BA6797FP [ROHM]
4-channel BTL driver for CD players; 4通道BTL驱动器的CD播放器
| 型号： | BA6797FP |
| 厂家： | 
ROHM |
| 描述： | 4-channel BTL driver for CD players |
| 文件： | 总10页 (文件大小：165K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Optical disc ICs
4-channel BTL driver for CD players
BA6797FP / BA6797FM
The BA6797FP and BA6797FM are 4-channel BTL power drivers for CD players and each have an internal 5V regulator
(requires attached PNP transistor). Because the input stage of each driver channel connects to an operational amplifier,
and there are both positive and negative input pins, making these ICs adaptable for a wide range of inputs and greatly
simplify filter configuration. In addition, the internal level shifting circuit reduces the number of external components.
FApplications
CD players, CD-ROM drives and other optical disc devices
FFeatures
1) 4-channel BTL driver in a HSOP 28-pin power pack-
age, ideal for application miniaturization.
2) Wide dynamic range.
4) Internal level shifting circuit reduces the number of
external components.
5) Dual positive and negative input pins, for adaptability
for a wide range of inputs (including negative phase
input). Also simplifies filter configuration.
3) Internal thermal shutdown circuit.
FAbsolute maximum ratings (Ta = 25_C)
FRecommended operating conditions (Ta = 25_C)
364
Optical disc ICs
BA6797FP / BA6797FM
FBlock diagram
365
Optical disc ICs
BA6797FP / BA6797FM
FPin descriptions
366
Optical disc ICs
BA6797FP / BA6797FM
FInput / output circuits
367
Optical disc ICs
BA6797FP / BA6797FM
FElectrical characteristics (unless otherwise noted, Ta = 25_C, VCC = 8V, f = 1kHz, RL = 8Ω)
368
Optical disc ICs
BA6797FP / BA6797FM
FMeasurement circuit
369
Optical disc ICs
BA6797FP / BA6797FM
FMeasurement circuit switch table
370
Optical disc ICs
BA6797FP / BA6797FM
FApplication example
FOperation notes
(1) The BA6797FP and BA6797FM have an internal
thermal shutdown circuit. Output current is muted when
the chip temperature exceeds 175_C (typically).
(2) If the mute pin (pin 9) voltage is opened or lowered
below 0.5V, the output current will be muted. Pin 15
should be pulled up above 2.0V during normal use. Dur-
ing muting, the output pins remain at the internal bias
voltage, roughly (VCC / 2).
(3) The bias pin (pin 8) is muted when lowered below
1.4V (typically). Make sure it stays above 1.6V during
normal use.
(4) Be sure to connect the IC to a 0.1µF bypass capaci-
tor to the power supply, at the base of the IC.
(5) Connect the radiating fin to an external ground.
(6) The capacitor between regulator output (pin 7) and
GNDalsoservestopreventoscillationoftheIC, soselect
one with good temperature characteristics.
371
Optical disc ICs
BA6797FP / BA6797FM
FElectrical characteristic curves
372
Optical disc ICs
BA6797FP / BA6797FM
FExternal dimensions (Units: mm)
373
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