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PDF MC34071 Data sheet ( Hoja de datos )

Número de pieza MC34071
Descripción HIGH BANDWIDTH SINGLE SUPPLY OPERATIONAL AMPLIFIERS
Fabricantes Motorola Semiconductors 
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Order this document by MC34071/D
High Slew Rate, Wide
Bandwidth, Single Supply
Operational Amplifiers
Quality bipolar fabrication with innovative design concepts are employed
for the MC33071/72/74, MC34071/72/74 series of monolithic operational
amplifiers. This series of operational amplifiers offer 4.5 MHz of gain
bandwidth product, 13 V/µs slew rate and fast setting time without the use of
JFET device technology. Although this series can be operated from split
supplies, it is particularly suited for single supply operation, since the
common mode input voltage range includes ground potential (VEE). With A
Darlington input stage, this series exhibits high input resistance, low input
offset voltage and high gain. The all NPN output stage, characterized by no
deadband crossover distortion and large output voltage swing, provides high
capacitance drive capability, excellent phase and gain margins, low open
loop high frequency output impedance and symmetrical source/sink AC
frequency response.
The MC33071/72/74, MC34071/72/73 series of devices are available in
standard or prime performance (A Suffix) grades and are specified over the
commercial, industrial/vehicular or military temperature ranges. The
complete series of single, dual and quad operational amplifiers are available
in plastic DIP and SOIC surface mount packages.
Wide Bandwidth: 4.5 MHz
High Slew Rate: 13 V/µs
Fast Settling Time: 1.1 µs to 0.1%
Wide Single Supply Operation: 3.0 V to 44 V
Wide Input Common Mode Voltage Range: Includes Ground (VEE)
Low Input Offset Voltage: 3.0 mV Maximum (A Suffix)
Large Output Voltage Swing: –14.7 V to +14 V (with ±15 V Supplies)
Large Capacitance Drive Capability: 0 pF to 10,000 pF
Low Total Harmonic Distortion: 0.02%
Excellent Phase Margin: 60°
Excellent Gain Margin: 12 dB
Output Short Circuit Protection
ESD Diodes/Clamps Provide Input Protection for Dual and Quad
Op Amp
Function
Single
Dual
Quad
ORDERING INFORMATION
Device
Operating
Temperature Range
MC34071P, AP
MC34071D, AD
TA = 0° to +70°C
MC33071P, AP
MC33071D, AD
TA = –40° to +85°C
MC34072P, AP
MC34072D, AD
TA = 0° to +70°C
MC33072P, AP
MC33072D, AD
TA = –40° to +85°C
MC34074P, AP
MC34074D, AD
TA = 0° to +70°C
MC33074P, AP
MC33074D, AD
TA = –40° to +85°C
Package
Plastic DIP
SO–8
Plastic DIP
SO–8
Plastic DIP
SO–8
Plastic DIP
SO–8
Plastic DIP
SO–14
Plastic DIP
SO–14
MC34071,2,4,A
MC33071,2,4,A
HIGH BANDWIDTH
SINGLE SUPPLY
OPERATIONAL AMPLIFIERS
8
1
P SUFFIX
PLASTIC PACKAGE
CASE 626
8
1
D SUFFIX
PLASTIC PACKAGE
CASE 751
(SO–8)
PIN CONNECTIONS
Offset Null 1
8 NC
Inputs
2
3
VEE 4
+
7 VCC
6 Output
5 Offset Null
(Single, Top View)
Output 1 1
2–
Inputs 1 +
3
VEE 4
8 VCC
7 Output 2
–6
+
Inputs 2
5
(Dual, Top View)
14
1
14
1
P SUFFIX
PLASTIC PACKAGE
CASE 646
D SUFFIX
PLASTIC PACKAGE
CASE 751A
(SO–14)
PIN CONNECTIONS
Output 1 1
Inputs 1
2
+
1
3
VCC 4
Inputs 2
5
6
+2
Output 2 7
14 Output 4
4
13
+
12
Inputs 4
11 VEE
3 + 10
–9
Inputs 3
8 Output 3
(Quad, Top View)
MOTOROLA ANALOG IC DEVICE DATA
© Motorola, Inc. 1996
Rev 0
1

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MC34071 pdf
MC34071,2,4,A MC33071,2,4,A
Figure 3. Maximum Power Dissipation versus
Temperature for Package Types
2400
2000
1600
SO–14 Pkg
1200
8 & 14 Pin Plastic Pkg
800
SO–8 Pkg
400
0
–55 –40 –20
0 20 40 60 80 100 120 140 160
TA, AMBIENT TEMPERATURE (°C)
Figure 4. Input Offset Voltage versus
Temperature for Representative Units
4.0 VCC = +15 V
VEE = –15 V
VCM = 0
2.0
0
–2.0
–4.0
–55
–25 0 25 50 75 100
TA, AMBIENT TEMPERATURE (°C)
125
VCC
VCC –0.8
Figure 5. Input Common Mode Voltage
Range versus Temperature
VCC VCC/VEE = +1.5 V/ –1.5 V to +22 V/ –22 V
VCC –1.6
VCC –2.4
VEE +0.01
VEE
–55
VEE
–25 0
25 50 75 100 125
TA, AMBIENT TEMPERATURE (°C)
Figure 6. Normalized Input Bias Current
versus Temperature
1.3
VCC = +15 V
1.2 VEE = –15 V
VCM = 0
1.1
1.0
0.9
0.8
0.7
–55
–25 0 25 50 75
TA, AMBIENT TEMPERATURE (°C)
100
125
Figure 7. Normalized Input Bias Current versus
Input Common Mode Voltage
1.4
VCC = +15 V
VEE = –15 V
1.2 TA = 25°C
1.0
0.8
0.6
–12
–8.0 –4.0
0
4.0 8.0
VIC, INPUT COMMON MODE VOLTAGE (V)
12
Figure 8. Split Supply Output Voltage
Swing versus Supply Voltage
50
RL Connected
40 to Ground TA = 25°C
30
RL = 10 k
RL = 2.0 k
20
10
0
0 5.0 10 15 20 25
VCC, |VEE|, SUPPLY VOLTAGE (V)
MOTOROLA ANALOG IC DEVICE DATA
5

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MC34071 arduino
MC34071,2,4,A MC33071,2,4,A
Since the input capacitance associated with the small
geometry input device is substantially lower (2.5 pF) than the
typical JFET input gate capacitance (5.0 pF), better
frequency response for a given input source resistance can
be achieved using the MC34071 series of amplifiers. This
performance feature becomes evident, for example, in fast
settling D–to–A current to voltage conversion applications
where the feedback resistance can form an input pole with
the input capacitance of the op amp. This input pole creates
a 2nd order system with the single pole op amp and is
therefore detrimental to its settling time. In this context, lower
input capacitance is desirable especially for higher values of
feedback resistances (lower current DACs). This input pole
can be compensated for by creating a feedback zero with a
capacitance across the feedback resistance, if necessary, to
reduce overshoot. For 2.0 kof feedback resistance, the
MC34071 series can settle to within 1/2 LSB of 8 bits in 1.0
µs, and within 1/2 LSB of 12–bits in 2.2 µs for a 10 V step. In
a inverting unity gain fast settling configuration, the
symmetrical slew rate is ±13 V/µs. In the classic noninverting
unity gain configuration, the output positive slew rate is +10
V/µs, and the corresponding negative slew rate will exceed
the positive slew rate as a function of the fall time of the input
waveform.
Since the bipolar input device matching characteristics are
superior to that of JFETs, a low untrimmed maximum offset
voltage of 3.0 mV prime and 5.0 mV downgrade can be
economically offered with high frequency performance
characteristics. This combination is ideal for low cost
precision, high speed quad op amp applications.
The all NPN output stage, shown in its basic form on the
equivalent circuit schematic, offers unique advantages over
the more conventional NPN/PNP transistor Class AB
output stage. A 10 kload resistance can swing within 1.0 V
of the positive rail (VCC), and within 0.3 V of the negative
rail (VEE), providing a 28.7 Vpp swing from ±15 V supplies.
This large output swing becomes most noticeable at lower
supply voltages.
The positive swing is limited by the saturation voltage of
the current source transistor Q7, and VBE of the NPN pull up
transistor Q17, and the voltage drop associated with the short
circuit resistance, R7. The negative swing is limited by the
saturation voltage of the pull–down transistor Q16, the
voltage drop ILR6, and the voltage drop associated with
resistance R7, where IL is the sink load current. For small
valued sink currents, the above voltage drops are negligible,
allowing the negative swing voltage to approach within
millivolts of VEE. For large valued sink currents (>5.0 mA),
diode D3 clamps the voltage across R6, thus limiting the
negative swing to the saturation voltage of Q16, plus the
forward diode drop of D3 (VEE +1.0 V). Thus for a given
supply voltage, unprecedented peak–to–peak output voltage
swing is possible as indicated by the output swing
specifications.
If the load resistance is referenced to VCC instead of
ground for single supply applications, the maximum possible
output swing can be achieved for a given supply voltage. For
light load currents, the load resistance will pull the output to
VCC during the positive swing and the output will pull the load
resistance near ground during the negative swing. The load
resistance value should be much less than that of the
feedback resistance to maximize pull up capability.
Because the PNP output emitter–follower transistor has
been eliminated, the MC34071 series offers a 20 mA
minimum current sink capability, typically to an output voltage
of (VEE +1.8 V). In single supply applications the output can
directly source or sink base current from a common emitter
NPN transistor for fast high current switching applications.
In addition, the all NPN transistor output stage is inherently
fast, contributing to the bipolar amplifier’s high gain
bandwidth product and fast settling capability. The
associated high frequency low output impedance (30 typ
@ 1.0 MHz) allows capacitive drive capability from 0 pF to
10,000 pF without oscillation in the unity closed loop gain
configuration. The 60° phase margin and 12 dB gain margin
as well as the general gain and phase characteristics are
virtually independent of the source/sink output swing
conditions. This allows easier system phase compensation,
since output swing will not be a phase consideration. The
high frequency characteristics of the MC34071 series also
allow excellent high frequency active filter capability,
especially for low voltage single supply applications.
Although the single supply specifications is defined at
5.0 V, these amplifiers are functional to 3.0 V @ 25°C
although slight changes in parametrics such as bandwidth,
slew rate, and DC gain may occur.
If power to this integrated circuit is applied in reverse
polarity or if the IC is installed backwards in a socket, large
unlimited current surges will occur through the device that
may result in device destruction.
Special static precautions are not necessary for these
bipolar amplifiers since there are no MOS transistors on
the die.
As with most high frequency amplifiers, proper lead dress,
component placement, and PC board layout should
be exercised for optimum frequency performance. For
example, long unshielded input or output leads may result in
unwanted input–output coupling. In order to preserve the
relatively low input capacitance associated with these
amplifiers, resistors connected to the inputs should be
immediately adjacent to the input pin to minimize additional
stray input capacitance. This not only minimizes the input
pole for optimum frequency response, but also minimizes
extraneous “pick up” at this node. Supply decoupling with
adequate capacitance immediately adjacent to the supply pin
is also important, particularly over temperature, since many
types of decoupling capacitors exhibit great impedance
changes over temperature.
The output of any one amplifier is current limited and thus
protected from a direct short to ground. However, under such
conditions, it is important not to allow the device to exceed
the maximum junction temperature rating. Typically for ±15 V
supplies, any one output can be shorted continuously to
ground without exceeding the maximum temperature rating.
MOTOROLA ANALOG IC DEVICE DATA
11

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