MC34072DR2G

Product Overview

• Category: Integrated Circuit (IC)
• Use: Operational Amplifier
• Characteristics:
  • High voltage gain
  • Low input offset voltage
  • Wide bandwidth
  • Low noise
• Package: SOIC-8
• Essence: The MC34072DR2G is a dual operational amplifier designed for general-purpose applications.
• Packaging/Quantity: Available in tape and reel packaging, with 2500 units per reel.

Specifications

• Supply Voltage: ±3V to ±18V
• Input Offset Voltage: 2mV (maximum)
• Input Bias Current: 500nA (maximum)
• Input Voltage Range: ±Vs - 1.5V
• Output Voltage Swing: ±Vs - 1.5V
• Gain Bandwidth Product: 1MHz (typical)
• Slew Rate: 0.5V/μs (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MC34072DR2G has a standard pin configuration for an SOIC-8 package:

___________ Vcc | 1 8 | Vout Vin-| 2 7 | Vin+ Gnd | 3 6 | NC NC | 4 5 | NC -----------

Functional Features

• High open-loop gain
• Low input offset voltage and bias current
• Wide bandwidth for accurate signal reproduction
• Low noise performance
• Stable operation under capacitive loads
• Short-circuit protection

Advantages and Disadvantages

Advantages: - High voltage gain allows for amplification of weak signals - Low input offset voltage ensures accurate signal processing - Wide bandwidth enables faithful reproduction of high-frequency signals - Low noise performance for clean signal amplification - Stable operation even with capacitive loads - Short-circuit protection prevents damage to the amplifier

Disadvantages: - Limited output voltage swing compared to rail-to-rail amplifiers - Relatively low gain bandwidth product compared to specialized amplifiers

Working Principles

The MC34072DR2G is based on a bipolar junction transistor (BJT) input stage followed by a MOSFET output stage. The BJT input stage provides high input impedance and low input offset voltage, while the MOSFET output stage offers low output impedance and high output current capability. This combination allows the operational amplifier to provide high voltage gain, wide bandwidth, and low distortion.

Detailed Application Field Plans

The MC34072DR2G can be used in various applications, including:

1. Audio Amplification: The low noise and wide bandwidth make it suitable for audio amplifiers, providing clear and accurate sound reproduction.
2. Signal Conditioning: With its high gain and low offset voltage, it can be used for precise signal conditioning in measurement and control systems.
3. Active Filters: The operational amplifier's characteristics make it ideal for implementing active filters, such as low-pass, high-pass, and bandpass filters.
4. Instrumentation Amplifiers: Its high input impedance and low noise make it suitable for instrumentation amplifiers used in sensor signal conditioning.

Detailed and Complete Alternative Models

Some alternative models to the MC34072DR2G include:

1. LM358: Dual operational amplifier with similar characteristics, available in various package options.
2. TL072: Dual JFET-input operational amplifier with low noise and high slew rate.
3. AD822: Precision instrumentation amplifier with low input offset voltage and high common-mode rejection ratio.

These alternatives offer similar functionality and can be used as replacements depending on specific requirements.

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