LM2904PT [STMICROELECTRONICS]
LOW POWER DUAL OPERATIONAL AMPLIFIERS; 低功耗双运算放大器
| 型号： | LM2904PT |
| 厂家： | 
ST |
| 描述： | LOW POWER DUAL OPERATIONAL AMPLIFIERS |
| 文件： | 总15页 (文件大小：452K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LM2904
Low Power Dual Operational Amplifier
■ Internally frequency compensated
■ Large DC voltage gain: 100dB
■ Wide bandwidth (unity gain): 1.1MHz
(temperature compensated)
N
DIP8
(Plastic Package)
■ Very low supply current/op (500µA) essentially
independent of supply voltage
■ Low input bias current: 20nA (temperature
compensated)
■ Low input offset current: 2nA
■ Input common-mode voltage range includes
D
SO-8
ground
(Plastic Micropackage)
■ Differential input voltage range equal to the
power supply voltage
■ Large output voltage swing 0V to (V - 1.5V)
CC
P
Description
TSSOP8
(Thin Shrink Small Outline Package)
This circuit consists of two independent, high
gain, internally frequency compensated which
were designed specifically for automotive and
industrial control system. It operates 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.
S
Mini SO-8
(Mini SO Package)
Application areas include transducer amplifiers,
DC gain blocks and all the conventional op-amp
circuits which now can be more easily
implemented in single power supply systems. For
example, these circuits can be directly supplied
with off the standard +5V which is used in logic
systems and will easily provide the required
interface electronics without requiring any
additional power supply.
Pin Connection (top view)
1
2
3
4
8
7
6
5
-
+
-
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.
+
Rev 3
1/15
October 2005
www.st.com
15
LM2904
Order Codes
Part Number
Temperature Range
Package
Packing
Marking
LM2904N
DIP8
SO-8
Tube
LM2904N
LM2904D/DT
Tube or Tape & Reel
2904
TSSOP8
(Thin Shrink Outline Package)
LM2904PT
Tape & Reel
LM2904ST
-40, +125°C
mini SO-8
Tape & Reel
Tube or Tape & Reel
Tape & Reel
K403
LM2904YD/YDT
LM2904YPT
SO-8 (automotive grade level)
TSSOP8 (automotive grade level)
2904Y
minI SO-8
(automotive grade level)
LM2904YST
Tape & Reel
k409
2/15
LM2904
Absolute Maximum Ratings
1
Absolute Maximum Ratings
Table 1.
Symbol
Key parameters and their absolute maximum ratings
Parameter
Value
+32
Unit
V
V
Supply Voltage
CC
V
Differential Input Voltage
Input Voltage
+32
V
id
V
-0.3 to +32
V
I
(1)
Output Short-circuit to Ground
(2)
p
500
50
mW
mA
°C
Power Dissipation
tot
(3)
I
in
Input Current
T
Operating Free-Air Temperature Range
Storage Temperature Range
-40 to +125
-65 to +150
oper
T
°C
stg
Thermal Resistance Junction to Ambient
125
120
85
SO-8
TSSOP8
DIP8
R
°C/W
thja
190
MiniSO-8
(4)
300
200
1.5
V
V
HBM: Human Body Model
(5)
ESD
MM: Machine Model
CDM: Charged Device Model
kV
+
1. Short-circuits from the output to V can cause excessive heating if Vcc > 15V. The maximum
CC
output current is approximately 40mA, independent of the magnitude of V
Destructive dissipation can result from simultaneous short-circuits on all amplifiers.
.
CC
2. Power dissipation must be considered to ensure maximum junction temperature (Tj) is not
exceeded.
3. This input current only exists when the voltage at any of the input leads is driven negative. It is due
to the collector-base junction of the input PNP transistor becoming forward biased and thereby
acting as input diodes 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
voltage level (or to ground for a large overdrive) for the time duration than an input is driven
CC
negative. This is not destructive and normal output will set up again for input voltage higher than -
0.3V.
4. Human body model, 100pF discharged through a 1.5kΩ resistor into pin of device.
5. Machine model ESD, a 200pF cap is charged to the specified voltage, then discharged directly into
the IC with no external series resistor (internal resistor < 5Ω), into pin to pin of device.
3/15
Typical Application Schematic
LM2904
2
Typical Application Schematic
Figure 1. Schematic Diagram (1/2 LM2904)
VCC
µ
6 A
4 A
µ
100
A
µ
Q5
Q7
Q6
CC
Q3
Q2
Inverting
input
Q1
Q4
R SC
Q11
Non-inverting
input
Output
Q13
Q10
Q12
Q8
Q9
m
A
50
GND
4/15
LM2904
Electrical Characteristics
3
Electrical Characteristics
+
-
Table 2.
Symbol
V
= 5V, V = Ground, V = 1.4V, T = 25°C (unless otherwise specified)
amb
CC
cc
O
Parameter
Min.
Typ.
Max.
Unit
(1)
Input Offset Voltage
V
T
= 25°C
2
7
9
mV
io
amb
min
T
≤ T
≤ T
max.
amb
Input Offset Current
T
= 25°C
I
2
30
40
nA
nA
amb
min
io
T
≤ T
≤ T
amb
max.
(2)
Input Bias Current
T
T
I
= 25°C
20
150
200
ib
amb
min
≤ T
≤ T
max.
amb
Large Signal Voltage Gain
+
V
= +15V,R =2kΩ, V = 1.4V to 11.4V
L o
V/
CC
A
vd
50
25
100
100
0.7
mV
T
T
= 25°C
amb
min
≤ T
≤ T
max.
amb
Supply Voltage Rejection Ratio (R ≤10kΩ)
S
T
T
= 25°C
SVR
65
65
dB
amb
min
≤ T
≤ T
max.
amb
Supply Current, all Amp, no load
I
T
T
= 25°C, V = +5V
CC
1.2
2
mA
cc
amb
min
≤ T
≤ T
, V = +30V
max. CC
amb
(3)
Input Common Mode Voltage Range (V = +30V)
cc
+
V
-1.5
V
0
0
V
T
T
= 25°C
CC
icm
amb
min
+
≤ T
≤ T
max.
V
-2
amb
CC
Common-mode Rejection Ratio (R = 10kΩ)
S
T
T
= 25°C
CMR
70
60
85
40
dB
amb
min
≤ T
≤ T
max.
amb
Output Short-circuit Current
= +15V, V = +2V, V = +1V
I
source
V
20
60
mA
CC
o
id
Output Sink Current
I
V
V
= 2V, V = +5V
10
12
20
50
mA
µA
sink
O
O
CC
= +0.2V, V = +15V
CC
Output Voltage Swing (R = 2kΩ
L
+
V
-1.5
V
T
T
= 25°C
0
0
V
CC
OPP
amb
min
+
≤ T
≤ T
max
V
-2
amb
CC
5/15
Electrical Characteristics
LM2904
Symbol
Parameter
High Level Output Voltage (V + 30V)
Min.
Typ.
Max.
Unit
cc
T
T
T
T
= +25°C, R = 2kΩ
L
26
26
27
27
amb
min
V
≤ T
≤ T
27
28
V
OH
amb max.
= +25°C, R = 10kΩ
amb
min
L
≤ T
≤ T
max.
amb
Low Level Output Voltage (R = 10kΩ)
L
V
T
T
= +25°C
mV
OL
amb
min
5
20
20
≤ T
≤ T
max
amb
Slew Rate
= 15V, Vi = 0.5 to 3V, R = 2kΩ, C = 100pF,
V
SR
V/µs
MHz
%
cc
L
L
0.3
0.7
0.6
1.1
unity gain
Gain Bandwidth Product f = 100kHz
GBP
THD
V
= 30V, V = 10mV, R = 2kΩ, C = 100pF
in L L
cc
Total Harmonic Distortion
f = 1kHz, A = 20dB, R = 2kΩ, V = 2Vpp,
V
L
o
C = 100pF, V = 30V
0.02
7
L
cc
µV/
°C
DV
Input Offset Voltage Drift
Input Offset Current Drift
30
io
pA/
°C
DI
10
300
io
(4)
Channel Separation
1kHz ≤ f ≤ 20kHz
V
/V
dB
O1 O2
120
+
+
1.
V
= 1.4V, R = 0Ω, 5V < V
< 30V, 0V < V < V
- 1.5V
O
S
CC
ic
CC
2. 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 charge change exists on the input lines
3. 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
either or both inputs can go to +32V without damage.
–1.5V, but
CC
4. 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 frequencies.
6/15
LM2904
Electrical Characteristics
Figure 2. Open loop frequency response
Figure 3. Large signal frequency response
(NOTE 3)
OPEN LOOP FREQUENCY RESPONSE
140
LARGE SIGNAL FREQUENCY RESPONSE
20
10M
Ω
Ω
100k
0.1
F
Ω
1k
µ
120
100
+15V
-
V
-
CC
V
VO
O
V
15
10
V
I
I
V
/2
CC
Ω
2k
+
+7V
+
80
60
40
V
CC
-55°C
= 30V &
T
amb
+125°C
5
0
20
0
V
-55°C
= +10 to + 15V &
CC
T
amb
+125°C
1.0 10
100
1k
10k 100k 1M 10M
1k
10k
100k
1M
FREQUENCY (Hz)
FREQUENCY (Hz)
Figure 4. Voltage follower pulse response
Figure 5. Output characteristics
OUTPUT CHARACTERISTICS
VOLAGE FOLLOWER PULSE RESPONSE
4
10
1
VCC = +5V
VCC = +15V
VCC = +30V
RL 2 k
VCC = +15V
Ω
3
2
1
0
3
2
1
v
cc
v
/2
cc
-
0.1
I
O
V
+
O
T
= +25°C
10
amb
0.01
0
10
20
30
40
0,001
0,01
0,1
1
100
TIME (µs)
OUTPUT SINK CURRENT (µ A)
Figure 6. Voltage follower pulse response
Figure 7. Output characteristics
VOLTAGE FOLLOWER PULSSE RESPONSE
OUTPUT CHARACTERISTICS
(SMALL SIGNAL)
8
V
500
CC
7
+
450
+
-
V
V
/2
CC
e
6
O
O
e
l
-
50pF
5
I
400
350
300
250
O
Input
4
Independent of V
CC
Output
3
2
1
T
= +25°C
amb
T
V
= +25°C
= 30 V
amb
CC
0
1
2
3
4
5
6
7
8
0,01
0,1
1
10
100
0,001
m
TIME ( s)
OUTPUT SOURCE CURRENT (mA)
7/15
Electrical Characteristics
Figure 8. Input current
LM2904
Figure 9. Current limiting
CURRENT LIMITING (Note 1)
INPUT CURRENT (Note 1)
90
80
70
60
90
80
70
60
-
V = 0 V
I
I
O
V
V
= +30 V
= +15 V
CC
+
50
40
50
40
CC
30
20
10
0
30
20
10
0
V
= +5 V
CC
-55 -35 -15
5
25 45 65 85 105 125
-55 -35 -15
5
25 45 65 85 105 125
TEMPERATURE (°C)
TEMPERATURE (°C)
Figure 10. Input voltage range
Figure 11. Supply current
INPUT VOLTAGE RANGE
15
SUPPLY CURRENT
4
3
2
1
V
CC
I
D
mA
-
10
Négative
+
Positive
5
T
= 0°C to +125°C
amb
T
= -55°C
amb
0
5
10
15
0
10
20
30
POWER SUPPLY VOLTAGE (±V)
POSITIVE SUPPLY VOLTAGE (V)
Figure 12. Positive supply voltage
Figure 13. Positive supply voltage
100
160
R L = 20k
Ω
75
50
25
120
R L = 2k
Ω
80
40
Tamb= +25°C
0
10
20
30
40
0
10
20
30
POSITIVE SUPPLY VOLTAGE (V)
POSITIVE SUPPLY VOLTAGE (V)
8/15
LM2904
Electrical Characteristics
Figure 15. Gain bandwidth product
Figure 14. Positive supply voltage
160
1.5
1.35
1.2
R L = 20k
Ω
120
1.05
0.9
R L = 2k
Ω
80
40
VCC
=
15V
0.75
0.6
0.45
0.3
0.15
0
0
10
20
30
-55-35-15 5 25 45 65 85 105 125
POSITIVE SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
Figure 16. Power supply rejection ratio
Figure 17. Common mode rejection ratio
115
110
105
100
95
115
110
SVR
105
100
95
90
85
80
75
70
65
90
85
80
75
70
65
-55-35-15 5 25 45 65 85 105 125
60
-55-35-15 5 25 45 65 85 105 125
60
TEMPERATURE (°C)
TEMPERATURE (°C)
Typical single - supply applications
Figure 18. AC coupled inverting amplifier
Figure 19. AC coupled non-inverting amplifier
Rf
R1
R2
1M
100k
Ω
Rf
100k
Ω
Ω
A
= -
V
R2
R1
A = 1 +
R1
V
R1
10kΩ
(as shown A = -10)
V
(as shown A = 11)
V
CI
C1
µ
0.1 F
Co
Co
1/2
LM2904
2VPP
1/2
LM2904
0
2VPP
eo
0
eo
CI
R
B
R
L
10kΩ
R
B
R
L
6.2k
Ω
6.2k
Ω
10k
Ω
eI
R2
100k
R3
~
VCC
R3
1M
Ω
Ω
100k
eI
Ω
~
R4
100k
R5
Ω
VCC
C1
C2
µ
10 F
µ
10 F
100k
Ω
9/15
Electrical Characteristics
LM2904
Figure 20. Non-inverting DC gain
Figure 21. DC summing amplifier
e1
100k
Ω
R2
R1
A
V= 1 +
10k
Ω
A
(As shown V = 101)
eO
eO
1/2
LM2904
1/2
LM2904
+5V
100k
Ω
e2
e3
100k
100k
Ω
Ω
R2
Ω
1M
100k
Ω
R1
10k
Ω
e4
100k
Ω
eo = e1 + e2 - e3 - e4
where (e1 + e2) ≥ (e3 + e4)
to keep eo ≥ 0V
0
eI
(mV)
Figure 22. High input Z, DC differential
amplifier
Figure 23. Using symmetrical amplifiers to
reduce input current
1/2
LM2904
eo
I I
I
B
eI
I
I
B
R4
100k
R2
100k
2N 929
Ω
Ω
R1
100k
Ω
R3
100k
Ω
0.001 F
µ
1/2
LM2904
1/2
LM2904
V
o
+V1
+V2
I
B
B
1/2
LM2904
If R1 = R5 and R3 = R4 = R6 = R7
2R1
R2
Ω
3M
I
eo = [ 1 +
] (e2 - e1)
As shown eo = 101 (e2 - e1)
Input current compensation
B
1.5M
Ω
Figure 24. Low drift peak detector
Figure 25. Active bandpass filter
R1
100k
I
B
Ω
C1
330pF
1/2
LM2904
eo
1/2
LM2904
R2
100k
I
B
R5
470k
Ω
1/2
LM2904
Ω
+V1
Zo
R4
10M
C
2I
Ω
eI
B
1/2
LM2904
µ
1 F
C2
330pF
ZI
R6
470k
2N 929
R3
100k
Ω
0.001
µ
F
Ω
Vo
1/2
LM2904
R7
100k
I
2I
B
B
Ω
VCC
1/2
LM2904
R
1M
C3
10
3R
3M
R8
100k
Ω
µ
F
Ω
Ω
Fo = 1kHz
Q = 50
Av = 100 (40dB)
Input current
compensation
I
B
10/15
LM2904
Package Mechanical Data
4
Package Mechanical Data
®
In order to meet environmental requirements, ST offers these devices in ECOPACK packages.
These packages have a Lead-free second level interconnect. The category of second level
interconnect is marked on the package and on the inner box label, in compliance with JEDEC
Standard JESD97. The maximum ratings related to soldering conditions are also marked on
the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at:
www.st.com.
4.1
DIP8 Package
Plastic DIP-8 MECHANICAL DATA
mm.
TYP
3.3
inch
TYP.
0.130
DIM.
MIN.
MAX.
MIN.
MAX.
A
a1
B
0.7
1.39
0.91
0.028
0.055
0.036
1.65
1.04
0.065
0.041
B1
b
0.5
0.020
b1
D
E
0.38
0.5
9.8
0.015
0.020
0.386
8.8
0.346
0.100
0.300
0.300
e
2.54
7.62
7.62
e3
e4
F
7.1
4.8
0.280
0.189
I
L
3.3
0.130
Z
0.44
1.6
0.017
0.063
P001F
11/15
Package Mechanical Data
LM2904
4.2
SO-8 Package
SO-8 MECHANICAL DATA
mm.
inch
TYP.
DIM.
MIN.
TYP
MAX.
MIN.
MAX.
A
A1
A2
B
1.35
0.10
1.10
0.33
0.19
4.80
3.80
1.75
0.053
0.069
0.25
1.65
0.51
0.25
5.00
4.00
0.04
0.010
0.065
0.020
0.010
0.197
0.157
0.043
0.013
0.007
0.189
0.150
C
D
E
e
1.27
0.050
H
5.80
0.25
0.40
6.20
0.50
1.27
0.228
0.010
0.016
0.244
0.020
0.050
h
L
k
˚ (max.)
8
ddd
0.1
0.04
0016023/C
12/15
LM2904
Package Mechanical Data
4.3
TSSOP8 Package
TSSOP8 MECHANICAL DATA
mm.
inch
DIM.
MIN.
TYP
MAX.
1.2
MIN.
TYP.
MAX.
0.047
0.006
0.041
0.012
0.008
0.122
0.260
0.177
A
A1
A2
b
0.05
0.80
0.19
0.09
2.90
6.20
4.30
0.15
1.05
0.30
0.20
3.10
6.60
4.50
0.002
0.031
0.007
0.004
0.114
0.244
0.169
1.00
0.039
c
D
3.00
6.40
4.40
0.65
0.118
0.252
0.173
0.0256
E
E1
e
K
0˚
8˚
0˚
8˚
L
0.45
0.60
1
0.75
0.018
0.024
0.039
0.030
L1
0079397/D
13/15
Package Mechanical Data
LM2904
4.4
Mini SO-8 Package
14/15
LM2904
Revision History
5
Revision History
Date
Revision
Changes
Jan. 2002
1
Initial release.
1 - PPAP references inserted in the datasheet see table Order Codes
on page 2
2 - ESD protection inserted in Table 1.: Key parameters and their
absolute maximum ratings on page 4.
June 2005
Oct. 2005
2
3
PPAP part numbers added in table Order Codes on page 2.
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences
of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is
granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are
subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products
are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.
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15/15
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