L
=
=
100 pF)
10V)
DS012350-18
DS012350-22
Unity Gain Frequency
vs. Supply Voltage
for Various Loads
DS012350-19
PSRR vs. Frequency
DS012350-23
Open Loop Gain/
Phase (V
=
24V)
S
Noise Voltage
vs. Frequency
DS012350-24
DS012350-27
Noise Current
vs. Frequency
DS012350-25
DS012350-28
DS012350-26
Voltage Error
vs. Settle Time
DS012350-29
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Page 8
Typical Performance
Characteristics
Total Harmonic Distortion
(Continued)
vs. Frequency
DS012350-31
Application Information
The LM6152/6154 is ideally suited for operation with about
10kΩ (Feedback Resistor, R
negative input terminal.
With R
set to this value, for most applications requiring a
F
close loop gain of 10 or less, an additional small compensation capacitor (C
in order to achieve a reasonable overshoot (10%) at the out-
) (see
F
put by compensating for stray capacitance across the inputs.
The optimum value for C
mentally with a trimmer cap in place since its value is dependant on the supply voltage, output driving load, and the operating gain. Below, some typical values used in an inverting
configuration and driving a 10kΩ load have been tabulated
for reference:
) between the output and the
F
Figure 1
) is recommendedacross R
can best be established experi-
F
Because of the unique structure of this amplifier, when used
at low closed loop gains, the realizable BW will be much less
than the GBW product would suggest.
The LM6152/6154 brings a new level of ease of use to op
amp system design.
The greater than rail-to-rail input voltage range eliminates
concern over exceeding the common-mode 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.
The high gain-bandwidth with low supply current opens new
battery powered applications where higher power consumption previously reduced battery life to unacceptable levels.
The ability to drive large capacitive loads without oscillating
functional removes this common problem.
To take advantage of these features, some ideas should be
kept in mind.
The LM6152/6154, capacitive loads do not lead to oscillations, in all but the most extreme conditions, but they will result in reduced bandwidth. They also cause increased settling time.
Unlike most bipolar op amps, the unique phase reversal
prevention/speed-up circuit in the input stage, caused the
slew rate to be very much a functionof the input pulse amplitude. This results in a 10 to 1 increase in slew rate when the
F
differential input signal increases. Large fast pulses will raise
the slew-rate to more than 30V/µs.
TABLE 1. Typical BW (−3 dB) at Various
Supply Voltage and Gains
V
Volts
S
GainC
pF
F
BW (−3 dB)
MHz
−15.64
3
−106.81.97
−100None0.797
−12.26.6
24
−104.72.2
−100None0.962
In the non-inverting configuration, the LM6152/6154 can be
used for closed loop gains of +2 and above. In this case,
also, the compensation capacitor (C
across R
(=10 kΩ) for gains of 10 or less.
F
FIGURE 1. Typical Inverting Gain Circuit A
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) is recommended
F
DS012350-30
=
−1
V
DS012350-21
FIGURE 2. Slew Rate vs. V
diff
The speed-up action adds stability to the system when driving large capacitive loads.
A conventional op amp exhibits a fixed maximum slew-rate
even though the differential input voltage rises due to the
lagging output voltage. In the LM6152/6154, increasing lag
causes the differential input voltage to increase but as it
does, the increased slew-rate keeps the output following the
input much better. This effectively reduces phase lag. As a
result, the LM6152/6154 can drive capacitive loads as large
as 470 pF at gain of 2 and above, and not oscillate.
Capacitive loads decrease the phase margin of all op amps.
This can lead to overshoot, ringing and oscillation. This is
caused by the output resistance of the amplifier and the load
capacitance forming an R-C phase shift network. The
LM6152/6154 senses this phase shift and partly compensates for this effect.
LM6152/LM6154Dual and Quad High Speed/Low Power 75 MHz GBW Rail-to-Rail I/O Operational
Amplifiers
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NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL
COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or
systems which, (a) are intended for surgical implant
into the body, or (b) support or sustain life, and
whose failure to perform when properly used in
accordance with instructions for use provided in the
2. A critical component is any component of a life
support device or system whose failure to perform
can be reasonably expected to cause the failure of
the life support device or system, or to affect its
safety or effectiveness.
labeling, can be reasonably expected to result in a
significant injury to the user.
National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.