Nippon Wireless has developed an audio selector NJM2752/53/55 for multi-input AV equipment such as TV, car audio equipment and DVD players, and has begun to distribute samples.
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In the past, 2 to 3 input selectors equipped with AV equipment were used to meet the market's required audio characteristics (low distortion and low noise), so they were often replaced with 4-input selectors with excellent characteristics. The board then creates excess space and creates high costs. In order to solve the above problems and to respond to specification changes in a timely manner, the 2 to 4 input selector series with excellent audio characteristics that can reduce the number of designs has become an important market demand. The NJM2752 (dual input) / 53 (3 input) / 55 (4 input) is a series of stereo audio selectors that can be developed to meet market needs.
The NJM2752/53/55 is a series of audio selectors consisting of a switching circuit and a buffer amplifier circuit, and has the same pin arrangement. The NJU2755's 16-pin specification is used when designing the board, so the board of the 2 to 4 input machine can be used universally. In addition, Nippon Wireless has achieved excellent low distortion (THD=0.0009%) and low noise (Vno=-114dBV) through its long-standing analog circuit technology, contributing to high-quality playback.
With the NJM2752/53/55 series, the number of inputs can be increased, so products for various AV machines can be properly selected, and the buffer amplifier circuit required for the rear section of the conventional selector is built in, to save board space and Cost reduction has been contributed.
The NJM2752/53/55, which achieves excellent low-noise and low-distortion audio characteristics and contributes to space saving and cost reduction, is ideal for multi-input AV machines such as TV, car audio equipment and DVD players.
The main features of NJM2752/53/55.
1. Since the pin arrangement is the same, it is easy to change the specification of the input number.
2, excellent audio characteristics (Vno = -114dBV, THD = 0.0009%), contributed to high-quality playback.
3. Built-in buffer amplifier, so do not use an external operational amplifier.
Product development at a glance
product name | performance | application | Package |
NJM2752 | 2 input stereo audio selector | TV , car audio , DVD recorder , various AV machines. | TVSP10/SSOP14 |
NJM2753 | 3 input stereo audio selector | SSOP14 | |
NJM2755 | 4 input stereo audio selector | SSOP16 |
Product performance and features summary â— Operating power supply voltage 4.7 ~ 10V
â—Stereo audio selector
â— Pin arrangement is the same
â— Built-in buffer
â—Low noise -114dBV typ.
â—Low distortion 0.0009% typ.
â—Bipolar process
â—Package NJM2752: TVSP10 (2.9mm × 4.0mm × 1.0mm)
SSOP14 (5.0mm × 6.4mm × 1.26mm)
NJM2753: SSOP14 (5.0mm × 6.4mm × 1.26mm)
NJM2755: SSOP16 (5.0mm × 6.4mm × 1.26mm)
Production plan / sample price New Japan Wireless has released NJM2752/53/55 samples since January 2009, and is expected to produce 500,000 units a month after it is put into production in February. The sample price is 60 yen for NJM2752, 80 yen for NJM2753, and 100 yen for NJM2755.
SHENZHEN CHONDEKUAI TECHNOLOGY CO.LTD , https://www.szsiheyi.com