LM3900M [NSC]
LM2900/LM3900/LM3301 Quad Amplifiers; LM2900 / LM3900 / LM3301四路放大器
| 型号： | LM3900M |
| 厂家： | 
National Semiconductor |
| 描述： | LM2900/LM3900/LM3301 Quad Amplifiers |
| 文件： | 总20页 (文件大小：324K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
February 1995
LM2900/LM3900/LM3301 Quad Amplifiers
General Description
Features
Y
Wide single supply voltage
Range or dual supplies
4 V
to 32 V
DC
The LM2900 series consists of four independent, dual input,
internally compensated amplifiers which were designed
specifically to operate off of a single power supply voltage
and to provide a large output voltage swing. These amplifi-
ers make use of a current mirror to achieve the non-invert-
ing input function. Application areas include: ac amplifiers,
RC active filters, low frequency triangle, squarewave and
pulse waveform generation circuits, tachometers and low
speed, high voltage digital logic gates.
DC
DC
g
g
to 16 V
DC
2 V
Y
Supply current drain independent of supply voltage
Y
Y
Y
Y
Y
Y
Low input biasing current
High open-loop gain
Wide bandwidth
30 nA
70 dB
2.5 MHz (unity gain)
b
Large output voltage swing
(Va
1) Vp-p
Internally frequency compensated for unity gain
Output short-circuit protection
Schematic and Connection Diagrams
Dual-In-Line and S.O.
TL/H/7936–2
Top View
Order Number LM2900N, LM3900M, LM3900N or LM3301N
See NS Package Number M14A or N14A
TL/H/7936–1
C
1995 National Semiconductor Corporation
TL/H/7936
RRD-B30M115/Printed in U. S. A.
Absolute Maximum Ratings
If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
LM2900/LM3900
32 V
LM3301
Supply Voltage
28 V
DC
16 V
DC
g
14 V
g
DC
DC
e
Power Dissipation (T
Molded DIP
25 C) (Note 1)
§
A
1080 mW
765 mW
1080 mW
S.O. Package
a
b
Input Currents, I
IN
or I
IN
20 mA
DC
20 mA
DC
Output Short-Circuit DurationÐOne Amplifier
e
Continuous
Continuous
T
25 C (See Application Hints)
§
Operating Temperature Range
A
b
a
40 C to 85 C
§
§
b
a
40 C to 85 C
LM2900
LM3900
§
§
0 C to 70 C
a
§
§
65 C to 150 C
b
a
b a
65 C to 150 C
Storage Temperature Range
§
§
§
§
Lead Temperature (Soldering, 10 sec.)
260 C
§
260 C
§
Soldering Information
Dual-In-Line Package
Soldering (10 sec.)
Small Outline Package
Vapor Phase (60 sec.)
Infrared (15 sec.)
260 C
§
260 C
§
215 C
§
215 C
§
220 C
§
220 C
§
See AN-450 ‘‘Surface Mounting Methods and Their Effect on Product Reliability’’ for other methods of soldering surface mount
devices.
ESD tolerance (Note 7)
2000V
2000V
a
e
e
15 V , unless otherwise stated
DC
Electrical Characteristics T
25 C, V
§
A
LM2900
LM3900
LM3301
Parameter
Conditions
Units
Min Typ Max Min Typ Max Min Typ Max
Open
Loop
Voltage Gain
Over Temp.
e
Inverting Input
V/mV
DV
10 V
DC
O
Voltage Gain
1.2 2.8
1.2 2.8
1.2 2.8
Input Resistance
Output Resistance
1
8
1
8
1
9
MX
kX
Unity Gain Bandwidth
Input Bias Current
Inverting Input
2.5
2.5
2.5
MHz
Inverting Input, Va
Inverting Input
5 V
30 200
30 200
30 300
e
DC
nA
Slew Rate
Positive Output Swing
0.5
20
0.5
20
0.5
20
V/ms
Negative Output Swing
e %
Supply Current
R
R
On All Amplifiers
6.2
10
6.2
10
6.2
10 mA
DC
L
b
a
e
e
e
Output
Voltage
Swing
V
OUT
V
OUT
V
OUT
High
Low
High
2k,
I
I
0,
L
Va
IN
IN
13.5
13.5
13.5
e
15.0 V
DC
0
b
a
e
e
I
I
10 mA,
IN
0.09 0.2
0.09 0.2
0.09 0.2
0
V
DC
IN
Va
Absolute
I
I
0,
0
b
a
e
Maximum Ratings
e
e
IN
29.5
6
29.5
6
26.0
5
IN
e %
R
L
,
Output
Source
Sink
18
10
18
Current
Capability
(Note 2)
0.5 1.3
5
0.5 1.3
5
0.5 1.3
5
mA
DC
b
e
OL
e
5 mA
I
V
1V, I
IN
SINK
2
Electrical Characteristics (Note 6), Va 15 V , unless otherwise stated (Continued)
e
DC
LM2900
LM3900
LM3301
Parameter
Conditions
Units
Min Typ Max Min Typ Max Min Typ Max
e
e
100 Hz
Power Supply Rejection
Mirror Gain
T
25 C, f
§
70
70
70
dB
mA/mA
%
A
@
@
20 mA (Note 3)
200 mA (Note 3)
0.90
0.90
1.0
1.0
1.1
1.1
0.90
0.90
1.0
1.0
1.1
1.1
0.90
0.90
1
1
1.10
1.10
@
DMirror Gain
20 mA to 200 mA (Note 3)
2
5
2
5
2
5
Mirror Current
(Note 4)
10
500
10
500
10
1.0
500
mA
DC
e
Negative Input Current
Input Bias Current
T
A
25 C (Note 5)
§
1.0
300
1.0
300
mA
DC
Inverting Input
nA
Note 1: For operating at high temperatures, the device must be derated based on a 125 C maximum junction temperature and a thermal resistance of 92 C/W
§
§
which applies for the device soldered in a printed circuit board, operating in a still air ambient. Thermal resistance for the S.O. package is 131 C/W.
§
Note 2: The output current sink capability can be increased for large signal conditions by overdriving the inverting input. This is shown in the section on Typical
Characteristics.
Note 3: This spec indicates the current gain of the current mirror which is used as the non-inverting input.
Note 4: Input V match between the non-inverting and the inverting inputs occurs for a mirror current (non-inverting input current) of approximately 10 mA. This is
BE
therefore a typical design center for many of the application circuits.
b
Note 5: Clamp transistors are included on the IC to prevent the input voltages from swinging below ground more than approximately 0.3 V . The negative input
DC
currents which may result from large signal overdrive with capacitance input coupling need to be externally limited to values of approximately 1 mA. Negative input
currents in excess of 4 mA will cause the output voltage to drop to a low voltage. This maximum current applies to any one of the input terminals. If more than one
of the input terminals are simultaneously driven negative smaller maximum currents are allowed. Common-mode current biasing can be used to prevent negative
input voltages; see for example, the ‘‘Differentiator Circuit’’ in the applications section.
s
s
a
b
Note 6: These specs apply for 40 C
T
A
85 C, unless otherwise stated.
§
§
Note 7: Human body model, 1.5 kX in series with 100 pF.
Application Hints
When driving either input from a low-impedance source, a
limiting resistor should be placed in series with the input
lead to limit the peak input current. Currents as large as
20 mA will not damage the device, but the current mirror on
the non-inverting input will saturate and cause a loss of mir-
ror gain at mA current levelsÐespecially at high operating
temperatures.
Unintentional signal coupling from the output to the non-in-
verting input can cause oscillations. This is likely only in
breadboard hook-ups with long component leads and can
be prevented by a more careful lead dress or by locating the
non-inverting input biasing resistor close to the IC. A quick
check of this condition is to bypass the non-inverting input
to ground with a capacitor. High impedance biasing resis-
tors used in the non-inverting input circuit make this input
lead highly susceptible to unintentional AC signal pickup.
Precautions should be taken to insure that the power supply
for the integrated circuit never becomes reversed in polarity
or that the unit is not inadvertently installed backwards in a
test socket as an unlimited current surge through the result-
ing forward diode within the IC could cause fusing of the
internal conductors and result in a destroyed unit.
Operation of this amplifier can be best understood by notic-
ing that input currents are differenced at the inverting-input
terminal and this difference current then flows through the
external feedback resistor to produce the output voltage.
Common-mode current biasing is generally useful to allow
operating with signal levels near ground or even negative as
Output short circuits either to ground or to the positive pow-
er supply should be of short time duration. Units can be
destroyed, not as a result of the short circuit current causing
metal fusing, but rather due to the large increase in IC chip
dissipation which will cause eventual failure due to exces-
sive junction temperatures. For example, when operating
a
transistors (see note 5) catch-negative input voltages at ap-
this maintains the inputs biased at
V . Internal clamp
BE
b
proximately 0.3 V but the magnitude of current flow has
DC
to be limited by the external input network. For operation at
high temperature, this limit should be approximately 100 mA.
a
e
25 C
from a well-regulated 5 V
DC
power supply at T
§
A
with a 100 kX shunt-feedback resistor (from the output to
the inverting input) a short directly to the power supply will
not cause catastrophic failure but the current magnitude will
be approximately 50 mA and the junction temperature will
This new ‘‘Norton’’ current-differencing amplifier can be
used in most of the applications of a standard IC op amp.
Performance as a DC amplifier using only a single supply is
not as precise as a standard IC op amp operating with split
supplies but is adequate in many less critical applications.
New functions are made possible with this amplifier which
are useful in single power supply systems. For example,
biasing can be designed separately from the AC gain as was
shown in the ‘‘inverting amplifier,’’ the ‘‘difference integra-
tor’’ allows controlling the charging and the discharging of
the integrating capacitor with positive voltages, and the ‘‘fre-
be above T max. Larger feedback resistors will reduce the
J
current, 11 MX provides approximately 30 mA, an open cir-
cuit provides 1.3 mA, and a direct connection from the out-
put to the non-inverting input will result in catastrophic fail-
ure when the output is shorted to Va as this then places the
base-emitter junction of the input transistor directly across
the power supply. Short-circuits to ground will have magni-
tudes of approximately 30 mA and will not cause cata-
quency doubling tachometer’’ provides a simple circuit
which reduces the ripple voltage on a tachometer output DC
voltage.
e
strophic failure at T
25 C.
§
A
3
Typical Performance Characteristics
Open Loop Gain
Voltage Gain
Voltage Gain
TL/H/7936–9
4
Typical Applications (Va 15 V
)
DC
e
Inverting Amplifier
Triangle/Square Generator
R1
TL/H/7936–3
TL/H/7936–4
b
Frequency-Doubling Tachometer
Low V
IN
V
OUT
Voltage Regulator
TL/H/7936–5
TL/H/7936–6
Non-Inverting Amplifier
Negative Supply Biasing
A
R2
R1
TL/H/7936–8
j
V
TL/H/7936–7
5
Typical Applications (Va 15 V ) (Continued)
e
DC
Low-Drift Ramp and Hold Circuit
TL/H/7936–10
Bi-Quad Active Filter
(2nd Degree State-Variable Network)
e
e
Q
50
f
O
1 kHz
TL/H/7936–11
6
Typical Applications (Va 15 V ) (Continued)
e
DC
Voltage-Controlled Current Source
(Transconductance Amplifier)
TL/H/7936–12
b
Hi V , Lo (V
IN IN
V ) Self-Regulator
O
TL/H/7936–13
Ground-Referencing a Differential Input Signal
TL/H/7936–14
7
Typical Applications (Va 15 V ) (Continued)
e
DC
Voltage Regulator
Fixed Current Sources
TL/H/7936–15
TL/H/7936–16
R2
Voltage-Controlled Current Sink
(Transconductance Amplifier)
Buffer Amplifier
TL/H/7936–18
TL/H/7936–17
Tachometer
e
V
ODC
A f
IN
*Allows V to go to zero.
O
TL/H/7936–19
8
Typical Applications (Va 15 V ) (Continued)
e
DC
Low-Voltage Comparator
Power Comparator
TL/H/7936–21
TL/H/7936–20
Comparator
Schmitt-Trigger
TL/H/7936–22
TL/H/7936–23
Square-Wave Oscillator
Pulse Generator
TL/H/7936–24
TL/H/7936–25
Frequency Differencing Tachometer
e
b
f )
2
V
ODC
A (f
1
TL/H/7936–26
9
Typical Applications (Va 15 V ) (Continued)
e
DC
Frequency Averaging Tachometer
a
f )
2
1
TL/H/7936–27
Squaring Amplifier (W/Hysteresis)
Bi-Stable Multivibrator
TL/H/7936–29
TL/H/7936–28
Differentiator (Common-Mode
a
‘‘OR’’ Gate
Biasing Keeps Input at
V
)
BE
TL/H/7936–31
TL/H/7936–30
‘‘AND’’ Gate
Difference Integrator
TL/H/7936–32
TL/H/7936–33
10
Typical Applications (Va 15 V ) (Continued)
e
DC
Low Pass Active Filter
e
f
O
TL/H/7936–34
Staircase Generator
V
BE
Biasing
TL/H/7936–35
TL/H/7936–36
Bandpass Active Filter
e
f
1 kHz
25
o
e
Q
TL/H/7936–37
11
Typical Applications (Va 15 V ) (Continued)
e
DC
Low-Frequency Mixer
TL/H/7936–38
Free-Running Staircase Generator/Pulse Counter
TL/H/7936–39
12
Typical Applications (Va 15 V ) (Continued)
e
DC
Supplying I with Aux. Amp
IN
(to Allow Hi-Z Feedback Networks)
TL/H/7936–40
One-Shot Multivibrator
TL/H/7936–41
Non-Inverting DC Gain to (0,0)
TL/H/7936–42
13
Typical Applications (Va 15 V ) (Continued)
e
DC
Channel Selection by DC Control (or Audio Mixer)
TL/H/7936–43
14
Typical Applications (Va 15 V ) (Continued)
e
DC
Power Amplifier
TL/H/7936–44
One-Shot with DC Input Comparator
a
j
Trips at V
0.8 V
IN
V
must fall 0.8 Va prior to t
IN
2
TL/H/7936–45
High Pass Active Filter
TL/H/7936–46
15
Typical Applications (Va 15 V ) (Continued)
e
DC
a
Sample-Hold and Compare with New
V
IN
TL/H/7936–47
Sawtooth Generator
TL/H/7936–48
16
Typical Applications (Va 15 V ) (Continued)
e
DC
Phase-Locked Loop
TL/H/7936–49
Boosting to 300 mA Loads
TL/H/7936–50
17
Split-Supply Applications (Va
15 V & Vb
DC
)
e a
e b
15 V
DC
Non-Inverting DC Gain
TL/H/7936–51
AC Amplifier
TL/H/7936–52
18
Physical Dimensions inches (millimeters)
Small Outline Package (M)
Order Number LM3900M
NS Package Number M14A
19
Physical Dimensions inches (millimeters) (Continued)
Molded Dual-In-Line Package (N)
Order Number LM2900N, LM3900N or LM3301N
NS Package Number N14A
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