説明

These circuits consist of two independent, highgain, internally frequency-compensated op amps, specifically designed 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 can now be more easily implemented in single power supply systems. For example, these circuits can be directly supplied with the standard 5 V, which is used in logic systems and will easily provide the required interface electronics with no additional power supply.
In 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.

 

特徴

Frequency compensation implemented internally
Large DC voltage gain: 100 dB
Wide bandwidth (unity gain): 1.1 MHz (temperature compensated)
Very low supply current per channel essentially independent of supply voltage
Low input bias current: 20 nA (temperature compensated)
Low input offset voltage: 2 mV
Low input offset current: 2 nA
Input common-mode voltage range includes negative rails
Differential input voltage range equal to the power supply voltage
Large output voltage swing 0 V to (VCC+ – 1.5 V)

 

Related products

See LM158W for enhanced ESD ratings
See LM2904 and LM2904W for automotive grade versions

 

Absolute maximum ratings

(1)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.
(2)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.
(3)Short-circuits can cause excessive heating and destructive dissipation. Rth are typical values.
(4)Human body model: a 100pF capacitor is charged to the specified voltage, then discharged through a 1.5kΩ resistor between two pins of the device. This is done for all couples of connected pin combinations while the other pins are floating.
(5)Machine model: a 200pF capacitor is charged to the specified voltage, then discharged directly between two pins of the device with no external series resistor (internal resistor< 5Ω). This is done for all couples of connected pin combinations while the other pins are floating.
(6)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.

 

Operating conditions

(1)When used in comparator, the functionality is guaranteed as long as at least one input remains within the operating common mode voltage range.
(2)When used in comparator, the functionality is guaranteed as long as at least one input remains within the operating common mode voltage range.

 

Electrical characteristics

(1)Vo = 1.4 V, Rs = 0 Ω, 5 V < VCC+ < 30 V, 0 < Vic < VCC+ – 1.5 V
(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 load on the input lines.
(3)Due to the proximity of external components, ensure that stray capacitance between these external parts does not cause coupling. Typically, this can be detected because this type of capacitance increases at higher frequencies.