BA3314F [ROHM]
Dual preamplifier with ALC detector circuit; 双前置放大器ALC检测电路
| 型号： | BA3314F |
| 厂家： | 
ROHM |
| 描述： | Dual preamplifier with ALC detector circuit |
| 文件： | 总4页 (文件大小：68K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Audio ICs
Dual preamplifier with ALC detector
circuit
BA3314F
The BA3314F is a dual preamplifier IC with built-in ALC detector circuit, designed for audio applications. It comes in a
compact 14-pin SOP package, and has two record/playback preamplifiers, and an ALC detector circuit. The preamplifier
can be directly coupled to the tape head without coupling capacitors to prevent tape head magnetization and “pop” noise
generation.
With the built-in ALC detector circuit, an ALC circuit with large dynamic range can be constructed with addition of just
an external time constant circuit.
FApplications
Audio equipment
FFeatures
1) Input bias circuit does not require coupling capaci-
tors.
3) Wide operating power supply voltage range.
4) High gain.
2) Built-inALC circuit with external time constant circuit.
5) Low noise.
FBlock diagram
217
Audio ICs
BA3314F
FAbsolute maximum ratings (Ta = 25_C)
FRecommended operating conditions (Ta = 25_C)
FElectrical characteristics (unless otherwise noted, Ta = 25_C, VCC = 8V and f= 1kHz)
218
Audio ICs
BA3314F
FMeasurement circuit
FOperation notes
Changing the input resistor Rg, and the ALC time
constant influences the ALC transient characteristics. In
particular, if Rg is less than 3.9kΩ or the time constant ca-
pacitor is less than 47µF, the ALC may operate exces-
sively. Do not use smaller values than those recom-
mended for these components.
219
Audio ICs
BA3314F
FApplicaioexample
FElectrical characteristics curve
FExternal dimensions (Units: mm)
220
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