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LM2904W
LOW POWER DUAL OPERATIONAL AMPLIFIERS
s INTERNALLY FREQUENCY COMPENSATED s LARGE DC VOLTAGE GAIN : 100dB s WIDE BANDWIDTH (unity gain) : 1.1MHz s VERY LOW SUPPLY CURRENT/OP (500A) s LOW INPUT BIAS CURRENT : 20nA s LOW INPUT OFFSET CURRENT : 2nA s INPUT COMMON-MODE VOLTAGE RANGE
INCLUDES GROUND s DIFFERENTIAL INPUT VOLTAGE RANGE EQUAL TO THE POWER SUPPLY VOLTAGE s LARGE OUTPUT VOLTAGE SWING 0V TO (VCC - 1.5V) s ESD INTERNAL PROTECTION : 2kV DESCRIPTION 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. 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 ssystems. 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. In the linear mode the input common-mode voltage range includes ground and the output voltage can also swing to groung, even though operated from only a single power supply voltage. ORDER CODE
Part Number LM2904W Temperature Range -40C, +125C Package N * D * P * D SO8 (Plastic Micropackage)
(temperature compensated) (temperature compensated)
N DIP8 (Plastic Package)
P TSSOP8 (Thin Shrink Small Outline Package)
PIN CONNECTIONS (top view)
1 2 3 4 + +
8 7 6 5
N = Dual in Line Package (DIP) D = Small Outline Package (SO) - also available in Tape & Reel (DT) P = Thin Shrink Small Outline Package (TSSOP) - only available in Tape & Reel (PT)
September 2003
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LM2904W
SCHEMATIC DIAGRAM (1/2 LM2904W)
ABSOLUTE MAXIMUM RATINGS
Symbol VCC Vid VI ESD ptot Iin Toper Tstg
1. 2.
Parameter Supply Voltage Differential Input Voltage Input Voltage Human Body Model 3) Output Short-circuit Duration1) Power Dissipation Input Current
2)
Value +32 -0.3v to Vcc + 0.3 -0.3v to Vcc + 0.3 2 Infinite 500 50 -40 to +125 -65 to +150
Unit V V V kV s mW mA C C
Operating Free-Air Temperature Range Storage Temperature Range
Short-circuits from the output to Vcc can cause excessive heating if Vcc + > 15V. The maximum output current is approximately 40mA, independent of the magnitude of Vcc . Destructive dissipation can result from simultaneous short-circuits on all amplifiers. 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 VCC voltage level (or to ground for a large overdrive) for the time duration than an input is driven negative. This is not destructive and normal output will set up again for input voltage higher than -0.3V Human body model, 100pF discharged through a 1.5K resistor, into pin to pin of device.
3)
OPERATING CONDITIONS
Symbol VCC
+
Parameter Supply Voltage Common Mode Input Voltage Range
Value 3 to 30 VCC+ - 1.5
Unit V V
Vicm
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LM2904W
ELECTRICAL CHARACTERISTICS VCC+ = 5V, V cc- = Ground, VO = 1.4V, Tamb = 25C (unless otherwise specified)
Symbol Vio Parameter Input Offset Voltage 1) Tamb = 25C Tmin Tamb Tmax. Input Offset Current Tamb = 25C Tmin Tamb Tmax. Input Bias Current 2) Tamb = 25C Tmin Tamb Tmax. Large Signal Voltage Gain VCC+ = +15V,R L=2k, Vo = 1.4V to 11.4V Tamb = 25C Tmin Tamb Tmax. Supply Voltage Rejection Ratio (RS 10k) Tamb = 25C Tmin Tamb Tmax. Supply Current, all Amp, no load VCC = +5V Tamb = 25C Tmin Tamb Tmax. VCC = +30V Input Common Mode Voltage Range (Vcc= +30V)3) Tamb = 25C Tmin Tamb Tmax. Common-mode Rejection Ratio (RS = 10k) Tamb = 25C Tmin Tamb Tmax. Output Short-circuit Current VCC = +15V, Vo = +2V, Vid = +1V Output Sink Current VO = 2V VO = +0.2V Output Voltage Swing (RL = 2k Tamb = 25C Tmin Tamb Tmax High Level Output Voltage (Vcc + 30V) RL = 2k Tamb = +25C Tmin Tamb Tmax. Tamb = +25C RL = 10k Tmin Tamb Tmax. Low Level Output Voltage (RL = 10k) Tamb = +25C Tmin Tamb Tmax Slew Rate Vcc = 15V, Vi = 0.5 to 3V, RL = 2k, CL = 100pF, unity gain Gain Bandwidth Product f = 100kHz Vcc = 30V,Vin = 10mV, RL = 2k, CL = 100pF VCC = +5V VCC = +15V 0 0 70 60 20 10 12 0 0 26 26 27 27 85 Min. Typ. 2 Max. 7 9 30 40 150 200 Unit mV
Iio
2
nA
Iib
20
nA
Avd
50 25 65 65
100
V/mV
SVR
100
dB
Icc
0.7
1.2 2 VCC+ -1.5 VCC+ -2
mA
Vicm
V
CMR Isource Isink
dB
40 20 50
60
mA mA
VOPP
VCC+ -1.5 VCC+ -2
V
VOH
27 28
V
VOL
5
20 20
mV
SR GBP
V/s 0.3 0.7 0.6 1.1 MHz
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LM2904W
Symbol THD DVio DIio VO1/VO2
1. 2. 3. 4.
Parameter Total Harmonic Distortion f = 1kHz, AV = 20dB, RL = 2k, Vo = 2Vpp, CL = 100pF, Vcc = 30V Input Offset Voltage Drift Input Offset Current Drift Channel Separation 1kHz f 20kHz
4)
Min.
Typ.
Max.
Unit %
0.02 7 10 120 30 300 V/C pA/C dB
VO = 1.4V, RS = 0, 5V < VCC+ < 30V, 0V < Vic < VCC+ - 1.5V 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 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 VCC+ -1.5V, but either or both inputs can go to +32V without damage. 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.
OPEN LOOP FREQUENCY RESPONSE (NOTE 3)
140
10M
VOLAGE FOLLOWER PULSE RESPONSE
4 RL 2 k VCC = +15V
120
0.1F VCC VI VCC/2 + VO
OUTPUT VOLTAGE (V) INPUT VOLTAGE (V)
3 2 1 0 3
VOLTAGE GAIN (dB)
100 80 60 40 20 0
1.0 10 100
VCC = 30V & -55C Tamb +125C
VCC = +10 to + 15V & -55C Tamb +125C 1k 10k 100k 1M 10M
2 1
0 10 20 30 40
FREQUENCY (Hz)
TIME (s)
LARGE SIGNAL FREQUENCY RESPONSE
20
100k 1k +15V VO +7V + 2k
OUTPUT CHARACTERISTICS
10 VCC = +5V VCC = +15V VCC = +30V 1
v cc v cc /2 IO + VO
OUTPUT SWING (Vpp)
15
VI
10
OUTPUT VOLTAGE (V)
0.1
5
0
1k 10k 100k 1M
0.01
0,001 0,01 0,1
Tamb = +25C 1 10 100
FREQUENCY (Hz)
OUTPUT SINK CURRENT ( A)
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LM2904W
INPUT VOLTAGE RANGE
15
VOLTAGE FOLLOWER PULSSE RESPONSE (SMALL SIGNAL)
500
OUTPUT VOLTAGE (mV)
450
el
+ eO 50pF
INPUT VOLTAGE (V)
10
400 Input 350 Output 300 250
0 1 2 3 4
Negative
5
Positive
Tamb = +25C VCC = 30 V
5 6 7 8
0
5
10
15
TIME (m s)
POWER SUPPLY VOLTAGE (V) SUPPLY CURRENT
4
VCC
OUTPUT VOLTAGE REFERENCED
OUTPUT CHARACTERISTICS
8 7 6
V CC /2 + IO VO V CC
SUPPLY CURRENT (mA)
3
mA -
ID
TO VCC+ (V)
5 4 3 2 1
0,001 0,01
-
2
+
Independent of V CC T amb = +25C
1
Tamb = 0C to +125C
Tamb = -55C
0,1 1 10 100 0 10 20 30
OUTPUT SOURCE CURRENT (mA) INPUT CURRENT (Note 1)
90 80 VI = 0 V VCC = +30 V VCC = +15 V
POSITIVE SUPPLY VOLTAGE (V)
160 R L = 20k
VOLTAGE GAIN (dB)
INPUT CURRENT (mA)
70 60 50 40 30 20 10 0
-55 -35 -15
120 R L = 2k
80
40
VCC = +5 V
5
25
45
65
85 105
125
0
10
20
30
40
TEMPERATURE (C) CURRENT LIMITING (Note 1)
90
POSITIVE SUPPLY VOLTAGE (V)
100
OUTPUT CURRENT (mA)
80 70 60 50 40 30 20 10 0
-55 -35 -15 5
-
IO
INPUT CURRENT (nA)
75 50 25
+
Tamb= +25C
25
45
65
85 105
125
TEMPERATURE (C)
0 10 20 30 POSITIVE SUPPLY VOLTAGE (V)
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LM2904W
160 R L = 20k
VOLTAGE GAIN (dB)
TYPICAL SINGLE - SUPPLY APPLICATIONS AC COUPLED INVERTING AMPLIFIER
120 R L = 2k
CI R1 10k
1/2 LM2904
80
Rf 100k
Rf AV = R1 (as shown AV = -10) Co 0 eo RL 10k 2VPP
40
0
10
20
30
eI ~ R2 VCC 100k
RB 6.2k R3 100k
POSITIVE SUPPLY VOLTAGE (V)
GAIN BANDWIDTH PRODUCT (MHz)
1.5 1.35 1.2 1.05 0.9 0.75 0.6 0.45 0.3 0.15 0 -55-35-15 5 25 45 65 85 105 125 TEMPERATURE (C)
C1 0.1F
C1 10F
VCC =
15V
AC COUPLED NON-INVERTING AMPLIFIER
R1 100k
R2 1M
A V= 1 + R2 R1 (as shown A V = 11) Co 0 eo RL 10k 2VPP
CI
1/2 LM2904
POWER SUPPLY REJECTION RATIO (dB)
RB 6.2k
115 110 SVR 105 100 95 90 85 80 75 70 65 60-55-35-15 5 25 45 65 85 105 125 TEMPERATURE (C)
eI ~
R3 1M
R4 100k
VCC
C2 10F R5 100k
NON-INVERTING DC GAIN
COMMON MODE REJECTION RATIO (dB)
10k
115 110 105 100 95 90 85 80 75 70 65 60-55-35-15 5 25 45 65 85 105 125 TEMPERATURE (C)
A V = 1 + R2 R1 (As shown A V = 101)
1/2 LM2904
eO
+5V
R1 10k
e O (V)
R2 1M
0
e I (mV)
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LM2904W
DC SUMMING AMPLIFIER
e1 100k
R1 100k
HIGH INPUT Z ADJUSTABLE GAIN DC INSTRUMENTATION AMPLIFIER
100k e2 e3 100k 100k
1/2 LM2904
eO
e1
1/2 LM2904
R3 100k
R4 100k
R2 2k
Gain adjust
1/2 LM2904
eO
R5 100k
100k e4 100k
e2
1/2 LM2904
R6 100k
R7 100k
eo = e1 + e2 - e3 - e4 where (e1 + e2) (e3 + e4) to keep eo 0V
If R1 = R5 and R3 = R4 = R6 = R7 eo = [ 1 + 2R1 ] (e2 - e1) R2 As shown eo = 101 (e2 - e1)
HIGH INPUT Z, DC DIFFERENTIAL AMPLIFIER LOW DRIFT PEAK DETECTOR
R2 100k R1 100k
1/2 LM2904
R4 100k
IB
1/2
R3 100k
1/2 LM2904
1/2 LM2904
I B LM2904 1F C 2IB 2N 929 2IB R 1M Zo
eo
eI ZI
0.001 F IB 3R 3M IB
1/2 LM2904
+V1 +V2
If R1 = R5 and R3 = R4 = R6 = R7 eo = [ 1 + 2R1 ] (e2 - e1) R2 As shown eo = 101 (e2 - e1)
Vo
Input current compensation
ACTIVER BADPASS FILTER
R1 100k C1 330pF R2 100k +V1
1/2 LM2904
USING SYMMETRICAL AMPLIFIERS TO REDUCE INPUT CURRENT
R5 470k
1/2 LM2904
R4 10M C2 330pF
1/2 LM2904
I eI IB
I
1/2 I B LM2904
eo
R3 100k
R6 470k Vo R7 100k VCC R8 100k C3 10F
2N 929 0.001 F
Fo = 1kHz Q = 50 Av = 100 (40dB)
IB
IB 3M IB
1/2 LM2904
Input current compensation
1.5M
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LM2904W
PACKAGE MECHANICAL DATA 8 PINS - PLASTIC DIP
Millimeters Dim. Min. A a1 B b b1 D E e e3 e4 F i L Z 0.51 1.15 0.356 0.204 7.95 2.54 7.62 7.62 6.6 5.08 3.81 1.52 Typ. 3.32 1.65 0.55 0.304 10.92 9.75 0.020 0.045 0.014 0.008 0.313 Max. Min.
Inches Typ. 0.131 0.065 0.022 0.012 0.430 0.384 0.100 0.300 0.300 0260 0.200 0.150 0.060 Max.
3.18
0.125
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LM2904W
PACKAGE MECHANICAL DATA 8 PINS - PLASTIC MICROPACKAGE (SO)
Millimeters Dim. Min. A a1 a2 a3 b b1 C c1 D E e e3 F L M S 0.1 0.65 0.35 0.19 0.25 4.8 5.8 1.27 3.81 3.8 0.4 4.0 1.27 0.6 8 (max.) 0.150 0.016 Typ. Max. 1.75 0.25 1.65 0.85 0.48 0.25 0.5 45 (typ.) 5.0 6.2 0.189 0.228 Min. 0.004 0.026 0.014 0.007 0.010
Inches Typ. Max. 0.069 0.010 0.065 0.033 0.019 0.010 0.020 0.197 0.244 0.050 0.150 0.157 0.050 0.024
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LM2904W
PACKAGE MECHANICAL DATA 8 PINS -THIN SHRINK SMALL OUTLINE PACKAGE
k c
0.25mm .010 inch GAGE PLANE
L1
L
L
L1
E1
SEATING PLANE
A A2 A1 5 D b 8
8
C
E
4 e
5
PIN 1 IDENTIFICATION
Millimeters Dim. Min. A A1 A2 b c D E E1 e k l L L1 0.05 0.80 0.19 0.09 2.90 4.30 0 0.50 0.45 Typ. Max. 1.20 0.15 1.05 0.30 0.20 3.10 4.50 8 0.75 0.75 Min. 0.01 0.031 0.007 0.003 0.114 0.169 0 0.09 0.018
1
4
1
Inches Typ. Max. 0.05 0.006 0.041 0.15 0.012 0.122 0.177 8 0.030 0.030
1.00
0.039
3.00 6.40 4.40 0.65 0.60 0.600 1.000
0.118 0.252 0.173 0.025 0.0236 0.024 0.039
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. The ST logo is a registered trademark of STMicroelectronics All other names are the property of their respective owners. (c) 2003 STMicroelectronics - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Belgium - Brazil - Canada - China - Czech Repubic - Finland - France - Germany Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Singapore - Spain Sweden - Switzerland - United Kingdom - United States http://www.st.com
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