Description

The A114017 is an IF system IC designed for FM car stereo receivers. It features versatile muting characteristics and allows receiver designers to realize the muting performance according to their design concept. With the A114017, DX-Local switching can be accomplished with ease. It provides high limiting sensitivity, high signal-to-noise ratio, low distortion, and good AM reception. The A114017 also has various functions such as IF amplification/limiter, quadrature detector, AF preamplifier, AFC output, signal meter output, AGC output, and muting control.

Specifications and features

• Versatile muting options for different signal strengths
• Selectable muting attenuation of approximately 6 to 40 dB
• Freely adjustable input signal strength level for muting circuit activation
• High limiting sensitivity of 25 dBµ (typical) for fine quieting characteristic
• High signal-to-noise ratio of 78 dB (typical)
• Low distortion of 0.05% (typical) when used with double-tuned circuits
• Good AM reception with 63 dB (typical) of AM rejection using 6 stages of differential IF amplifiers
• Signal meter drive output proportional to the input signal strength in dB
• Clamped (±VBE) AFC output with adjustable bandwidth
• Delayed AGC output for front end circuit
• Compact design with single-ended package to save space
• 3 mm pitch of pin terminals for easy PCB layout

Application Scenarios

The A114017 is widely used in FM car stereo receivers as an IF system IC. It is suitable for various applications where muting, limiting, AF amplification, AFC output, signal meter output, AGC output, and muting control are required.

Comparison

• Versatile muting options for different signal strengths
• High limiting sensitivity for fine quieting characteristic
• High signal-to-noise ratio
• Low distortion
• Good AM reception
• Compact design
• Easy PCB layout

• None identified