LM2904.PDF
(
153 KB
)
Pobierz
LOW POWER DUAL OP-AMPS
LM2904
LOW POWER DUAL OPERATIONAL AMPLIFIERS
.
INTERNALLY FREQUENCY COMPENSATED
.
VERY LOW SUPPLY CURRENT/AMPLI
(500
m
A) - ESSENTIALLY INDEPENDENT OF
SUPPLY VOLTAGE
.
LOW INPUT BIAS CURRENT : 20nA
(temperature compensated)
.
LOW INPUT OFFSET CURRENT : 2nA
.
INPUT COMMON-MODE VOLTAGE RANGE
INCLUDES GROUND
.
DIFFERENTIAL INPUT VOLTAGE RANGE
EQUAL TO THE POWER SUPPLY VOLTAGE
N
DIP8
(Plastic Package)
D
SO8
(Plastic Micropackage)
.
LARGE OUTPUT VOLTAGE SWING 0V TO
(V
CC
–1.5V)
ORDER CODES
Part
Number
Temperature
Range
Package
N
D
LM2904
–40
o
C, +125
o
C
•
•
DESCRIPTION
This circuit consists of two independent, high gain,
internally frequency compensated which were
designed specifically to operate from a single power
supply over a wide range of voltages. The low power
supply drain is independent of the magnitude of the
power supply voltage.
Application areas include transducer amplifiers, dc
gain blocks and all the conventional op-amp circuits
which now can be more easilyimplemented in single
power supply systems. For example, these circuits
can be directly operatedoff the standard+ 5V power
supply voltage which is used in logic systems and
will easily provide the required interface electronics
without requiring any additional power supply.
In the linear mode the input common-mode voltage
range includes ground and the output voltage can
also swing to ground, even though operated from
only a single power supply voltage.
The gain-bandwidth product is temperature
compensated.
Example :
LM2904D
PIN CONNECTIONS
(top views)
1
8
2
-
7
3
+
-
6
4
+
5
1 - Output 1
2 - Inverting input 1
3 - Non-inverting input 1
4-V
CC
-
5 - Non-inverting input 2
6 - Inverting input 2
7 - Ouput 2
8-V
CC
+
October 1994
1/11
.
LARGE DC VOLTAGE GAIN : 100dB
.
WIDE BANDWIDTH (unity gain) : 1.1MHz
(temperature compensated)
LM2904
SCHEMATIC DIAGRAM
(1/2 LM2904)
V
CC
6
m
A
4
A
100
m
A
Q5
C
C
Q6
Inverting
input
Q2
Q3
Q7
Q1
Q4
R
SC
Non-inverting
input
Q11
Output
Q13
Q10
Q12
Q8
Q9
50
m
A
GND
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
V
CC
Supply Voltage
+32
V
V
i
Input Voltage
–0.3 to +32
V
V
id
Differential Input Voltage
+32
V
Output Short-circuit Duration - (note 2)
Infinite
P
tot
Power Dissipation
500
mW
I
in
Input Current - (note 1)
50
mA
T
oper
Operating Free-air Temperature Range
–40 to +125
o
C
T
stg
Storage Temperature Range
–65 to +150
o
C
2/11
m
LM2904
ELECTRICAL CHARACTERISTICS
V
CC
+
=
+5V, V
CC
–
=
Ground, V
O
=
1.4V, T
amb
=25
o
C (unless otherwise specified)
Symbol
Parameter
Min.
Typ.
Max.
Unit
V
io
Input Offset Voltage - (note 3)
T
amb
=25
o
C
T
min.
mV
2
7
9
3
T
amb
3
T
max
.
I
io
Input Offset Current
T
amb
=25
o
C
T
min.
nA
2
30
40
3
T
amb
3
T
max
.
I
ib
Input Bias Current - (note 4)
T
amb
=25
o
C
T
min.
nA
20
150
200
3
T
amb
3
T
max
.
A
vd
Large Signal Voltage Gain
(V
CC
= +15V, R
L
=2k
V/mV
W
,V
O
= 1.4V to 11.4V)
T
amb
=25
o
C
T
min.
50
25
100
3
T
amb
3
T
max
.
SVR
(V
CC
+
= 5 to 30V)
T
amb
=25
o
C
T
min.
W
)
dB
3
T
amb
3
T
max
.
65
65
100
I
CC
Supply Current, all Amp, no Load
V
CC
= +5V, T
min.
mA
3
T
amb
3
T
max
.
0.7
1.2
2
V
CC
= +30V, T
min.
3
T
amb
3
T
max
.
V
icm
Input Common Mode Voltage Range
(V
CC
= +30V) - (note 6)
T
amb
=25
o
C
T
min
.
V
3
T
amb
3
T
max
.
0
0
V
CC
+
–1.5
V
CC
+
–2
CMR
Common-mode Rejection Ratio (R
S
= 10k
W
)
dB
70
60
85
3
T
amb
3
T
max
.
I
O
Output Short Circuit Current
(V
CC
= +15V, V
o
= 2V, V
id
= +1V)
20
40
60
mA
I
sink
Output Current Sink (V
id
= -1V)
V
CC
= +15V, V
O
=2V
V
CC
= +15V, V
O
= +0.2V
10
12
20
50
mA
m
A
V
OPP
Output Voltage Swing (R
L
=2k
W
)
V
CC
+
–1.5
V
CC
+
–2
V
0
0
3
T
amb
3
T
max
.
V
OH
High Level Output Voltage (V
CC
+
= 30V)
T
amb
=25
o
C
V
R
L
=2k
W
26
26
27
27
27
T
min
.
3
T
amb
3
T
max
.
T
amb
=25
o
C
R
L
= 10k
W
28
T
min.
3
T
amb
3
T
max
.
V
OL
Low Level Output Voltage (R
L
= 10k
W
)
T
amb
=25
o
C
T
min
.
mV
5
20
20
3
T
amb
3
T
max.
SR
Slew Rate (V
CC
= 15V, V
I
= 0.5 to 3V, R
L
=2k
W
,
V/
m
s
0.3
0.6
GBP
Gain Bandwidth Product
(V
CC
= 30V, f = 100kHz, T
amb
=25
o
C,
V
in
= 10mV, R
L
=2k
MHz
W
,C
L
= 100pF)
0.7
1.1
THD
,V
CC
= 30V,
C
L
= 100pF, T
amb
=25
o
C, V
O
=2
PP
)
W
0.02
%
3/11
Supply Voltage Rejection Ratio (R
S
= 10k
T
amb
=25
o
C
T
min.
T
amb
=25
o
C
T
min.
C
L
= 100pF, T
amb
=25
o
C, unity gain)
Total Harmonic Distortion
(f = 1kHz, A
v
= 20dB, R
L
=2k
LM2904
ELECTRICAL CHARACTERISTICS
(continued)
Symbol
Parameter
Min.
Typ.
Max.
Unit
DV
io
Input Offset Voltage Drift
7
30
m
V/
o
C
DI
io
Input Offset Current Drift
10
300
pA/
o
C
V
O1
/V
O2
Channel Separation (note 5)
1kHz
3
3
20kHz
120
dB
Notes : 1. This input current only exist when the voltage at any of the input leads is driven negative. It is due to the collec-
tor-base junction of the input PNP transistor becoming forward biased and thereby acting as input diode clamps.
In addition to this diode action, there is also NPN parasitic action on the IC chip. This transistor action can cause
the output voltages of the Op-amps to go to the V
CC
voltage level (or to ground for a large overdrive) for the time
duration that an input is driven negative.
This is not destructive and normal output will set up again for input voltage higher than –0.3V.
2. Short-circuits from the output to V
CC
can cause excessive heating if V
CC
+
> 15V. The maximum output current is
approximatively 40mA independent of the magnitude of V
CC
. Destructive dissipation can result from simultaneous
short-circuits on all amplifi ers.
3. V
O
<
30V, 0 < V
ic
<
V
CC
+
– 1.5V.
4. The direction of the input current is out of the IC. This current is essentially constant, independent of the state of
the output so no loading change exists on the input lines.
5. Due to the proximity of external components insure that coupling is not originating via stray capacitance between
these external parts. This typically can be detected as this type of capacitance increases at higher frequences.
6. The input common-mode voltage of either input signal voltage should not be allowed to go negative by more than
0.3V. The upper end of the common-mode voltage range is V
CC
+
=
1.4V, R
S
=0
W
,5V <V
CC
+
– 1.5V.
But either or both inputs can go to +32V without damage.
4/11
f
2904-04.EPS
Plik z chomika:
maciejek62
Inne pliki z tego folderu:
LM16X21B.PDF
(33 KB)
LM78.PDF
(426 KB)
LM78L05.PDF
(196 KB)
LM101.PDF
(145 KB)
LM101,201,301.PDF
(145 KB)
Inne foldery tego chomika:
ADxxx
CMOS -40xx
CMOS -45xx
KB
KC
Zgłoś jeśli
naruszono regulamin