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PDF LM2904AH Data sheet ( Hoja de datos )
| Número de pieza | LM2904AH | |
| Descripción | dual operational amplifier | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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LM2904AH
Low-power, dual operational amplifier
Datasheet - preliminary data
Features
Frequency compensation implemented
internally
Large DC voltage gain: 100 dB
Wide bandwidth (unity gain): 1.1 MHz
(temperature compensated)
Very low supply current/amplifier, essentially
independent of supply voltage
Low input bias current: 20 nA (temperature
compensated)
Low input offset current: 2 nA
Input common-mode voltage range includes
negative rail
Differential input voltage range equal to the
power supply voltage
Large output voltage swing
0 V to ((VCC+) -1.5 V)
Related products
See LM2904WH for enhanced ESD
performances
Description
This circuit consists of two independent, high
gain operational amplifiers (op amps) that have
frequency compensation implemented internally.
They are designed specifically for automotive and
industrial control systems. The circuit 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 can now be more easily
implemented in single power supply systems. For
example, these circuits can be directly supplied
from the standard 5 V which is used in logic
systems and easily provides 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 a single power supply.
November 2015
DocID028399 Rev 2
This is preliminary information on a new product now in development
or undergoing evaluation. Details are subject to change without notice.
1/19
www.st.com
1 page  
LM2904AH
Absolute maximum ratings and operating
conditions
3 Absolute maximum ratings and operating conditions
Symbol
VCC
Vid
Vin
Iin
Tstg
Tj
Rthja
Rthjc
ESD
Table 1: Absolute maximum ratings
Parameter
Value
Supply voltage (1)
Differential input voltage (2)
±16 or 32
±32
Input voltage
Output short-circuit duration (3)
-0.3 to 32
Infinite
Input current: Vin driven negative (4)
5 mA in DC or 50 mA in AC
(duty cycle = 10 %, T = 1 s)
Input current: Vin driven positive above AMR
value (5)
0.4
Storage temperature range
-65 to 150
Maximum junction temperature
Thermal resistance junction to ambient (6)
Thermal resistance junction to case (6)
HBM: human body model (7)
MM: machine model (8)
CDM: charged device model (9)
160
120
37
300
200
1.5
Unit
V
s
mA
°C
°C/W
V
kV
Notes:
(1)All voltage values, except differential voltage are with respect to network ground terminal.
(2)Differential voltages are the non-inverting input terminal with respect to the inverting input terminal.
(3)Short-circuits from the output to VCC can cause excessive heating if (Vcc+) > 15 V. The maximum output current
is approximately 40 mA, independent of the magnitude of VCC. Destructive dissipation can result from
simultaneous short-circuits on all amplifiers.
(4)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 diode
clamp. In addition to this diode action, there is 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 during which an input is driven negative. This is not destructive and normal output is restored for input
voltages above -0.3 V.
(5)The junction base/substrate of the input PNP transistor polarized in reverse must be protected by a resistor in
series with the inputs to limit the input current to 400 µA max (R = (Vin-32 V)/400 µA).
(6)Short-circuits can cause excessive heating and destructive dissipation. Values are typical.
(7)Human body model: a 100 pF capacitor is charged to the specified voltage, then discharged through a 1.5 kΩ
resistor between two pins of the device. This is done for all couples of connected pin combinations while the other
pins are floating.
(8)Machine model: a 200 pF capacitor is charged to the specified voltage, then discharged directly between two
pins of the device with no external series resistor (internal resistor < 5 Ω). This is done for all couples of connected
pin combinations while the other pins are floating.
(9)Charged device model: all pins and the package are charged together to the specified voltage and then
discharged directly to the ground through only one pin. This is done for all pins.
DocID028399 Rev 2
5/19
5 Page 
LM2904AH
Figure 15: Gain bandwidth product
Electrical characteristic curves
Figure 16: Power supply rejection ratio
Figure 17: Common-mode rejection ratio
Figure 18: Phase margin vs capacitive load
DocID028399 Rev 2
11/19
11 Page | ||
| Páginas | Total 19 Páginas | |
| PDF Descargar | [ Datasheet LM2904AH.PDF ] | |
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