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PDF LMP2015 Data sheet ( Hoja de datos )
| Número de pieza | LMP2015 | |
| Descripción | (LMP2015 / LMP2016) Rail-to-Rail Output Operational Amplifier | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LMP2015 (archivo pdf) en la parte inferior de esta página. Total 16 Páginas | ||
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www.DataSheet4U.com
December 18, 2007
LMP2015 Single/LMP2016 Dual
High Precision, Rail-to-Rail Output Operational Amplifier
General Description
The LMP2015/LMP2016 are the first members of National's
new LMPTM precision amplifier family. The LMP2015/
LMP2016 offer unprecedented accuracy and stability in
space-saving miniature packaging at an affordable price.
These devices utilize patented techniques to measure and
continually correct the input offset error voltage. The result is
a series of amplifiers which are ultra stable over time and
temperature. They have excellent CMRR and PSRR ratings,
and do not exhibit the familiar 1/f voltage and current noise
increase that plagues traditional amplifiers. The combination
of characteristics makes the LMP2015/LMP2016 good choic-
es for transducer amplifiers, high gain configurations, ADC
buffer amplifiers, DAC I-V conversion, or any other 2.7V-5V
application requiring precision and long term stability.
Other useful benefits of the LMP2015/LMP2016 are rail-to-rail
output, a low supply current of 930 µA, and a wide gain band-
width product of 3 MHz. These extremely versatile features
provide high performance and ease of use.
Features
(For VS = 5V, Typical unless otherwise noted)
■ Low guaranteed VOS over temperature
■ Low noise with no 1/f
■ High CMRR
■ High PSRR
■ High AVOL
■ Wide gain bandwidth product
■ High slew rate
■ Low supply current
■ Rail-to-Rail output
■ No external capacitors required
Applications
■ Precision instrumentation amplifiers
■ Thermocouple amplifiers
■ Strain gauge bridge amplifier
■ ADC driver
10 µV
35 nV/√Hz
130 dB
120 dB
130 dB
3 MHz
4 V/µs
930 µA
30 mV
Connection Diagrams
5-Pin SOT23
8-Pin SOIC
8-Pin MSOP
Top View
20212502
Top View
20212542
Top View
20212538
Ordering Information
Package
5-Pin SOT23
8-Pin SOIC
8-Pin MSOP
Part Number
LMP2015MF
LMP2015MFX
LMP2015MA
LMP2015MAX
LMP2016MA
LMP2016MAX
LMP2016MM
LMP2016MMX
Temperature Package Marking
Range
AD5A
−40°C to 125°C
LMP2015MA
LMP2016MA
AE5A
Transport Media
1k Units Tape and Reel
3k Units Tape and Reel
95 Units/Rail
2.5k Units Tape and Reel
95 Units/Rail
2.5k Units Tape and Reel
1k Units Tape and Reel
3.5k Units Tape and Reel
NSC Drawing
MF05A
M08A
MUA08A
© 2007 National Semiconductor Corporation 202125
www.national.com
1 page  
Typical Performance Characteristics
www.DataSheet4U.com
TA = 25°C, VS = 5V unless otherwise specified.
Supply Current vs. Supply Voltage
Offset Voltage vs. Supply Voltage
20212555
Offset Voltage vs. Common Mode Voltage (VS = +5V)
20212523
Offset Voltage vs. Common Mode Voltage (VS = +2.7V)
Voltage Noise vs. Frequency
20212524
20212525
Input Bias Current vs. Common Mode
20212504
5
20212503
www.national.com
5 Page 
www.DataSheet4U.com
PRECISION STRAIN GAUGE AMPLIFIER
This strain gauge amplifier (Figure 4) provides high gain
(1006 or ~60 dB) with very low offset and drift. Using the re-
sistors' tolerances as shown, the worst case CMRR will be
greater than 108 dB. The CMRR is directly related to the re-
sistor mismatch. The rejection of common-mode error, at the
output, is independent of the differential gain, which is set by
R3. The CMRR is further improved, if the resistor ratio match-
ing is improved, by specifying tighter-tolerance resistors, or
by trimming.
20212517
FIGURE 2. The Output of a Chopper Stabilized Op Amp
(MAX432)
20212504
FIGURE 3. The Output of the LMP2015/LMP2016
INPUT CURRENTS
The LMP2015/LMP2016 input currents are different than
standard bipolar or CMOS input currents in that it appears as
a current flowing in one input and out the other. Under most
operating conditions, these currents are in the picoamp level
and will have little or no effect in most circuits. These currents
tend to increase slightly when the common-mode voltage is
near the minus supply. (See the typical curves.) At high tem-
peratures such as 85°C, the input currents become larger,
0.5 nA typical, and are both positive except when the VCM is
near V−. If operation is expected at low common-mode volt-
ages and high temperature, do not add resistance in series
with the inputs to balance the impedances. Doing this can
cause an increase in offset voltage. A small resistance such
as 1 kΩ can provide some protection against very large tran-
sients or overloads, and will not increase the offset signifi-
cantly.
20212518
FIGURE 4. Precision Strain Gauge Amplifier
Extending Supply Voltages and Output Swing by Using a
Composite Amplifier Configuration
In cases where substantially higher output swing is required
with higher supply voltages, arrangements such as those
shown in Figure 5 and Figure 6 can be used. These configu-
rations utilize the excellent DC performance of the LMP2015
while allowing the superior voltage and frequency capabilities
of the LM6171 to set the dynamic performance of the overall
amplifier. For example, it is possible to achieve ±12V output
swing with 300 MHz of overall GBW (AV = 100) while keeping
the worst case output shift due to VOS less than 4 mV. The
LMP2015 output voltage is kept at about mid-point of its over-
all supply voltage, and its input common mode voltage range
allows the V− terminal to be grounded in one case (Figure 5,
inverting operation) and tied to a small non-critical negative
bias in another (Figure 6, non-inverting operation). Higher
closed loop gains are also possible with a corresponding re-
duction in realizable bandwidth. Table 1 shows some other
closed loop gain possibilities along with the measured per-
formance in each case.
11 www.national.com
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet LMP2015.PDF ] | |
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