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參數(shù)資料
| 型號(hào)： | BA1449F |
| 英文描述： | AM/FM Receiver Circuit |
| 中文描述： | 調(diào)幅/調(diào)頻接收機(jī)電路 |
| 文件頁(yè)數(shù)： | 1/9頁(yè) |
| 文件大?。?/td> | 182K |
| 代理商： | BA1449F |
354
Audio ICs
AM radio / FM IF stereo system IC
BA1448S / BA1449F
The BA1448S and BA1449F are electronic tuning system ICs for AM, FM IF, and MPX. They have been developed for
use in radio cassette players and mini-component stereo systems.
The FM detector and MPX VCO circuits do not require adjustment, which will reduce the number of assembly line pro-
cesses. In particular, the VCO is laser locked, and requires no adjustment or external components. The characteristics
of the two chips are the same, but the packages are different (24-pin SDIP for the BA1448S and 24-pin SOP for the
BA1449F).
Applications
Synthesized tuners in radio cassette players and mini-
component stereo systems.
Features
1) Built-in mono AM radio, FM IF amplifier/detector,
and FM stereo demodulator.
2) DTS compatible (both SD and IF count).
3) Built-in reference voltage supply for good short-wave
band frequency stability.
4) Good FM stability.
5) FM detector does not require adjustment (ceramic
discriminator).
6) FM MPX VCO is laser locked and requires no ad-
justment or external components.
7) Built-in forced monaural function for the MPX (VCO
stops, LED off).
8) Audio can be low-cut to improve AM fidelity.
9) VCO for the MPX switches off during AM operation.
10) Mute possible for IF request.
Absolute maximum ratings (Ta = 25 C)
Recommended operating conditions (Ta = 25 C)
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