The " LM2904 DR2G" is an operational amplifier (op-amp) manufactured by Texas Instruments. The part number " LM2904DR2G " corresponds to a dual op-amp with a Surface Mount Device (SMD) package, specifically in the SOIC-8 package form. This operational amplifier is typically used in a variety of electronic applications that require low Power consumption, high precision, and a compact form factor. Let's break down the requested details step-by-step.
1. Manufacturer:
Texas Instruments2. Package Type:
SOIC-8 (Small Outline Integrated Circuit, 8 pins)3. Pin Function Description for LM2904DR2G:
The LM2904DR2G comes in the SOIC-8 package, which contains 8 pins. Below is the detailed description of each pin's function:
Pin Number Pin Name Pin Function Description Pin 1 Output 1 Output of the first operational amplifier. This pin provides the output signal corresponding to the first op-amp inside the LM2904. Pin 2 Inverting Input 1 Inverting input for the first operational amplifier. This pin receives the input signal that is inverted in polarity at the output, dependent on feedback. Pin 3 Non-Inverting Input 1 Non-inverting input for the first operational amplifier. This is the input signal that will be passed through to the output with no inversion. Pin 4 V- (Negative Power Supply) Negative voltage supply for the op-amp. This pin is connected to the lower power rail (typically ground or a negative supply voltage). Pin 5 Non-Inverting Input 2 Non-inverting input for the second operational amplifier. This is the input signal for the second op-amp that will be passed through to the output with no inversion. Pin 6 Inverting Input 2 Inverting input for the second operational amplifier. This pin receives the input signal that is inverted in polarity at the output, dependent on feedback. Pin 7 Output 2 Output of the second operational amplifier. This pin provides the output signal corresponding to the second op-amp inside the LM2904. Pin 8 V+ (Positive Power Supply) Positive voltage supply for the op-amp. This pin is connected to the positive power rail.4. Detailed Function and Usage of Each Pin:
Each of the pins above is integral to the operation of the op-amp circuit. Here's how the LM2904DR2G is typically used:
Pins 1, 2, and 3: The first operational amplifier in the LM2904 is used in various configurations such as inverting, non-inverting, or differential amplifiers. The non-inverting input (Pin 3) is used to apply the input signal, while the inverting input (Pin 2) is typically connected to a resistor network for feedback. The output (Pin 1) provides the amplified signal.
Pins 5, 6, and 7: The second operational amplifier works similarly to the first one. The non-inverting input (Pin 5) is used for applying the input signal, and the inverting input (Pin 6) is part of the feedback network. The output (Pin 7) provides the amplified signal corresponding to the second op-amp.
Pins 4 and 8: These pins are for the power supply connections, with Pin 4 connecting to the negative voltage rail (or ground), and Pin 8 to the positive voltage rail. The op-amp requires a dual power supply for optimal operation.
5. FAQ Section for LM2904DR2G:
Here are the 20 most common questions (FAQ) about the LM2904DR2G:
What is the typical application of the LM2904DR2G? The LM2904DR2G is typically used in signal conditioning, filters , amplifiers, and other analog signal processing applications.
What is the maximum operating voltage for the LM2904DR2G? The maximum operating voltage for the LM2904DR2G is ±32V or 64V (total).
What is the typical power consumption of the LM2904DR2G? The typical supply current for the LM2904 is 1mA per amplifier, making it a low-power device.
Can the LM2904DR2G operate with a single power supply? Yes, the LM2904DR2G can operate with a single power supply (e.g., 5V) in many applications, though it’s optimized for dual supply configurations.
What is the gain-bandwidth product for the LM2904DR2G? The typical gain-bandwidth product for the LM2904DR2G is 1 MHz.
What is the output impedance of the LM2904DR2G? The output impedance is typically 75Ω at low frequencies.
Can the LM2904DR2G drive capacitive loads directly? No, the LM2904DR2G may not drive large capacitive loads directly without additional compensation.
What are the input voltage range limits for the LM2904DR2G? The input voltage should be within the supply range of the op-amp, typically ±V_supply, or ground for single supply operation.
What is the common-mode rejection ratio (CMRR) of the LM2904DR2G? The CMRR is typically 70 dB at 1 kHz.
What is the slew rate of the LM2904DR2G? The typical slew rate of the LM2904DR2G is 0.3V/µs.
What is the input offset voltage of the LM2904DR2G? The typical input offset voltage is 5 mV, which may require external trimming.
What is the output voltage swing of the LM2904DR2G? The output voltage swing typically ranges from V- + 1.5V to V+ - 1.5V for a 10 kΩ load.
What is the difference between the LM2904 and LM2902? The LM2904 is a dual op-amp, while the LM2902 is a quad op-amp with similar specifications.
How should I select external components for the LM2904DR2G circuit? Resistors and capacitor s should be chosen based on the desired feedback and filtering characteristics of the circuit.
Can I use the LM2904DR2G in precision measurement applications? The LM2904 is suitable for many precision applications, though it’s not the highest precision op-amp available.
What is the thermal shutdown feature of the LM2904DR2G? The LM2904 does not have built-in thermal shutdown but operates within specified temperature limits.
Can the LM2904DR2G be used in high-speed circuits? The LM2904 is not suitable for very high-speed circuits due to its 1 MHz bandwidth.
What is the package type for the LM2904DR2G? The LM2904DR2G is packaged in an SOIC-8 surface-mount package.
How can I ensure stability in my LM2904DR2G circuit? Stability can be ensured by proper feedback design and avoiding large capacitive loads.
What are the voltage limits for the LM2904DR2G inputs and outputs? The inputs and outputs must stay within the supply rails, and the input voltage should not exceed the supply voltage by more than 0.3V.
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