The HA17741 is a general-purpose operational amplifier designed by Hitachi Semiconductor. Let’s explore its features and specifications:

1. Features:

   • Dual Op-Amp: The HA17741 contains two operational amplifiers in a single package.
   • Low Noise: It is engineered for minimal noise interference, making it suitable for high-quality audio circuits.
   • Wide Voltage Range: With a 30-V supply voltage capability, it accommodates various audio systems.
   • High Bandwidth: The 10-MHz bandwidth ensures accurate signal reproduction.
   • Stable Output Drive: It provides good output drive capability.

2. Applications:

   • Audio Equipment: The HA17741 is commonly used in audio pre-amplifiers, tone control circuits, and telephone channel amplifiers.
   • Professional Sound Systems: Its low distortion and high power output make it ideal for professional sound equipment.
   • Control Circuits: It can be part of control circuits in audio devices.

3. Specifications:

   • Supply Voltage: Up to 30 V
   • Bandwidth: 10 MHz
   • Noise Performance: Low noise
   • Package: Dual in-line package (DIP)

Whether you’re designing a pre-amplifier, tone control board, or any audio-related circuit, the HA17741 offers reliable performance and versatility¹²³. If you’re interested in a specific product that utilizes the HA17741, you might consider the REES52 NE5532 Stereo Pre-amp Preamplifier Tone Board with 4 channels for treble, alto, bass, and volume adjustment. It operates on a 12-24V AC dual power supply and features stable audio output. The input section uses dual RCA plugs for good audio contacts and longevity⁴.

Remember, the HA17741 is like the unsung hero behind the scenes, ensuring your audio sounds just right!