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HA1151 Specifications

Detailed technical information and Application Scenarios

Product Details

PartNumberManufactorQuantityAvailability
HA1151HIT123Yes

HA1151** is a monolithic integrated circuit (IC) manufactured by **HIT (Hitachi)**.

The HA1151 is a monolithic integrated circuit (IC) manufactured by HIT (Hitachi). It is primarily designed for use in FM stereo demodulation applications. Below are its key specifications, descriptions, and features:

Specifications:

  • Manufacturer: Hitachi (HIT)
  • Function: FM Stereo Demodulator IC
  • Package Type: SIP (Single In-line Package) or DIP (Dual In-line Package)
  • Operating Voltage: Typically 9V to 14V
  • Operating Temperature Range: -20°C to +75°C
  • Input Frequency Range: Suitable for FM stereo broadcast signals (19kHz pilot tone, 38kHz subcarrier)
  • Output: Stereo audio (L+R, L-R)

Descriptions:

The HA1151 is an FM stereo demodulator IC that decodes composite stereo signals into left (L) and right (R) audio channels. It includes:

  • Pilot tone detection (19kHz)
  • Subcarrier regeneration (38kHz)
  • Stereo demodulation (matrix decoding)
  • Low distortion for high-fidelity audio output

Features:

  • Built-in PLL (Phase-Locked Loop) for stable stereo demodulation
  • Low crosstalk between channels
  • High signal-to-noise ratio (SNR)
  • Simple external circuit requirement (minimal components needed)
  • Mono/stereo automatic switching

This IC was widely used in FM stereo receivers and tuners in the 1970s and 1980s. For exact performance characteristics, refer to the original Hitachi datasheet.

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