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PDF LM2904WH Data sheet ( Hoja de datos )
| Número de pieza | LM2904WH | |
| Descripción | Low power dual operational amplifier | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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LM2904WH
Low power dual operational amplifier
Features
■ Internally frequency-compensated
■ Large DC voltage gain: 100dB
■ Wide bandwidth (unity gain: 1.1MHz
temperature-compensated)
■ Very low supply current per operator (500µA)
■ 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
■ Large output voltage swing 0V to VCC - 1.5V
■ Internal ESD protection:
– 2kV HBM
– 200V MM
Description
This circuit consists of two independent, high-
gain, internally frequency-compensated operational
amplifiers, designed specifically for automotive
and industrial control systems. 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 systems. For
example, these circuits can be directly supplied
from standard +5V which is used in logic systems
and will easily provide the required interface
electronics without requiring any additional power
supply.
D
SO-8
(Plastic micropackage)
Wafer form
In linear mode, the input common-mode voltage
range includes ground and the output voltage can
also swing to ground, even though operated from
a single power supply.
July 2007
Rev 5
1/11
www.st.com
11
1 page  
LM2904WH
Electrical characteristics
Table 3.
Symbol
VCC+ = 5V, VCC- = Ground, Vo = 1.4V, Tamb = 25°C (unless otherwise
specified) (continued)
Parameter
Min. Typ. Max.
Unit
Slew rate (unity gain)
SR VCC+ = 15V, Vi = 0.5 to 3V, RL = 2kΩ, CL = 100pF, 0.3 0.6
Tmin ≤ Tamb ≤ Tmax
0.2
V/µs
GBP
Gain bandwidth product f = 100kHz
VCC+ = 30V, Vin = 10mV, RL = 2kΩ, CL = 100pF
Tmin ≤ Tamb ≤ Tmax
0.7 1.1
0.45
MHz
THD
Total harmonic distortion
f = 1kHz, AV = 20dB, RL = 2kΩ, Vo = 2Vpp,
CL = 100pF, VCC = 30V
%
0.02
Equivalent input noise voltage
en f = 1kHz, RS = 100Ω, VCC = 30V
55 nV/√Hz
DVio Input offset voltage drift
7 30 µV/°C
DIio Input offset current drift
Channel separation (4)
VO1/VO2 1kHz ≤ f ≤ 20kHz
10 300 pA/°C
dB
120
1. VO = 1.4V, RS = 0Ω, 5V < VCC+ < 30V, 0V < Vic < VCC+ - 1.5V.
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 there is no change in the loading charge 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 VCC+ –1.5V, but either or both inputs
can go to +32V without damage.
4. Due to the proximity of external components, ensure that stray capacitancedoes not cause coupling
between these external parts. Typically, this can be detected because this type of capacitance increases at
higher frequencies.
5/11
5 Page 
LM2904WH
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